# Introduction

The QuickBridge II is a point-to-point, outdoor, wireless system offering a high-capacity alternative to wired data networks. Using IP packet radio transmitters, standard Ethernet interfaces, and an easy-to-deploy design, the QuickBridge II system enables a broad bandwidth link between two locations.

The product’s principle components are a radio and a power and Ethernet adapter. The radio has a self-contained antenna enclosed in a weatherproof, 10” by 10” container, which can be mounted to the side of a building, on a pole, or on a tower structure.

Power and Ethernet connections are supplied through a UV-protected, CAT5 cable attached to a power and Ethernet adapter. The power and Ethernet adapter should be located either in a weatherproof enclosure located near the radio or inside a building. The radio then can be connected to a switch or hub on your network, or directly to a PC.

## Product Highlights

- Fast and Easy to Deploy and Manage
- Unit simplicity enables easy installation to minimize deployment costs
- Audible beeper for antenna alignment eases installation
- Radio (with integrated antenna) connects to indoor power and networks using a single CAT5 cable
- Rapid Return on Investment (ROI)
- Rapid, easy deployment enables quick service activation, reduced costs, and faster payback
- High capacity connection enables faster network traffic to deliver new service offerings
- Pure Ethernet Connectivity
- Operates in Ethernet bridging mode with direct connections to PCs, Fast Ethernet switches, and routers.

## Key Features

- Flexible, aggregate throughput rates: 18, 34, and 54 Mbps
- 5.8 GHz license-exempt frequency band
- Compliant with industry standards
- Radio incorporates a 10-degree azimuth by 10-degree vertical antenna
- Management through supplied configuration software
- Line-of-site
- Point-to-point communications up to 7 miles/12 kilometers
- GPS synchronization to enable collocation
- Reduced weight

## System Requirements

The minimum system requirements for installing and running the QuickBridge Manager are as follows:

- Windows 98, 2000, NT, or XP operating system
- 50MB of free disk space
- 64MB RAM
- 400 MHz processor
- 10/100 Base-T network interface card
- 16-bit color or higher is required to install the QuickBridge Manager software

## Intended Audience

This book is designed for network engineers and field service personnel who will install, maintain, and troubleshoot the QuickBridge. It assumes that you have an understanding of networks in general, and a basic understanding of the following subjects:

- Microwave fundamentals
- Microwave test equipment
- Ethernet
- IP networking

## Planning for Installation

There are several planning factors to be considered prior to installing the radio system. In addition to selecting the installation site, you must:

Calculate:

- Required RSL and fade margin to achieve availability objectives
- Required path availability
- Anticipated Multi-Path Reflection Points

Determine:

- System Frequency Plan
- Required Antenna Mounting Height to obtain proper Path Clearance
- Required Transmission Line Types and Lengths

Plan for:

- The unit’s continuous power consumption needs
- Antenna installation
- Lightning protection and system grounding
- Radio hardware mounting
- Cable installation including egress
- Pre-testing Radio Equipment (back-to-back test procedure)

For detailed information regarding these planning items, see Site Planning.

# Installing the QuickBridge II System

Perform the following steps in this section to install the QuickBridge II system:

1. Gather Required Tools
2. Unpack the Shipping Box Contents
3. Pre-assemble Hardware
4. Connect the Cables
5. Test Back-to-Back
6. Install the Software
7. Setup for Configuration
8. Mount the Radio Outdoors
9. Align the Antenna

## Step 1. Gather Required Tools and Materials

You should have the following tools available before installing the Tsunami QuickBridge II radios:

- Phillips (cross-tip) screwdrivers
- Small blade standard screwdriver
- Large blade standard screwdriver
- Wire crimpers (if using connectors that are not pre-made)
- Adjustable 6” wrench
- Weatherproofing material for sealing external connectors (such as butyl tape)
- Straight-through CAT5 Ethernet cable for connecting to PC, or cross-over cable if connecting to a hub or a switch.

Note: Maximum cable lengths to be used with the Tsunami QuickBridge II are as follows:

GPS: 7 meters (approx. 23 feet)
T1/E1: 655 feet (approx. 200m)
Power/Ethernet: 246 feet (approx. 75m)

## Step 2. Unpack the Shipping Box Contents

The product’s shipping boxes should be left intact and sheltered until arrival at the installation site. Carefully unpack the Tsunami QuickBridge II shipment and check for any shipping damage or missing parts. There are two sets of equipment in the box, as displayed in the following figure.

The Tsunami QuickBridge II Quick Install Guide and a Documentation and Software CD also are included in the shipment. (Extra screw-on caps to seal unused connector ports are also provided.)

Contact Technical Support regarding any missing or damaged parts.

Notes:

1. If the shipping container shows signs of damage, immediately notify the transportation company. Upon receipt, inspect contents to ensure no parts are missing or damaged.

2. Save the original shipping boxes to re-use for shipping the equipment back to the factory, for storage, or for re-shipping the equipment to another location.

## Step 3. Pre-Assemble Hardware

Proxim recommends that you pre-assemble the radio mounting hardware on the ground to familiarize yourself with the equipment and check for any possible damaged or missing components before mounting the radios. This includes attaching the mounting bracket and loosely attaching the washers, lock washers, and lock nuts to the radios. Installers having prior installation experience may choose to skip this step and proceed with Step 3.

- For outdoor installation, the Tsunami QuickBridge II package includes a CAT5e cable. This is a higher grade than a standard cable.
- For indoor installation, use either a standard CAT5e or a CAT5 cable when connecting to the PC.

### Pre-Assemble Mounting Hardware

Perform these steps on each radio to pre-assemble the mounting hardware on the radios:

1. Place mounting bracket onto mounting hole on rear of radio unit; insert mounting screw.

2. Screw locking bolt onto mounting screw.

3. Raise mounting bracket to proper angle and tighten carriage bolt. Use a nut driver or socket wrench to firmly tighten the carriage bolt.

4. Place the other mounting bracket section on the two bracket mounting screws and loosely secure them with the bolts supplied. These bolts are used later to mount the radio unit to a pole (as shown in the second figure below).

## Step 4. Connect the Cables

When you initially install the radios, you should configure the radios in the same room. A brief overview of the recommended computer/network configuration follows.

- Connect one radio to a switch or hub; connect a PC to the same switch or hub.
- Connect the other radio to another switch or hub and connect another PC to the same switch or hub.
- Make sure the two switches or hubs are not connected on the same network.
- Make the other necessary cable connections, as described in the following text.

An interface cable with an 8-pin DIN connector and a weather-tight RJ45 cable are supplied in the product package. You also can construct your own interface cable.

Note: All cable and waveguides used should be UL-approved for the appropriate environment.

Maximum cable lengths to be used with the Tsunami QuickBridge II are as follows:

GPS: 7 meters (approx. 23 feet)
T1/E1: 655 feet (approx. 200m)
Power/Ethernet: 246 feet (approx. 75m)

The following steps detail how to connect the cables between the radio, power and Ethernet adapter, and your network.

For each radio/power and Ethernet adapter set, perform these steps:

1. Position the radios approximately 25 feet from each other. Place them on a tabletop or shipping box.

2. Connect the 8-pin DIN connector on the supplied interface cable to the 8-pin DIN port on the power and Ethernet adapter.

3. Connect the RJ45 connector on the interface cable to the RJ45 port on the back of the radio. Hand-tighten the connector nut; do not use the wrench to tighten the connector. Connect the other end of the interface cable to the power and Ethernet adapter.

4. Connect an RJ45 connector from a standard CAT5 cable (not supplied) to the RJ45 port on the power and Ethernet adapter. Connect the other end of the cable to a switch/hub on your network or directly to a PC.

5. To directly connect the radio to a PC, use a straight-through Ethernet cable between the network interface card in the PC and the RJ45 port on the power and Ethernet adapter.

   WARNING! The total length of cabling between the PC and the QuickBridge cannot exceed 100 meters, which includes both the cable from the PC to the power adapter and the cable from the power adapter to the QuickBridge. Due to DC power requirements, the maximum cable length between the power adapter and the QuickBridge is 75 meters.

   - If connecting the power and Ethernet adapter to a switch or a hub, use a cross-over Ethernet cable.

   - If your installed radio is connected to a switch or a hub, connect your PC to the same switch or hub. Each PC is used to configure and control its associated radio.

6. Connect the power and Ethernet adapter to a grounded AC power source. A chirping sound should be heard from the radio indicating power to the radio.

   Notes:

   - There is no ON/OFF switch on the radio. To remove power to the radio, unplug the AC cord from the AC outlet or disconnect the 8-pin DIN connector from the power and Ethernet adapter.

   - The radio software program can run on two PCs connected to both ends of the link and not interfere with one another.

## Step 5. Test Radios Back-to-Back

Before mounting the radios, Proxim recommends a back-to-back test of the radio pair. Back-to-back testing is a simple way to verify that the radios are fully operational before they are installed.

The process of installation adds several variables that can add to system turn-up delays during troubleshooting (such as antenna alignment, cabling, and path dynamics). Back-to-back testing can eliminate link problems caused by auxiliary equipment, installation, or the radio path, and isolates potential radio hardware problems.

Note: Back-to-back testing must be performed to verify a radio problem before returning any radio to Proxim for repair.

## Step 6. Install the Software

The QuickBridge II includes configuration software (the QuickBridge Manager), which provides basic setup and operating capabilities. Before installing the software, be sure you have configured the radios as described in Step 4. Connect the Cables.

Note: Install a copy of the QuickBridge Manager on any PC from which you want to control a radio.

