User Manual

Wireless Innovations Group
2601 Telecom Parkway
Richardson, Texas 75082
400/800 MHz Fiber Optic & RF Fed Bi-Directional
Amplifier Operations / Maintenance Manual
DWG NO:
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Date
:06/16/2004
Page:
64 of 63
The RF fed BDA uplink gain setting was performed at the factory and no field adjustments are
required. For a 48 dB gain setting, the maximum input signal level is – 14 dBm with ALC
active and – 43 dBm without ALC active. Note, the ALC is activated at the factory and when
the input level exceeds – 43 dBm, the ALC will go into operation.
7. BDA MAINTENANCE / TROUBLESHOOTING & MODULE CARE
7.1 Maintenance
The BDA does not require any routine or preventative maintenance once in operation.
7.2 BDA Troubleshooting Procedure
FAULT Troubleshooting Procedure
No Downlink Signal -Verify BDA power is switched “ON”.
-Check fiber fed BDA cable connections.
-Check RF fed BDA cable connections.
-Verify fiber fed BDA Rx fiber port LED is green.
-Check Radio Transmitter at base station.
No Uplink Signal -Verify BDA power is switched “ON”.
-Check fiber fed BDA cable connections.
-Check RF fed BDA cable connections.
-Check fiber optic connection at base station Fiber Optic
Transceiver Chassis.
-Check for output signal at Fiber Optic Transceiver
Chassis located at the base station.
Low FF BDA Downlink Gain
(Gain Set: 48 dB)
-Using a Signal Generator, inject a –18 dBm signal at base
fiber optic transceiver and measure output power level of
BDA with Spectrum Analyzer (+30 dBm).
Low RF BDA Downlink Gain
(Gain Set: 48 dB)
-Using a Signal Generator, inject a – 18 dBm signal in the
base station port of the BDA and measure the output
power level of BDA with Spectrum Analyzer (+30 dBm).
Low FF BDA Uplink Gain
(Gain Set: 48 dB)
-Using a Signal Generator, inject a – 43 dBm signal at the
BDA antenna port and measure the output power level at
the Fiber Optic Transciever Chassis at the base station port
using the Spectrum Analyzer (- 4 dBm).
Low RF BDA Uplink Gain
(Gain Set: 48 dB)
-Using a Signal Generator, inject a – 43 dBm signal at the
BDA antenna port and measure the output power level at
the BDA base station port using the Spectrum Analyzer
(+ 5 dBm).
7.3 Tools & Test Equipment