Adtran TRC4208L1 Manual Do Utilizador

Section 3 Engineering Guidelines

TRACER 4208 System Manual

612804208L1-1A

EQUIPMENT DIMENSIONS

The TRACER 4208 unit is 17.12” W, 10.80” D, and 1.72” H, weighs 7 lbs, and can be used in 19 or
23-inch rack-mount configurations.

POWER REQUIREMENTS

The TRACER 4208 system has a maximum power consumption of 18 W and a maximum current draw of
0.86 A (at 21 VDC).

REVIEWING THE FRONT PANEL DESIGN

The front panel contains

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 4208 system.
Figure 1 identifies the various bantam interfaces and the LEDs.

Figure 1. TRACER 4208 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.

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).

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.

ALARM

T1A T1B T1C T1D T1E T1F T1G T1H

TRACER 4208

Status LEDs

TX PWR

RSSI

GND