To install the QuickBridge Manager:

1. Insert the supplied CD into the PC’s CD-ROM drive. Locate the CD-ROM’s Windows folder and the install program, install.exe. Double-click install.exe to start the installation program. Your browser may display the Security Warning screen; if so, click Yes to continue.

2. The Introduction window is displayed; click Next to continue.

3. The License Agreement screen is displayed. After reading and agreeing to the terms, select “I accept the terms of the license agreement”, then click Next to continue.

4. The Choose Install Folder screen is displayed. The recommended installation directory is C:\Program Files\QuickBridge Manager 2.2. Click Next when you have made your selection or to accept the default folder.

5. The Choose Shortcut Folder screen is displayed; click Next when you have made your selections or to accept the default folder.

6. The Pre-Installation Summary screen is displayed; click the Install button to install the configuration software.

7. When installation is complete, the following window is displayed; click the Done button to exit the installation program.

## Step 7. Set Up for Configuration

Before configuring the QuickBridge II with the Manager program, you must:

- Have completed Step 6. Install the Software.
- Change the PC’s IP address to fall within the radio’s subnet
- Connect the PC
- Apply power to both units

These tasks are covered in the following procedure:

1. Change the PC’s IP address to 192.168.20.75 (or a similar address in the same subnet). Use a subnet mask of 255.255.255.0. This change is only temporary. Later, you will be able to change the IP address of the QuickBridge II unit and return your PC to its original IP address.

   Notes:

   - The IP address of the PC must be in the3 same subnet as the QuickBridge unit in order to use the QuickBridge Manager for configuration.
   - The Master (or Primary) unit is configured at the factory with a default IP address of 192.168.20.56. The Slave (or Secondary) unit is configured with a default IP address of 192.168.20.51.

2. Connect the PC to the Master unit; start the Manager program by clicking on the QuickBridge Manager icon. You can connect to the Slave unit as well; however, this guide steps you through the initialization process by locally connecting to the Master.

   Note: The QuickBridge Manager program can run on two PCs connected to both ends of the link without interfering with one another.

3. Apply power to both units by connecting the AC cord of the power and Ethernet adapters to an AC outlet. After power is applied and a power-up sequence has been successfully completed, the radios each “chirp” once.

4. The radios are now ready for any optional configuration steps, and can establish a wireless link.

## Step 8. Mount the Radio Outdoors

### Selecting a Location

When selecting a location in which to install the radios, keep the following points in mind:

- Determine the direction to the radio
- Avoid obstructions and foliage that could block the signal
- Place the power and Ethernet adapter in a weatherproof enclosure near the radio or inside the building.

  If necessary, disconnect the cables you used to configure the radios inside, move the radios to their outdoor locations, and then connect them to the network segments you want to bridge.

After you connect each radio to its network segment, make sure you install the configuration software on the two PCs used to control the radios (one PC per radio). Use the configuration software to assign each radio a valid and unique IP address for the network segment to which it is attached.

Be sure to properly weatherproof outdoor connections. See Weatherproofing Connections.

CAUTION: When not using GPS, or when GPS is disabled, do not co-locate two hops on the same side of the building or on the same pole.

### Mounting the Radio to a Pole

The radio is designed to mount directly to a pole. Using optional mounting brackets, you can mount the radio to a wall or other flat surface (see Mounting the Radio to a Flat Surface).

1. Remove the nuts you loosely attached in Pre-Assemble Mounting Hardware.

2. Slide the top part of the mounting bracket off of the mounting screws.

3. Place the radio with mounting bracket at the desired height on the pole and slide the top part of the bracket onto the mounting screws. Screw on the nuts and firmly tighten.

### Mounting the Radio to a Flat Surface

To mount the radio to a flat surface:

1. Attach the supplied mounting bracket to the radio using the supplied bolts.

2. Mount the radio and mounting bracket to a flat surface using your own hardware.

   Note: To ensure proper grounding, use the hole on the back of each radio and the provided grounding screws to attach a ground wire to each radio. Use proper wire grounding techniques in accordance with your local electrical codes. You also can mount the radios on tall, multi-section poles with guide wires. For these types of installations, you should consult professionals with experience.

## Step 9. Align the Radios

A cellular telephone or two-way radio may be useful for coordinating alignment activities between both ends of the link. Perform a general alignment of the antennas on both ends of the path using binoculars, compass, GPS, or other related tools. You must align the antennas as accurately as possible before passing traffic over the link. This will help in getting the system running more rapidly.

It is critical that you perform antenna alignment on one end of the link at a time, with the other end remaining stationary. In some cases, you may need to perform coarse alignment using a wide arc in both azimuth and elevation while listening to the audio alignment tone to find the main beam of the opposite end antenna.

For information about using the Receive Signal Quality feature to fine-tune alignment, see Aligning Antennas with QuickBridge Manager.

Note: When you finish aligning the radios, tighten down the U-bolt nuts and side bolt nuts to secure each radio in its aligned position.

# Co-Locating Multiple Radios

Tsunami QuickBridge II radios operate using Time Division Duplexing (TDD), letting radios operate in a single RF channel shared between transmit and receive. If several QuickBridge II radio links must operate in close proximity (as would be the case if radios are co-located on a rooftop or on adjacent buildings), their transmitters must be time-synchronized to prevent interfering with receive signals of adjacent radios.

GPS synchronization minimizes interference between co-located QuickBridge II radios and allows radios to be synchronized even if they are not physically connected.

In general, QuickBridge II radios are considered co-located if you can see another radio from a potential installation location (within line-of-sight) or if there is another radio installed within 300 feet. (Exact rules are difficult to make due to local environmental variables.)

Synchronization is accomplished using a satellite-derived 1 Hz timing signal from an external GPS receiver connected to each of the co-located QuickBridge II radios.

Because far-end QuickBridge II radios are slaved to the co-located Master radios, the far-end radios do not require GPS receivers.

Notes: The maximum cable length for attaching the GPS antenna is 7 meters (approx. 23 feet).

## Types of Installation

Hub and Spoke
  Central hub location with several co-located radios communicating with remote radios located in a radial pattern around the hub.

Parallel Paths
  Two radio links running in parallel with co-located radios at both ends.

Repeater
  Two or more radio links connected serially to extend range or get around path blockage, such as a building or mountain.

### Hub and Spoke

- All radios at hub locations should be Masters and use GPS synchronization.
- A 3-channel plan configuration should be used whenever possible.
- For links in the same direction that have a large near-to-far distance ratio, use channels furthest apart.
- Up to four radios can be co-located using the 4-channel plan, if carefully planned. Make sure adjacent channels are used only for paths greater than 45 degrees apart. (Not recommended for configurations in which near-to-far ratios are more than three.)

### Parallel Path

- Radios at one end both must use GPS and be configured as Masters. Far-end radios are configured as Slaves.
- Use channels 2 or more apart if the 4-channel plan is used.
- Use channels 1 or more apart if the 3-channel plan is used.
- Follow recommendations for Hub and Spoke if closer than 90 degrees from an angular point of view.

### Repeater

- Central radios should be masters and equipped with GPS. Remote radios must be slaves.
- Follow recommendations for hub and spoke configurations.

See Enabling GPS Control.

## Planning Considerations

Channel Plan Selection
  The QuickBridge II radio is configurable for 2 channel plans containing either 3 or 4 channels. The plan containing 3 channels is the easiest to use due to large adjacent channel rejection. The plan containing 4 channels allows for an additional channel, but you must be more careful with interference from adjacent channels.

Antenna Pattern
  The high-gain antenna used on the QuickBridge II provides angular rejection, thereby reducing interference effects from signals that arrive off center. This can, in certain cases, allow for reusing a channel at the same site. However, this is not recommended because factors such as reflections and near-to-far issues can increase co-channel interference.

Near-to-Far Issues
  Receive signals from remote radios will be different if not located at the same distance from the central site. A large signal from close-in radios can interfere with lower level signals from radios further away. Always select channels spaced 2 apart on radios that have distance ratios of more than 4 and point in the same direction. If the path directions are more than 45 degrees apart, adjacent channels can be used as long as the distance ratio is less than 10.

## Troubleshooting Co-Located Radios

Signals from co-located high-power broadcast or cellular transmissions can interfere with the GPS receiver in certain cases. In most cases, however, careful placement of the GPS receiver can eliminate problems.

Blocked satellite signals for GPS receivers can be avoided by mounting the GPS receiver in a location that provides a less obstructed view of the sky.

Note: Tsunami QuickBridge II includes processing that allows for occasional GPS interference, such as interference that can be caused by aircraft radar.

## Co-Locating QuickBridge II Radios

All QuickBridge II radios are equipped with an external jack to which an external GPS receiver can be connected. You can co-locate multiple radios using an optional GPS antenna.

If you are installing radios in a location in which one radio could interfere with another, you can use an optional GPS antenna on each radio to avoid interference between the units. You can install the optional antenna on each radio and enable the GPS receiver to synchronize the TDD timing (transmission and reception) to the GPS signal.

See Enabling GPS Control.

### GPS Antenna Parts

### GPS Antenna Installation

To install a GPS antenna to your QuickBridge units:

1. Assemble metal plate to GPS Receiver base using three W4 screws provided.

2. Assemble GPS receiver sub-assembly, from step 1, to mounting bracket using four #10-32 screws provided.

3. Remove existing dust cap.

4. Connect GPS Receiver RJ-45 connector to sync port of QuickBridge, as shown. O-ring should be included as part of the assembly.

5. Using the band clamp provided, assemble GPS Receiver to pole as shown. The GPS Receiver includes approximately 5 meters of cables allowing for flexibility in positioning receiver.

# Discovering and Configuring the QuickBridge II Radios

This section tells you how to:

- Establish a connection
- Review and change default settings
- Familiarize yourself with the operation of the equipment

Tools Required:

None.

