MLS MLSH041 Manuel d'installation télécharger pdf (Page 18)

LBI-38425A ALIGNMENT AND TROUBLESHOOTING PROCEDURES

5.2 TRANSMITTER

Alignment and troubleshooting procedures for Transmitter circuitry on the

Transmitter/Receiver board CMN-233 are as follows:

5.2.1 General Description of Adjustment

This manual is prepared for adjustments and confirmations of the Exciter/PA section and

covers the following items:

5.2.2 Measuring Instruments

•

AVR (DC Power Supply DC 0-20V, 20A)

•

Power Meter (usable at the value above 80 W)

•

Directional Coupler

•

Signal Generator

•

Spectrum Analyzer

•

Attenuator (30 dB, above 80 W)

•

Tester

STOP

START

Confirming the Voltage

Confirming the APC Section

Adjustment and Setting of the Transmitting Output

Initial Setting

DC power ON

SG, PTT ON

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MLS MLSH041 Manuel d'installation Page 18