ADTRAN 12804108L1A, Системное руководство

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Section 3 Engineering Guidelines TRACER 4108/4208 System Manual
26 © 2003 ADTRAN, Inc. 612804208L1-1B
1. EQUIPMENT DIMENSIONS
The TRACER 4108/4208 unit is 17.12” W, 10.80” D, and 1.72” H and can be used in 19 or 23-inch rack-mount
configurations.
2. POWER REQUIREMENTS
The TRACER 4108/4208 system has a maximum power consumption of 21 Watts and a maximum current draw of
1.0 Amp (at 21 VDC).
3. 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 4108/4208 system.
Figure 1 identifies the various bantam interfaces and the LEDs on a TRACER 4208 front panel. The TRACER 4108
front panel layout is identical to the TRACER 4208 front panel.
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 from approximately 0 to 5 Volts DC (VDC). An RSSI Calibration sheet is shipped with the
system to provide the installer a cross-reference between actual received signal level (in dBm) and RSSI voltage.
This sheet is useful for verifying link budget calculations and ensuring proper equipment installation.
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).
ALARM
T1A T1B T1C T1D T1E T1F T1G T1H
TRACER 4208
Status LEDs
TX PWR
RSSI
GND