Equipment Required:

PC with 10/100 Ethernet adapter, CAT5 cable w/RJ45 connectors (straight-through)

Required configuration steps include:

- Establishing a connection (Connection Tab)
- Logging in to the QuickBridge II unit (Connection Tab)
- Reviewing the QuickBridge II unit’s configuration (Link Status Tab)

To perform this task: | Use this tab:
Establish a connection | Connection
Log in | Connection
Review Status | Link Status
Reassign the Radio’s IP Address | Settings à Admin
Assign a Security Key ID | Settings à Admin
Select a Node Type | Settings à Radio
Change Throughput Setting | Settings à Radio
Specify a Default Gateway | Settings à Admin
Select Ethernet Protocol Support | Settings à Radio
Set the SNMP Community String | Settings à Admin
Reassign the Radio’s Frequency Plan | Settings à Radio
Align Antennas Using the Settings Tab | Settings à Radio à Installation
Upgrade your System’s Firmware | Upgrade
Roll back to a previous version | Upgrade
View Hardware and Firmware Version Numbers | About
Restart, Refresh, or Save Configuration Changes | Settings à Configuration

## Establishing a Connection

From the Connection window, click on the Discover Radio(s) button. The QuickBridge Manager program should discover all local radios and display the IP address of each discovered unit in the Radio(s) Available field.

Note: If you want to connect to a different radio, you can enter the IP address and click the Login button for the Manager to connect to the specified radio.

The IP address of the PC must be in the same subnet as the QuickBridge unit in order to use the QuickBridge Manager for configuration.

Note: All units have a default IP address assigned at the factory. The Master is set to 192.168.20.56; the Slave is set to 192.168.20.51.

Once you have selected the radio in which you are interested, click the Login button. For first-time configuration, you should login to the Master radio. You may have to clear the ARP table in the PC if there was a previous entry for 192.168.20.56.

Note: If you want to connect to a different radio, you can enter the IP address and click the Login button for the Manager to connect to the specified radio.

## Logging In

The radios are shipped from the factory without preset passwords; click the OK button to log in at the Admin level.

Note: For first-time configuration, you should log in to the Master radio. You may have to clear the ARP table in the PC if there was a previous entry for 192.168.20.56.

Note: See Security for information about setting and changing passwords.

## Elements Common to All QuickBridge Manager Windows

### Tabs

Tabs available through the Tsunami QuickBridge Manager appear following the window header on all QuickBridge Manager windows. The following figure shows the tabs before you log on to a particular radio. At this point, you can view only the list of discovered radios and information about Tsunami QuickBridge Manager.

Once you have logged in, the Connection tab indicates the IP address of the selected radio being managed by QuickBridge Manager and the tabs you can access to configure the selected radio.

The selected tab is highlighted; for example, when you click on the Link Status tab, the tabs appear as follows:

### Link Status LEDs

LEDs indicating status of the local and wireless links are displayed at the bottom of all QuickBridge Manager windows.

- A green Local Link LED shows a link between the PC used to configure the radio and the local radio has been established

- A green Wireless Link LED shows that an authenticated link between the two radios has been established

- Red LEDs indicate a link has not yet been established for the local or wireless connection.

## Configuring Settings

To change settings, click the Settings tab and the Radio sub-tab. (The exact window layout depends upon which unit is selected (Master or Slave) and the radio model.) If the wireless link is established, you can select either the Local or Remote device to control from the Selected Radio box.

Note: The Selected Radio box is available on all configuration windows. It indicates which radio is currently selected, Local or Remote. You can change the currently selected radio by clicking the radio button to the left of the selection.

Select the settings you want to define for the radio; click Save to save your settings.

### Saving Configuration Changes

The Configuration sub-tab contains three buttons: Restart, Refresh, and Save.

- To save your configuration changes, click Save.
- To refresh the screen to the last saved configuration, click Refresh.
- Restart causes the radio to reboot.

### Local and Remote Configuration Changes

The following table indicates whether the value for each field can be configured on the Local unit, the Remote unit, or both units.

Field | Operation | Reset
Master-Slave (or Primary-Secondary) | BOTH, REMOTE | Yes
Channels | BOTH, REMOTE | Yes
Frequency | BOTH, REMOTE | Yes
Antenna audible | LOCAL | No
Antenna pointing | LOCAL | No
IP address | LOCAL | No
Subnet | LOCAL | No
SNMP Community String | LOCAL | No
Default Gateway | LOCAL | No
Security | BOTH, REMOTE | No
Throughput Setting | BOTH, REMOTE | Yes
Ethernet Protocol Support | BOTH, REMOTE | No
Enable GPS | LOCAL | No

Notes to table:

BOTH
  Indicates that the RF link is UP and secure; in this case, both the Local and Remote radios are updated with the change. If the link is down, or not secure, just the Local radio is updated.

LOCAL
  Indicates that only the local radio is updated, or if remotely configured than only that radio is affected.

RESET
  Indicates that the radio is reset after the update (including remote). Traffic is interrupted for all resets.

REMOTE
  Indicates that, if the remote radio is configured, both radios are updated (assuming the RF link stays up and secure). This is the same as BOTH, except the user interface is operating on the Remote radio.

## Link Status Tab

### Reviewing the Master Unit’s Status

From the Link Status window, review the current status of both ends of the QuickBridge II link; in this case, the locally connected radio (Master) and the remote radio (Slave). This window is updated as changes occur.

Note: When the link has not been established to the remote unit, the remote status is shaded gray and shows incorrect status. After the link is established, the correct status is reported.

### Link Status Tab Field Descriptions

Node Type
  Displays the Node Type setting (Master or Slave) assigned to the unit.

Link State
  When the link status between the radios changes (for example, when you first power up the radios, change the radios’ configuration, and so on) the following status messages are displayed in this field:

  Slave Searching for Signal:
    Slave searches for an inbound signal; Master searches for an outbound signal.

  Master Searching for Signal:
    Master searches for an inbound signal; Slave searches for an outbound signal.

  Inbound fine sync:
    Indicates inbound signal detected and link is being “finalized.”

  Link established:
    Indicates link established between radios.

  ODU not connected:
    Indicates that there is no local link between the PC and the radio. See “Troubleshooting” for possible causes and solutions to the problem.

Throughput Setting
  Shows the current Throughput Setting at which the link is operating.

Frequency Channel
  Shows the Frequency setting specified for the local radio. Set both radios to the same Frequency (for example, if the Master is 3A, the Slave also should be set to 3A).

Receive Signal Level (dBm)
  Shows the level of signal received by the local radio (in dBm). The signal quality should be at least 10 dB above the threshold for the throughput level you are using. See Technical Specifications, for the thresholds associated with each data rate. You can use this field to fine-tune radio alignment. After you mount the radio outdoors, check the Receive Signal Level value as you make fine adjustments to the radio alignment until you obtain optimal signal quality.

Transmitter Level (EIRP, dBm)
  Shows the level of signal transmitted by the local radio (in dBm).

Packet Loss Rate
  Shows the rate of packet loss. This is expressed as “X e- Y”, exponential notation, meaning that approximately X packets out of 10Y received are in error. This is used as a general indicator of the link quality. For example, “3e-5” indicates that approximately three packets in every 100,000 received is in error.

Range km
  Shows the estimated distance (in kilometers) between the two radios. Measuring the delay between two sides of a link, a value of “0” indicates that the radios may be too close together for efficient data communication.

Ethernet Activity / Ethernet Detection
  Indicates whether the Ethernet link has been detected (auto-negotiate has completed) and whether it is active.

GPS Status
  This field has been added to support the installation of GPS antennas. Possible values are Disabled or Enabled. This field is grayed out if GPS is not supported by your QuickBridge II radio.

## Settings Tab, Radio Sub-Tab

### Selecting Node Type

You can switch between configuration of the Master unit and the Slave unit by clicking the radio button next to Master or Slave.

### Changing the Throughput Setting

You can change the throughput setting for the selected radio by clicking the radio button next to one of these selections: 18 Mbps, 34 Mbps, or 54 Mbps. A possible reason for changing this setting is to reduce throughput to increase the range of reception.

### Reassigning the Frequency Plan

The Frequency Selection consists of two components—a Channel and a Frequency. Throughout this document, these two settings are collectively referred to as the Frequency Plan. The Frequency Plan box lets you choose the Frequency Plan to be used for the selected radio. See Available Frequency Plans for available frequencies. Choose the same Frequency Plan for both radios.

You can leave the Frequency Plan unchanged and proceed with the installation, or you can change the Frequency Plan (now or at any later time). Generally, for a single hop of radios, any of the seven frequency channels (3A, 3B, 3C, 4A, 4B, 4C, or 4D) can be selected. Once a link has been established, changing the frequency plan of either Master radio (when locally connected to the Master) causes the frequency plan of the Slave radio on the other end of the link to change as well.

WARNING! Traffic is interrupted for all resets.

Changing Frequency Plans is especially useful when installing multiple QuickBridge II units at the same location.

Click the Settings tab and the Radio sub-tab to reassign the frequency plan. To select a new frequency plan, click on one of the other buttons for the other frequency channel not marked.

#### Available Frequency Plans

The QuickBridge II offers two channel plans, each with non-overlapping frequencies, as defined in the following tables. The 26 dB bandwidth of the RF signal is less than 26 MHz. Each channel is 20.75 MHz wide at the 3 dB point.

