User Manual

TRACER 4205 System Manual Section 3, Engineering Guidelines
612804205L1-1A © 2002 ADTRAN, Inc. 25
TX PWR Monitoring Interface
The TX PWR voltage is a function of the selected transmit power level. This voltage ranges approximately
from 0 to 5V, with 0V corresponding to +5 dBm (3 milliwatts) and 5V corresponding to +20 dBm (100
milliwatts).
Front Panel LEDs
With the TRACER 4205 powered-on, the front panel LEDs provide visual information about the status of
the TRACER 4205 system. Table 1 provides a brief description of the front panel features, and Table 2
(continued on page 27) provides detailed information about the LEDs.
Table 1. TRACER 4205 Front Panel Description
Feature Description
DS3 Loopback Switch Allows quick activation/deactivation of DS3 line loopbacks
RSSI Interface DC voltage indicating strength of the received signal at the antenna
TX PWR Interface DC voltage indicating strength of transmitted signal
GND Interface Ground reference for RSSI and TX PWR Interfaces
Status LEDs Provides status information about the system
Table 2. TRACER 4205 LEDs
For these LEDs... This color light... Indicates that...
PWR Green (solid) the TRACER 4205 is connected to a power source.
Off the TRACER 4205 is not currently powered up.
PLAN A Green (solid) the TRACER 4205 is transmitting on Frequency Plan A.
Off the TRACER 4205 is not transmitting on Frequency
Plan A.
PLAN B Green (solid) the TRACER 4205 is transmitting on Frequency Plan B.
Off the TRACER 4205 is not transmitting on Frequency
Plan B.
RF DOWN Red (solid) there is a communication problem between the local and
remote TRACER 4205 systems.
RF LOW Red (solid) the RSSI level is below suggested minimum threshold.
TST Amber (solid) unit is performing power-on self-test.
RAI Red (solid) the TRACER 4205 received a remote alarm in the DS3 EOC
channel (bits X1 and X2 are both set to zero).