ADC ClearGain Dual Inline Tower Mounted Amplifier System Manuale Utente Scaricare il pdf (Pagina 19)

ADCP-75-214 • Issue 2 • September 2006

Page 13

4.1 Troubleshooting

1. Observe and record PDU LED status. Disable or disconnect RF from BTS. Remove any surge

protectors. Disconnect Bias-T from the antenna feedline / hardline / jumper / protector.

2. Multimeter checks:

a. Measure voltage on the Bias-T _______ VDC. Normal is 15 VDC.

b. Measure resistance of the feedline _______ Ohms. Normal is High or Very high Ω

(KΩ/ΜΩ).

3. Antenna/cable analyzer checks. Measure the in-band RL/VSWR of the system ______ dB

or ratio. Check distance to Fault for anomalies.

PDU

FEED LINE

PDU

FEED LINE

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ADC ClearGain Dual Inline Tower Mounted Amplifier System Manuale Utente Pagina 19