3-Channel Plan |  | 4-Channel Plan
Channel ID | Frequency |  | Channel ID | Frequency
3A | 5742.20 MHz |  | 4A | 5743.86 MHz
3B | 5775.40 MHz |  | 4B | 5764.61 MHz
3C | 5808.60 MHz |  | 4C | 5785.36 MHz
|  |  | 4D | 5806.11 MHz

### Selecting Ethernet Protocol Support

In the Ethernet Protocol Support box on the Radio sub-tab, you can select IP Only mode or Enhanced Ethernet mode.

Choose IP Only mode when all the bridged traffic is known to be composed of only IP or ARP packets, or protocols that use the 802.3 length field of the Ethernet Header.

Choose Enhanced Ethernet mode when the bridged traffic is known to contain packets with protocols that use 802.2 type fields (in addition to IP or ARP), such as Appletalk, IPX, 3Com 8688, and so on. Note that, with certain traffic loads, performance may be impacted.

### Enabling GPS Control

If you are installing SUs in a location where one SU could interfere with another, you can install an optional GPS antenna on each SU and enable the GPS receiver to synchronize the TDD timing to the GPS signal.

To enable GPS control, click Enable in the GPS Control box.

### Aligning Antennas

Better alignment (“pointing”) of the antennas results in greater link reliability and robustness. An alignment tool is included in the QuickBridge Manager to assist with this process. It requires at least an approximate alignment of the antennas prior to its execution.

CAUTION! Put only one unit into “pointing mode” at a time.

Note: Before a link is established, the Slave indicates an RSL immediately, whereas the Master must complete the RF link before showing the RSL (up to 2 minutes). Therefore, Proxim recommends starting antenna alignment from the Slave.

To align the radios:

1. From the Settings tab, click on the Installation sub-tab at the bottom of the window. Then check On in the Audible Signal-Strength Indicator box (when this option is on and the radio is in “antenna pointing mode,” the radios emit a tone that increases in pitch as the radios are aligned.)

2. Click the Antenna Pointing button at the bottom of the window. A dialog box warning of the antenna-pointing mode’s out-of-service condition is displayed.

   CAUTION! If the link is already established, traffic is interrupted when you enter the Antenna Pointing Program.

3. Upon acknowledging the warning, the following dialog box is displayed:

4. The process of achieving the best receive signal level is an iterative process: Adjust antennas one at a time and adjust for the highest possible number in the Receive Signal Quality indicator box. At longer distances, the signal can be weak, but may be adequate to establish and maintain the link.

   Note: There is a slight delay (a few seconds) before the Receive Signal Quality bar moves to indicate adjustments to the antennas and the Receive Signal Level.

5. Select the Link Status tab to check the status of both radios. When a link is properly established, the Wireless Link indicator at the bottom of the Status screen is green. The Link State field also indicates “Link Established.”

## Settings Tab, Admin Sub-Tab

### Reassigning the Unit’s IP Address

Click the Settings tab and the Admin sub-tab to view or change the default current IP address. This appears in the Network box’s Radio IP Address field. Once a link has been established, you can re-assign the IP address of the remote radio. Any Class A, B, or C address is valid.

Set the local radio’s IP address to an address in the same subnet as the PC’s IP address. If you change the IP address of the local radio, you must change the IP address of the PC to an IP address in the same subnet as the radio in order to be able to use the Manager program.

To manage the QuickBridge II on the other side of a router, configure the subnet mask for the desired subnet and select a unique IP address supported on that subnet.

### Specifying a Default Gateway

The default gateway defines the address of the router for your network. The default gateway for each client points to the router for that subnet. QuickBridge uses the default gateway only when sending a QuickBridge-originated SNMP trap to a trap manager that is reachable through a gateway.

For example, if you defined a subnet 192.168.1.0, and the IP address for the router on that subnet was 192.168.1.254, all the clients in that subnet would have their default gateway set to 192.168.1.254.

### Assigning a Security Key ID

The Security Key is used to authenticate both radios for authorized point-to-point communication. Before setting the key, be sure the wireless link has been established. Click the Settings tab and the Admin sub-tab and enter a Security Key in the Security Key(0-16 characters): box. Click Save. With the wireless link established, the Security Key is assigned to both the Local and the Remote unit. The default Security Key is <blank> (there is no Security Key specified at the factory).

The Security Key can consist of up to 16 alphanumeric characters (a-z, A-Z, 0-9) and is case-sensitive. Non-alphanumeric keys such as * or # are not valid.

Example: ABC6543210jklmnO, or Sunnyvale94085, or BaldMountain888

This key is used to authenticate both radios for authorized point-to-point communication. Radios that do not have the same key cannot communicate with each other and will not establish a wireless link.

The default Security Key is <blank>. In other words, there is no Security Key specified at the factory.

CAUTION! With the wireless link established, changing the remote Security Key causes the local Security Key to be changed to match.

### Setting the SNMP Community String

Click the Settings tab and the Admin sub-tab to enter or change the Get and Set SNMP Community names in the Set SNMP Community String box.

SNMP delimits management domains by defining communities. Each community is identified by a name, which is an alphanumeric string of up to 255 characters defined by the user.

The Tsunami QuickBridge II SNMP agent defines strings of up to 10 characters (case-sensitive, numeric, and alphabetic).

Any SNMP entity (both managed entities and management stations) is assigned a community name by its user. In parallel, the user defines a list of the communities for each SNMP entity authorized to communicate with the entity, as well as the access rights associated with each community (this is the SNMP community name table of the entity).

## Upgrade Tab

### Upgrading Your System’s Firmware

Occasionally, flash upgrades may be made available, offering the ability to enhance some features of your QuickBridge II equipment. To upgrade the firmware for your QuickBridge II radios:

1. Start QuickBridge Manager; connect and login.

2. Click the Upgrade tab.

3. Select the Local or Remote unit to which you are going to download the firmware. (The current firmware versions are displayed in parentheses following “local” and “remote”.)

   CAUTION! When upgrading firmware from one side of the link, the remote side should always be upgraded first. Failure to do so may render the link inoperable, requiring the remote unit to be upgraded locally.

4. Click on Select and Download Code to begin the download; the Status window displays the current download progress.

5. After the progress bar indicates completion, verify that the new version of firmware is displayed in parentheses next to the local or remote selection area. (It can take up to 60 seconds for this area to be “refreshed” with the new information.)

6. Click on any other tab to exit this window when you have completed your download.

## About Tab

### Viewing Hardware and Firmware Version Numbers

To view the levels of QuickBridge II firmware, hardware, and software in your system, click the About tab. This window also provides information about contacting Proxim Technical Support.

Note: Click on the Firmware Version, QuickBridge II I Model Number, or Ethernet Physical Address in the Radio Info box to toggle the display to the other radio in the link. Click on any of these fields again to toggle back to the original radio information.

## Management with SNMP

In addition management with the QuickBridge Manager, you also can manage and partially configure a Tsunami QuickBridge II using the Simple Network Management Protocol (SNMP). Note that this requires an SNMP manager program, such as HP Openview or Castlerock’s SNMPc.

Tsunami QuickBridge II supports several Management Information Base (MIB) files that describe the parameters you can view or configure over SNMP:

- Proxim Enterprise MIB, distributed as the file “qb.mib”
- MIB-II (RFC 1213) System and SNMP groups

Proxim provides these MIB files on the Documentation and Software CD included with each Tsunami QuickBridge II unit. You must compile the above MIBs into your SNMP program’s database before you can manage a QuickBridge II using SNMP. See the documentation that came with your SNMP manager for instructions about how to compile MIB files.

The Enterprise MIB defines the read and read-write objects that can be viewed or configured using SNMP. These objects correspond to most of the settings and statistics that are available with the other management interfaces. See the Enterprise MIB for more information; the MIB can be opened with any text editor, such as Microsoft Word, Notepad, or Wordpad.

Support for Enterprise and MIB-II traps is included; these are generated when events occur on the QuickBridge II radio. Traps can be enabled and disabled individually for customization. (See the Enterprise MIB description for more detailed information).

# Troubleshooting

The following table summarizes link and other problems you might experience, along with recommended ways to solve the problems.

Problem | Possible Cause | How to Resolve
Cannot log on to the QuickBridge Manager | IP address of the PC is not in the same subnet as the QuickBridge II | Change the IP address of the PC to the same subnet as the QuickBridge II
Excessive traffic through radio | Redistribute your network traffic to reduce throughput to this radio
PC ARP table has old information | Clear PC ARP table at the DOS prompt
QuickBridge Manager cannot discover any units | PC ARP table has old information | Clear PC ARP table at the DOS prompt
Excessive traffic through radio | Redistribute your network traffic to reduce throughput to this radio
PC not connected to the QuickBridge II | Check all cable connections, also check straight and cross over cable rules
“ODU not connected” message displayed in configuration software | Wrong cable type used | If connecting a radio to a switch or hub, use a cross-over Ethernet cable; if connecting directly to a PC, use a straight-through cable.
Excessive traffic through radio | Redistribute your network traffic to reduce throughput to this radio
The QuickBridge II unit is not receiving power | Check the AC power connection and/or “cycle” power at the unit by unplugging and reinserting the RJ-45 connector
Radios remain in Slave/Master “searching for…” state indefinitely | Channel plan/frequency settings do not match on radios | Use the configuration software to set both radios to the same frequency plan.
Security key settings do not match on radios | Use the configuration software to define the exact same security key for both radios.
Far end unit is not receiving power | Apply power to the unit. Check or “cycle” power to the unit.
Antennas are not pointed at one another | Visually align the antennas so that they are pointed in elevation and azimuth to each other.
High interference over link (as determined by Packet Loss Rate) | Path between radios too great | Shorten the path between radios.
Conflict with other transmissions | Try setting both radios to a different channel plan.
Conflict with another radio or transmitter | Try moving one or both radios to a different location.

