MLS MLSH041 Manuel d'installation télécharger pdf (Page 23)

ALIGNMENT AND TROUBLESHOOTING PROCEDURES LBI-38425A

5.3 RECEIVER

Alignment and Troubleshooting procedures for Receiver Circuitry on

Transmitter/Receiver Board CMN-233 are as follows:

5.3.1 Receiver Alignment

Equipment Required:

•

RF Signal Generator (150.8 – 174 MHz)

•

DC Voltmeter

•

Frequency Counter (up to 500 MHz with 0.05 V sensitivity)

•

Audio Level Meter and Distortion Analyzer

•

4 Ohm, 6 Watt Resistor

5.3.1.1 Preliminary Adjustment

1. Connect 13.8 VDC to P2.

Set MONITOR switch to “out” position.

Select desired channel.

Disable Channel Guard by connecting ground to J701-7.

Connect RF Signal Generator to antenna jack J1.

NOTE

Make sure the transmitter is properly aligned before aligning the receiver

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MLS MLSH041 Manuel d'installation Page 23