Philips 50 T Series Service Manual page 72

Transmitter VCXO Test

Test Point Correct Signal
4 Peak Level >-6dBm
Figure 19 RF Output Signal
Test Point Correct Signal
5 Peak Level >-12dBm
9. Check the modulation. To check the modulation the Spectrum
Analyzer should be set as follows:
CENTER frequency
Frequency Span
Resolution Bandwidth
Video Bandwidth
Reference Level
Action if signal incorrect
Replace Transmitter VCXO
Action if signal incorrect
Replace Transmitter Processor
board 501
The channel frequency of the Transmitter
50 kHz
300 Hz
300 Hz
+10 dBm
Chapter 8 - RF Bench Repair