See the following sections for more detailed troubleshooting information.

## Data Stream Errors and Interference

This section describes troubleshooting methods for:

- Errors in the data stream
- Counteracting and evaluating interference

### Errors in the Data Stream

When the radios are in service, errors in the data stream can occur. This usually is known to the operator by either faulty data indications of downstream equipment or external bit error rate testing. The QuickBridge II employs a cyclic redundancy check (CRC) on all wireless data, strongly reducing the likelihood of such events. However, there always exists a finite probability of such events.

Some errors are exhibited on downstream data processing equipment or during an external BER test. In other cases, there may be data errors due to atmospheric conditions (fading), interference, or other reasons. In the case of these types of errors, the following information can be helpful to troubleshoot the radio link.

Indications | Possible Causes | Recommended Actions
During external BER test, test equipment indicates errors Downstream equipment (switch, router, and so on) indicates errors | · Path fading due to atmospheric conditions · Continuous or intermittent interference · Antenna problems, misalignment, or path clearance · Received signal level (RSL) is too strong · Far-end radio transmitter circuitry is faulty · Near-end radio receiver circuitry is faulty | Re-align antennas Verify 10/100 Base-T wiring

## Counteracting and Evaluating Interference

### Selecting a Different Frequency

The QuickBridge II radio offers several distinct non-overlapping frequency channel plans (see Available Frequency Plans). Changing the channel plan is the fastest way to determine whether interference is affecting the radio bridge. If the bridge is not operating (that is, the link is not established), you may have to change each unit’s frequency plan locally by connecting to the QuickBridge II unit directly with the PC. If the link is up, change the bridge’s frequency plan by selecting either the local or remote radio and changing the frequency plan. This changes both the remote and local units at the same time (see Reassigning the Frequency Plan).

### Re-Locating Equipment/Antenna

Occasionally, interference is caused by the radio being too close to another similar transmitter. Moving the radio or the interfering equipment can reduce or eliminate interference.

Interference countermeasures rely to some extent on the measurement of the received interference level and frequency. Prior to turning up a new hop, a spectrum analyzer can be used to monitor the spectrum at each end to check for possible interfering signals. For more details, see “Using a Spectrum Analyzer to Evaluate Potential Interference.

### Using a Spectrum Analyzer to Evaluate Potential Interference

Connecting a spectrum analyzer to an external antenna and using “peak hold” on, the spectrum across the receive frequency range of the radio (5725 – 5825 MHz) can be swept and any signals being received at levels above the radio’s specified threshold identified. If potential interfering signals are found, then the frequency plan can be changed to avoid a receive channel that may contain significant interference (see Configuring Settings). For example, you can reduce interference by moving from the 3A plan to the 4D plan.

Signals outside the receiver frequency range can be ignored; they will not cause interference.

When using a spectrum analyzer for determining the presence of interference, very narrow resolution bandwidth settings must be used to detect signals down to the radio’s threshold (approximately –89 dBm).

### Using Short Paths

The single most effective countermeasure against interference is to maintain “short path” length. This can be achieved by dividing long paths into multiple small paths by cascading hops. Intermediate repeaters can be formed using back-to-back QuickBridge II radios.

By definition, short path is a path where fades are extremely rare and signal levels vary by no more than plus or minus 3 dB during fades. This distance varies with the RF frequency. Typically, a short path is defined as any path length shorter than 5 miles/8 kilometers at 5.8 GHz.

# Site Planning

This section provides insight into the planning necessary to prepare your site for your broadband fixed wireless system.

The installation of a wireless network requires much the same basic planning as any wired network. The main difference is that the wireless signal requires some additional planning. This additional planning includes:

- RF path planning
- Site preparation
- Installation of outdoor components (such as outdoor units, antennas, lightning protection devices, and cabling suitable for outdoor conditions)

Although the technology implemented in this broadband fixed wireless system can make use of multipath signals, reducing the effect of obstructions in the path, the characteristics of the path must be examined carefully. With this knowledge, components and network requirements can be planned correctly for your specific application.

## General Considerations

A basic consideration is the physical location of the sites at each end of the link. Because microwave signals travel in a straight line, a clear line of sight between antennas is necessary. Frequently, however, the locations of the desired links are fixed. When a clear line of sight cannot be achieved, you must plan accordingly.

Other questions to consider include:

- Will a tower have to be constructed? Are permits required?

- Possibility of future obstructions: Will trees grow high enough to interfere with the signal? Are there plans to erect buildings between the sites that may obstruct the path?

- Availability of grounding: Good grounding is important. In areas prone to lightning, a lightning arrestor is strongly recommended.

- Distance between the indoor portion of the system (power and Ethernet adapter) and the user’s network.

The following sections should assist you in determining which information is critical to the site and in making appropriate decisions.

## Specific Site Planning

### Weather

Research any unusual weather conditions that are common to the site location. These conditions can include excessive amounts of rain, wind velocity, or extreme temperature ranges. If extreme conditions exist that could affect the integrity of the radio link, you should take these conditions into consideration early in the planning process.

Rain
  Except in extreme conditions, attenuation (weakening of the signal) due to rain does not require serious consideration for frequencies up to the range of 6 GHz. When microwave frequencies are at the 15 GHz range or above, attenuation due to rain becomes much more of a concern, especially in areas where rainfall is of high density and long duration. The systems discussed in this manual operate at frequencies below 6 GHz, so rain is not a concern.

Temperature
  Temperature can adversely affect the radio link when phenomena such as temperature inversion or very still air accompanied by stratification occur. Temperature inversion can negate clearances, and still air along with stratification can cause severe refractive or reflective conditions, with unpredictable results.

  Temperature inversions and stratification also can cause ducting, which can increase the potential for interference between systems that do not normally interfere with each other. Such effects of temperature are noticeable for path links farther than 3 miles.

Wind
  Any system components mounted outdoors are subject to the effect of wind. You should know the direction and velocity of the wind common to the site. Antennas and their supporting structures must be able to prevent these forces from affecting the antenna or causing damage to the building or tower on which the components are mounted. Antenna designs react differently to wind forces. This is known as wind loading.

Note: For definitions of wind loading for antennas and towers, see TIA/EIA-195 (for antennas) or TIA/EIA-222 (for towers) specifications.

### Lightning

You must always consider the potential for lightning damage to radio equipment when planning a wireless link. A variety of lightning protection and grounding devices are available for use on buildings, towers, antennas, cables, and equipment, whether located inside or outside the site, that could be damaged by a lightning strike.

Lightning protection requirements are based upon the exposure at the site, the cost of link downtime, and local building and electrical codes. If the link is critical and the site is in an active lightning area, attention to thorough lightning protection and grounding is critical.

#### Lightning Protection

To provide effective lightning protection, install antennas in locations that are unlikely to receive direct lightning strikes, or install lightning rods to protect antennas from direct strikes. Makes sure that cables and equipment are properly grounded to provide low-impedance paths for lightning currents. Install surge suppressors on adjacent telephone lines and power lines.

In regions that have extreme lightning occurrences, you should provide additional lightning protection for cables leading to the wireless radio. Place this optional lightning protection at points close to where the cable passes through the bulkhead into the building, as well as near the radio. A grounding screw is provided on the radio.

Note: Polyphaser manufactures lightning arrestors compatible with the QuickBridge II . For the Polyphaser distributor closes to you, go to the Polyphaser website (www.polyphaser.com). See .

### CAT5 Cable

When the entire interface cable, from the building entrance to the radio, is encased in steel conduit, no surge arrestors are required. Otherwise, each interface cable requires one surge arrestor within two feet of the building entrance.

### Interference

An important part of planning your broadband fixed wireless system is the avoidance of interference. Interference can be caused by affects outside the system. Good radio frequency (RF) planning can overcome most interference challenges.

Co-channel interference results when another RF link is using the same channel frequency. Adjacent channel interference results when another RF link is using an adjacent channel frequency. In selecting a site, a spectrum analyzer can be used to determine whether any strong signals are present and, if present, determine how close they are to the desired frequency. The further removed from your proposed frequency, the less likely they are to cause a problem.

### Antennas

For point-to-point applications, the narrower the antennas’ beamwidth, the better. QuickBridge II Ethernet Systems use integrated directional antennas that transmit and receive a relatively narrow beamwidth of radio energy, improving system performance by reducing the likelihood that surrounding RF clutter will interfere with reception.

The integral antennas have the following characteristics:

Type: Flat-panel antenna
3 dB Beamwidth: 10-degree
Polarization: Circular polarization, left-hand sense

Even when other licensees are not an issue, all these considerations are still important to reduce interference between your own adjacent installations. Antennas are tuned to operate on a specific group of frequencies. QuickBridge II offers two channel plans that provide a flexible tool for overcoming present and future interference.

Three or four non-overlapping channels (seven total directional channels) can be used to avoid existing traffic in the 5.8 GHz frequency band. If one part of the 5.8 GHz spectrum is occupied when QuickBridge II initially is deployed, another frequency channel can be selected to bypass the interfering signal. If interference arises after deployment, another frequency channel plan can be selected to “steer around” the impacted channel. Beamwidth and gain have been optimized in this equipment.

### Towers

When planning antenna placement, it might be necessary to build a free-standing tower for the antenna. Regulations and limitations define the height and location of these towers with respect to airports, runways, and airplane approach paths. These regulations are controlled by the FAA. In some circumstances, the tower installations must be approved by the FAA, registered with the FCC, or both. To ensure compliance, review the current FCC regulations regarding antenna structures. These regulations (along with examples) are on the FCC website at http://wireless.fcc.gov/antenna/.

