User Manual
Table Of Contents
- Trademarks
- About this Manual
- Federal Communications Commission Radio Frequency Interference Statement
- Warranty and Customer Service
- Customer Service, Product Support Information, and Training
- 4205 System Description
- Microwave Path Engineering Basics
- Engineering Guidelines
- Network Turnup Procedure
- User Interface Guide
- Troubleshooting Guide
Section 3, Engineering Guidelines TRACER 4205 System Manual
24 © 2002 ADTRAN, Inc. 612804205L1-1A
1. EQUIPMENT DIMENSIONS
The TRACER 4205 unit is 19” W, 10.5” D, and 1.75” H, weighs 7 lbs, and can be used in rack-mount
configurations.
2. POWER REQUIREMENTS
The TRACER 4205 system has a maximum power consumption of 25W and a maximum current draw of
1.2A (at 21 VDC).
3. REVIEWING THE FRONT PANEL DESIGN
The front panel contains a single control switch for activating a DS3 line loopback, RSSI and TX PWR
monitoring interfaces, a GND interface for reference with the monitoring interfaces, and status LEDs to
provide visual information about the TRACER 4205 system. Figure 1 identifies the DS3 loopback switch,
the various bantam interfaces, and the LEDs.
Figure 1. TRACER 4205 Front Panel Layout
RSSI Monitoring Interface
The RSSI voltage is a function of the signal strength at the receiver and is used to measure the received
signal strength. RSSI varies approximately from 0 to greater than 4 Volts (V), with 0V corresponding to a
weaker received signal and 4V or better corresponding to a stronger received signal.
The voltage level present at the RSSI test point represents only a relative signal level of
receive strength from the far end. No direct correlation can be made between RSSI voltage
levels and actual receive levels in dBm. This test point is provided to assess relative signal
level for alignment of antennas.
Status LEDs
TX PWR
RSSI
DS3 Loopback
Switch
GND