## Path Planning

To get the most value from a wireless system, path planning is essential. In addition to the fact that radio signals dissipate as they travel, many other factors affect a microwave signal as it moves through space. All of these must be taken into account, because any obstructions in the path will attenuate the signal.

### Calculating a Link Budget

A link budget is a rough calculation of all known elements of the link to determine whether the signal will have the proper strength when it reaches the other end of the link. To make this calculation, consider the following information. A signal degrades as it moves through free space. The longer the path, the more loss it experiences. This free-space path loss is one factor in calculating the link viability. Free space path loss is easily calculated for miles or kilometers.

Availability represents the quality of a link. It is the ratio of the time that the link is available to the total time. This serves as a guide to the service that you can expect, on average, over a period of one year.

### Unlicensed Frequencies

#### U-NII

The FCC has identified the frequencies from 5.725 to 5.825 GHz as Unlicensed National Information Infrastructure (U-NII). This band can be used by anyone without having to obtain a license. However, you must use radio equipment that is “type approved” by the FCC or local government for use within the specific band.

#### ISM

The FCC has identified the frequencies from 5.725 to 5.850 GHz as Industrial, Scientific, and Medical (ISM). This band can be used by anyone without having to obtain a license. However, you must use radio equipment that is “type approved” by the FCC or local government for use within the specific band.

## Antenna Height and Placement

The outdoor placement and height of the QuickBridge II radios on a tripod, mast, or pole is critical to the proper operation of the equipment to provide error-free performance.

The wireless path will suffer from poor performance (high bit error rate or even complete outage) if the path has any of the following:

- Partial line-of-sight
- Partial or complete blockage due to foliage, buildings, curvature of the earth
- Temporary blockage due to cars, trucks, planes that move into and out of the path

The height of the QuickBridge II unit must be sufficiently above the blockage so that definite clear line-of-sight is achieved, as well as clearance in the first Fresnel Zone.

The Fresnel Zone is the shape of the radio beam between the two transmitters that is determined primarily by the distance between the antennas and the frequency of transmission. The Fresnel Zone is not a straight and narrow beam like a laser, but rather “bulged” in the middle like a football. Any blockage within 60% of this “bulge” would interfere with the performance of the wireless link.

Clearance in the path is defined as consisting of:

- Vertical clearance above the ground and the highest building or objects in the signal path, and
- Horizontal clearance from neighboring buildings and objects in the signal path.

The height of each end of the QuickBridge II hop must be high enough to ensure:

- A clear line-of-sight of each end
- Clearance over and above any obstructions within 60% of the first Fresnel Zone
- Clearance above the height due to the curvature of the earth

Distance between two transmitters | 0.6 x First Fresnel Zone | Earth Curvature | Total Clearance (minimum)
0.1 mile | 3 ft. | 0 | 3 ft.
0.25 mile | 4 ft. | 0 | 4 ft.
0.5 mile | 6 ft. | 0 | 6 ft.
1 mile | 9 ft. | 0 | 9 ft.
2 miles | 13 ft. | 1 ft. | 14 ft.
3 miles | 16 ft. | 2 ft. | 18 ft.
4 miles | 18 ft. | 3 ft. | 21 ft.
5 miles | 20 ft. | 4 ft. | 24 ft.
6 miles | 22 ft. | 6 ft. | 28 ft.

For example, for a path that is 3 miles long, the transmitters on each end of the hop must be 18 feet above any obstruction that is in the path. Therefore, if there is a 30-foot building in the middle of the path, then the two transmitters must be at least 48 ft (30 + 18 ft) above ground. This then dictates the height of the pole or mast; could be a 48 foot mast, or an 8 foot pole on a 4-story building.

Antennas should be placed with the following simple guidelines:

- Antennas must have clear line-of-sight of one another
- Mounted as high as possible above the ground to allow maximum clearance – above the actual surface of the earth, or above the height of the highest obstacle in the signal path
- Avoid trees in the signal path
- Install the unit at least 6 feet away from all other antennas
- Away from reflective surfaces such as metallic, mirror-coated glass walls, or large building walls
- Away from power and telephone lines

Note: The length of the CAT5 cable has no effect on the transmitter output power and therefore the distance the QuickBridge II unit can operate.

# Weatherproofing Connections

Weatherproof outdoor connections with waterproof butyl tape, as shown in the following photos:

Note: The illustrations in this appendix depict Enclosure A; however, weatherproofing also should be applied to Enclosure B units.

1. The following photo depicts the connector before weatherproofing. You will add three layers of tape; one 6-inch strip of butyl tape and two 6-inch strips of electrician’s tape are required.

2. First, wrap the connector using the first strip of electrician’s tape, as shown in photos 2, 3, and 4. This serves as a base for the butyl tape, letting you remove the butyl tape easily when necessary.

3. Next, in the same manner, apply a layer of butyl tape over the electrician’s tape, as shown in photos 5 through 8.

4. Finally, apply a layer of black electrician’s tape over the butyl tape for further protection, as shown in photos 9 and 10; the butyl tape alone is not UV protected.

# Interface Cables

## Interface Cable LEDs

Power / Ethernet Connection
Ethernet Link | Off Blink On | No link Ethernet activity Ethernet link established |  | RF Link | Off Blink On | No power (DC) No link Link established
GPS Transceiver Connection
RSL | Blink | The faster the blinking, the higher the RSL value. |  | GPS | Off Blink On | GPS disabled Enabled but not functioning Enabled & input okay

## Cable Descriptions

Cable #1 (50 meters, provided with radio)
Function Type Impedance Recommended cables Maximum Distance Connector type, radio end Connector type, power & Ethernet adapter end | Power (DC) and Ethernet connection Cat 5e, UV shielded 100 ohms 4 UTP, 24 AWG, UL rated 75 meters Note: The total length of cabling between the PC and the QuickBridge cannot exceed 100 meters, which includes both the cable from the PC to the power adapter and the cable from the power adapter to the QuickBridge. Due to DC power requirements, the maximum cable length between the power adapter and the QuickBridge is 75 meters. RJ-45 female, weatherized using weatherproof connector 8-pin DIN male connector with solder cup/cover or crimp pins to power & Ethernet adapter
Cable #2 (NOT provided with equipment; optional GPS receiver kit)
Function Type Connector type on radio end Maximum Length | GPS transceiver connection Serial cable, modified from vendor RJ-45 female, weatherized using weatherproof connector, with cover and O-ring over the connector 7 meters

## Connector Pin Assignments

### GPS Transceiver

GPS Transceiver Connector Pin Assignments
Pin | Description | Pin | Description
1 | 5v VCC | 5 | GPS TX Data (from GPS)
2 | GND | 6 | 1PPS (input from GPS)
3 | GPS RCV Data (to GPS) | 7 | NC (not connected)
4 | GPS Enable (active Low) | 8 | NC (not connected)

### POWER Data Cable

DIN PIN Twisted Pair | COLOR | SIGNAL | RJ-45 PLUG PIN
2 7 | BLUE WHITE / BLUE | +24 VDC -24 VDC | 4 5
6 8 | WHITE / BROWN BROWN | +24 VDC -24 VDC | 7 8
5 3 | WHITE / ORANGE ORANGE | Rx+ Rx- | 1 2
1 4 | WHITE / GREEN GREEN | Tx+ Tx- | 3 6
Color codes are for reference only

### Ethernet Port Connector

The Ethernet connector supports 10/100 Base-TX Ethernet serial data using one 8-pin modular jack connector. This port allows Ethernet data to be passed across the hop.

Ethernet Port Connector Pin Assignment Description
Pin | Description | Signal Direction
1 | Rx Data In + | Input
2 | Rx Data In - | Input
3 | Tx Data Out + | Output
4 | * (connected to cross-talk suppression circuits) |
5 | * |
6 | Tx Data Out - | Output
7 | * |
8 | * |

# Lightning Protection Recommendation

All outdoor electronic equipment is susceptible to lightning damage. Proper grounding to national and local codes is instrumental in providing human safety. Lightning Protection is used to maximize the reliability of the electronic system by diverting the excess energy that can be induced on any transmission lines (data, power) through a series of surge protection devices. The energy is dissipated through heat and also diverted to ground.

## What Protection is Provided?

All Tsunami QuickBridge radio units have built-in lightning protection on both the power supply lines and the Ethernet lines. There are TVS diodes that provide protection to IEC 61000-4-05. Proxim Corporation uses “well-design” practices incorporating these devices in the Tsunami QuickBridge products.

## Why is Additional Protection Recommended?

Lightning, even with the built-in protection, can still damage outdoor Tsunami equipment. This can occur for any number of reasons, such as an improperly grounded installation, or when the amount of transient energy from nearby lightning exceeds what the devices can handle.

If a Tsunami unit fails due to damage from lightning, the link is out-of-service until the unit is replaced or repaired. An external, revertive protection device can provide a higher level of protection and greater probability of surviving lightning transients without damage to the Tsunami equipment. If damage does occur, most likely it is to the lightning protection devices and not the Tsunami equipment. Remember, even with external lightening protection, damage can still occur to the Tsunami outdoor units.

## What Protection is Recommended?

Proxim recommends the following for its QuickBridge products:

| Installation Requirement
Proxim Product | Industrial | Commercial | SOHO
Tsunami QuickBridge (2 units) | (1) | (1) or (2) (up to 50 meters) | (1) or (2) (up to 50 meters)
(1) PolyPhaser 101-1218W-A.1 CAT 5 Data Protector Contact Information: Polyphaser Corporation 2225 Park Place P. O. Box 9000 Minden, Nevada 89424 1-800-325-7170 (775) 782-4476 (fax) | (2) Transtector 1101-TSU Surge Supressor Contact information: Transtector Systems OEM Division 10701 Airport Drive Hayden Lake, ID 83858 (208) 762-6069 (208) 752-6155 (fax) oem@transtector.com

### PolyPhaser CAT 5 Data Protector

This is a heavy-duty aluminum, weather-tight enclosure for outdoor use that serves to protect wireless outdoor units, as well as the indoor power & Ethernet adapter and connected line equipment inside the roof penetration. This product can be used for all CAT 5 cable lengths up to 100 meters from the outdoor wireless unit to the indoor power & Ethernet adapter.

The Polyphaser Data Protector uses Cascade Technology. This is a multi-stage technology that is superior to single stage because of high surge current capacity and fast response time. The unit is designed to fit in-line onto the outdoor CAT 5e cable, using two weatherized plug openings for the cable to enter and exit. The existing cable is cut, dressed, and reconnected onto two sets of 8 screw terminals inside the Data Protector.

### Transtector Systems Surge Supressor

This outdoor-use, molded plastic, weather-tight enclosure is a surge suppressor designed to protect the QuickBridge II unit from lightning damage. This product can be used for CAT 5 cable lengths up to 50 meters from the outdoor wireless unit to indoor power & Ethernet adapter.

The 1101-TSU uses silicon avalanche suppression diodes (SASD) to provide lower voltage protection level (VPL). This technology provides a superior protection level over traditional gas tube type devices. The unit is designed to fit onto a CAT 5 cable in a pass-through configuration. The input and output connections can be made at two sets of 8-screw terminals, or two 8-pin DIN style connectors. This arrangement allows the installation of the connectorized CAT 5e cable directly into the Surge Suppressor, or with a cut cable.

## How are the Lightning Protection Units Connected to the CAT 5 Cable?

The lightning protection units recommended are designed to be installed in-line onto the CAT 5e cable that connects the outdoor QuickBridge unit to the indoor power adapter.

The lightning protection device has a Surge (cable-facing) side, and an Equipment (equipment-facing) side. The Equipment side faces the outdoor QuickBridge unit or the indoor power & Ethernet adapter. The Surge side faces the long length of cable; when installing two lightning protection units, each unit’s Surge side face one another.

See pin-out information for each unit in “Protection Unit Specifications” for connecting the cable to the protection device.

## Where Should the Protection Units be Located?

At least one unit should be installed near every outdoor QuickBridge unit. General guidelines are:

- Locate protector as close to the outdoor QuickBridge unit as possible, where the lightning protection unit can be securely mounted to a flat surface and grounded properly. Ideally, this should be no further than five feet away from the unit.

- Locate one protector at the roof penetration point, outside, so that the cable immediately enters the building after the protection unit. This protector is optional if the distance from the first unit to the roof penetration point is relatively short (under 15 feet).

Installing two protectors provides the maximum protection against lightning damage to the outdoor QuickBridge II unit and the indoor power & Ethernet adapter, especially if the CAT 5 cable length is greater than 15 meters.

The QuickBridge contains two complete radio units. A total of two or four lightning protection units should be ordered per QuickBridge link.

## Lightning Protection Specifications

### PolyPhaser 101-1218W-A.1 Data Protector

Surge:............................................................... BellCore 1089 10/100 m sec, 100A

Temperature:.................................................... -40°C to +65°C storage/operating +50°C

Maximum Characteristics Data (Ethernet):

Turn-on:............................................................ +7.0 VDC ± 10%

Resistance:....................................................... 1 ohm

Capacitance:..................................................... 15 pf Line to Ground, 30 pf Line to Line

Data Rage:........................................................ Up to 100Mbps (100BT)

Maximum Characteristics DC:

Turn-on:............................................................ ± 68 VDC ± 10%

Resistance:....................................................... 0.02 ohm

User Current:.................................................... 2A max.

Size................................................................... L x W x T: 6.53” x 2.77” x 1.25”

Mounting............................................................ Panel or pole mount

Pinout and Wiring Specifications:

Surge Side | Equipment Side | Application | Original Wiring (Green on RJ45 Pin 1) | EIA 568B Wiring (White/orange on RJ45 Pin 1)
Vdc in | VDC out | 48Vdc | White/Orange | Blue
RTN in | RTN out | Ground | Orange | White/Blue
Vdc in | VDC out | 48Vdc | White/Brown | White/Brown
RTN in | RTN out | Ground | Brown | Brown
Tx+ in | Tx+ out | Tx + | Green | White/Orange
Tx- in | Tx- out | Tx - | White/Green | Orange
Rx+ in | Rx+ out | Rx + | Violet | White/Green
Rx- in | Rx- out | Rx - | White/Violet | Green
GND | GND | Shield, if req. |  |

Note: VDC in (out) and RTN in (out) pinouts are based upon applying a positive 24 FDC to the VDC terminal and applying the dc ground to RTN.

For additional information, go to www.polyphaser.com.

### Transtector Systems ALPU-TSU Surge Suppressor

Surge:........................................................................... IEEE 10/1000 Long Wave, 150 A peak

Temperature:............................................................... -40°C to +80°C operating and storage

Ethernet Characteristics:

Transfer Rate:.............................................................. CAT 5

Maximum Continuous Operating Voltage:................... 20 VDC

Protection Mode:.......................................................... Line to Line, Line to Ground

Response Time (max):................................................ 5 nanoseconds

Standby Power (max):................................................. <0.5 Watt

Peak Power:................................................................. 5000 Watts

DC Characteristics:

Service Voltage:........................................................... 20 VDC

Maximum Continuous Operating Voltage:................... 80 VDC

Response Time (max):................................................ 5 nanoseconds

Standby Power (max):................................................. <0.5 Watts

Peak Power:................................................................. 20,000 Watts

Protection Mode:.......................................................... Line to Line

Size:............................................................................. L x W x T: 6.13” x 4.5” x 2.5”

Pinout and Wiring Specifications:

Surge Side | Equipment Side | Application | Original Wiring (Green on RJ45 Pin 1) | EIA 568B Wiring (White/Orange on Pin 1)
VDC in | VDC out | +24 VDC | White/Orange | White/Blue
RTN in | RTN out | Ground | Orange | Blue
VDC in | VDC out | +24 VDC | White/Brown | Brown1
RTN in | RTN out | Ground | Brown | White/Brown
Tx+ in | Tx+ out | Tx + | Green | White/Orange
Tx- in | Tx- out | Tx - | White/Green | Orange1
Rx+ in | Rx+ out | Rx + | Violet | White/Green
Rx- in | Rx- out | Rx - | White/Violet | Green
GND | GND | Shield, if req. |  |

1The RTN pins in the ALPU-TSU are floating ground. The DC connection (+24 VDC and Gnd) will be unaffected if the ORANGE (or BLUE depending upon the color code on pin 1 of the RJ45), or the WHITE/ORANGE i(or White/Blue) wire is connected to the RTN pin.

For additional information, go to www.transtector.com

## Important Information About Pinouts and Wiring

#### Color Coding

The color code of the Ethernet cable used between the power supply and the radio depends upon the particular QuickBridge radio. For example, the color code of the Ethernet cable used between the power supply and the radio has been changed to the standard EIA 568B wiring color code. See the illustration at the bottom of the next page.

Normally this does not present a problem since the cable is wired the same end-for-end; just the colors have changed. When using a lightning protector, however, the color code of the cable must be noted to make sure that the lightning protection is connected properly. Incorrect wiring can cause damage to the lightning protector. Here are the two different color codes.

Signal | RJ45 Pin# | DIN Pin# | Original Wiring Color | 538B Wiring Color
Rx+ | 1 | 5 | Green | White / Orange
Rx- | 2 | 3 | White / Green | Orange
Tx+ | 3 | 1 | Blue | White / Green
+V | 4 | 2 | Orange | Blue
-V | 5 | 7 | White / Orange | White / Blue
Tx- | 6 | 4 | White / Blue | Green
+V | 7 | 6 | Brown | White / Brown
-V | 8 | 8 | White / Brown | Brown

Cable Part# on Label | Length | Original Revisions | EIA 568B Revisions
100-00737-01 or 53999 | 25 m | 90, 1, 2, or 3 | 4, 5, or >
67085 | 25 m | None | All
100-00737-02 or 59400 | 50 m | 1, 2, or 3 | 4, 5, or >
67086 | 50 m | None | All

The color code that a cable is using can be identified by either looking at the color of the wire in pin one of the RJ45 connector (the pin on the left with the tab facing down and the cable coming towards you). If the wire in pin 1 is Green, then you have the original color code, if the wire is White / Orange then you have an EIA 568B wired cable.

Alternatively, if you do not have access to the RJ45 (for installed systems), you may reference the part number and revision label on the cable that is usually near the DIN connector. Refer to the following table to determine which color code cable you have based on the cable.

Cable Part # on Label | Original Revisions | EIA 568B Revisions | Length
100-00737-01 or 59399 | Rev 90, 1, 2, 3 | Rev 4, 5, or > | 25m
67085 | None | All Revisions | 25m
100-00737-02 or 59400 | Rev 1, 2, 3 | Rev 4, 5, or > | 50m
67086 | None | All Revisions | 50m
100-00737-03 or 59401 | Rev 1, 2, 3 | Rev 4, 5, or > | 75m
67087 | None | All Revisions | 75m

# Security

The QuickBridge II provides ways to prevent unauthorized users from communicating with the QuickBridge II unit. You can password protect the system to prevent unauthorized users from accessing the system. Also, you can use the Link Security Key to scramble the transmitted signal, preventing unauthorized units from detecting the signal.

## Password Protection

The QuickBridge II provides two levels of password protection:

User level
  Lets the user display the system’s current status only.

Admin level
  Lets the user display the system’s status and change its configuration.

The default password is <blank>. By default, password protection is turned off. Password protection for either password level (user or admin) can be turned on and off.

Passwords can be from 1 to 16 characters; any combination of alphanumeric characters are allowed.

Note: If you forget your password, you can contact Technical Support to obtain a new password. See Technical Support for contact information.

### Specifying a User-Level or Admin-Level Password

To define the password for either access level from the QuickBridge Manager:

1. Select the Connection tab and Login to the radio you want to change (if not already logged in).

2. Click the Admin Level button.

3. Select the level of password you wish to modify from the drop-down menu: User Level or Admin Level.

4. Enter the current password in the current password: field (leave blank if never set), then enter the new password twice in the fields provided.

5. Click OK; the following message box is displayed:

6. After entering the new password, select Logout.

7. Login with the new password.

   Upon successful login, the Link Status window for the selected radio is displayed.

### Turning Off Password Protection

To turn off password protection, reset both passwords to <blank>. Do this by returning to the Security window and entering the current password while leaving the two new password entries blank (for both the User and Admin access levels).

Note: If you turn off both display-level and user-level password protection, restart the unit to refresh its memory.

### Logging In

If a password has been specified for the access level you desire, you must log in to the system with the appropriate password.

## Security ID on the QuickBridge II Link

Wireless transmissions on the QuickBridge II employ PN scrambling whereby all emissions are "shuffled." The shuffling method is uniquely determined by the 16-character security key so that the receiving device can correctly "un-shuffle" the transmission. With a mismatched security key, the shuffled transmissions are unusable to the device attempting to receive the signal.

The 16-character Security Key is user-defined using the QuickBridge Manager program. The two keys, set for both the Master and Slave units, must match before a link can be established. The ID code is made up of 0-9, a-z, and A-Z characters. In addition, the two units must match frequency plans and one must be designated a “Slave” and the other must be “Master”. Two Slaves cannot talk to one another, and two Masters cannot talk to another.

# Technical Specifications

The following technical specification is for reference purposes only. Actual product performance and compliance with local telecommunications regulations may vary from country to country. Proxim Corporation will only ship products that are type approved in the destination country.

Radio Unit
Maximum Ethernet Packet Size | 1610 bytes
Maximum Transmitter Power (EIRP) | +36 dBm, maximum (includes +20 dBi antenna gain)
Receiver Sensitivity QuickBridge II 60 | -89 dBm for 18 Mbps setting -81 dBm for 34 Mbps setting -77 dBm for 54 Mbps setting
Operating Frequency Range | 5742-5808 MHz
Access Method | Time Division Duplex (TDD)
Integrated Antenna | 20 dBi (10” x 10”) LHCP
Maximum Receive Threshold | -20 dBm error free
Latency | 5.0 msec max
Modulation Technique | QPSK with equalization and FEC for 18 Mbps; 8QAM for 34 Mbps; 16QAM for 54 Mbps
Security ID | 16 character Security ID used for authentication and PN transmission scrambling
Frequency Channels | 7 channels total (3 in plan A, 4 in plan B)
Regulatory Compliance | FCC Part 15.407 (U-NII), 15.247 (ISM) IC RSS210 Layer 2 transparent bridge – IEEE 802.3

Interfaces
Ethernet Interface | 10/100 Base-T via AC power and Ethernet adapter
Ethernet Connector | RJ45, female with weather protected shell
Interface Cable | CAT5 cable

Management
Local and Remote Access | QuickBridge Manager (java-based GUI) for discovery, status, and configuration
Software Upgradeable | Over-the-air reprogramming for upgrades
Security | Two-level password access on Manager

Power/Environment/Safety
Radio | +18 to +28 Volts DC, 0.8 Amps, power over Ethernet Cat5 cable
Power Adapter | 100-240 Volts AC
Operational Temperature | 0° to 55° C (indoor), -25° to 65° C (outdoor)
Humidity | 95% non-condensing (indoor power and Ethernet adapter) 5% to 100% condensing (outdoor unit)
Altitude | Up to 10,000 ft
Windloading | 115 mph

Physical Unit/Installation Details
Radio Unit | Pole Mounting, 1.5-3.00” diameter
Size (per QuickBridge II unit) | 10.5 x 10.5 x7 inches, 26.5 x 26.5 x 14.4 cm
Weight (per QuickBridge II unit) | 10 lbs/4.5 kg
Shipping weight (per QuickBridge II Kit) | 42 lbs/20 kg

Installation Kit
The Installation Kit provides necessary instructions, cabling, mounting hardware, and software to install the radio at the customer’s premises, and includes the following items.
– Quick Install Guide for QuickBridge II – Interface cable – 50 meters | – Mounting hardware for pole attachment – QuickBridge Manager on CD-ROM

Optional Accessories
AC-5200 Cable Termination kit
Frequency Plans
Channel Plan 3 | Channel Plan 4
3A: 5742.19 MHz | 4A: 5743.85 MHz
3B: 5775.39 MHz | 4B: 5764.60 MHz
3C: 5808.59 MHz | 4C: 5785.35 MHz
| 4D: 5806.10 MHz

# Technical Support

If you are having a problem and cannot resolve it with the information in Troubleshooting, gather the following information and contact Proxim Technical Support:

- What kind of network are you using?
- What were you doing when the error occurred?
- What error message did you see?
- Can you reproduce the problem?

Be sure to obtain an RMA number before sending any equipment to Proxim for repair.

To ask a question of Technical Support, be sure to include the part number and the serial number of the product or products in question. We cannot respond to your inquiry without this information.

To contact Proxim Technical Support by telephone, dial 1-866-674-6626 (Domestic) or 1-408-542-5390 (International). Telephone support hours are 6:00 am to 5:00 pm Monday through Friday, PST.

To see whether answers to your questions already exist, access Proxim’s Support Knowledgebase at http://support.proxim.com/.

To contact Technical Support online, go to http://support.proxim.com/cgi-bin/proxim.cfg/php/enduser/ask.php. Fill in the information requested and click Submit Question.

# Notices

## Regulatory Notice

This equipment has been tested and found to comply with the limits for a class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver.
- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
- Consult the dealer or an experienced radio/TV technician for help.

Shielded cables and I/O cords must be used for this equipment to comply with the relevant FCC regulations.

Changes or modifications not expressly approved in writing by Proxim Corporation may void the user's authority to operate this equipment.

This device complies with RSS-210 of Industry Canada. Operation is subject to the following two conditions: (1) this device may not cause interference, and (2) this device must accept any interference, including interference that may cause undesired operation of the device.

## Additional Notice

This device must be professionally installed.

The QuickBridge II units are intended for mounting on a roof or the side of a building. Installation must not be attempted by someone untrained or inexperienced in this type of work. These units must be installed by a suitable, trained, professional installation technician or by a qualified antenna installation service. Site pre-requisites must be checked by a person familiar with the national electrical code and with other regulations governing this type of installation.

## Safety Notice

This product is intended to be installed, used and maintained by experienced telecommunications personnel only. Equipment is suitable for mounting on concrete or other noncombustible surface only.

- QuickBridge II units have been evaluated to the U.S. and Canadian (Bi-National) Standard for Safety of Information Technology Equipment, Including Electrical Business Equipment, CAN/CSA C22.2, No. 950-95 * UL 1950, Third Edition, including revisions through revision date March 1, 1998, which are based on the Fourth Amendment to IEC 950, Second Edition. In addition, this product was also evaluated to the applicable requirements in UL 1950, Annex NAE.

- This unit is intended for installation in a Restricted Access location in accordance with Articles 110-18, 110-26, and 110-27 of the United States National Electric Code ANSI/NFPA 70.

- This equipment should be installed in accordance with Article 810 of the United States National Electrical Code.

- When installed, this equipment is intended to be connected to a Lightning/Surge Protection Device that meets all applicable national Safety requirements.

- To avoid injury, risk of fire, and damage, do not connect this product directly to an antenna. Ensure that proper lightning isolation is also provided between this unit and other equipment.

- Equipment is to be used and powered by the type of power source indicated on the marking label only.

- QuickBridge II units are intended to be connected to a + 24 VDC power source which must be electrically isolated from any AC sources and reliably earthed. Only a DC power source that complies with the Safety Extra Low Voltage (SELV) requirements in the Standard for the Safety of Information Technology Equipment, Including Electrical Business Equipment, CAN/CSA C22.2, No. 950-95 * UL 1950, Third Edition, can be used with this product. A 15-Amp circuit breaker is required at the power source. In addition, an easily accessible disconnect device should be incorporated into the facility wiring. Always use copper conductors only for all power connections.

- This equipment is intended to be earthed. If you are not using the power and Ethernet adapter provided by Proxim Corporation, you will need to connect the earthing conductor of your power source to the earthing terminal located on the back of the unit; or, connect an earthing conductor between the unit's earthing terminal and your earthing point. For safe operation, always ensure that the unit is earthed properly.

- Do not connect or disconnect the power cable to the equipment when the other end of the cable is connected to the dc power and Ethernet adapter.

- Servicing of this product should be performed by trained personnel only. Do not disassemble this product. By opening or removing any covers you may expose yourself to hazardous energy parts. Incorrect reassembly of this product can cause a malfunction, and/or electrical shock when the unit is subsequently used.

- Do not insert any objects of any shape or size inside this product while powered. Objects may contact hazardous energy parts that could result in a risk of fire or personal injury.

- Do not spill any liquids of any kind on or inside this product.

- Always ensure that sufficient amount of space is provided above and below this product.

- If this product is to be powered from the same source as other units, ensure that the power and Ethernet adapter circuit does not get overloaded.

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