INSTALLATION
2-12
Test No. 15
FM deviation. 50 kHz
This test checks the signal generator FM deviation against the modulation meter reading.
Related set-ups. Frequency 10 MHz, level −26 dBm, IF bandwidth 300 kHz, audio bandwidth
0.3 to 3.4 kHz, FM demodulation.
The functions verified by the above tests are:
Signal generator FM accuracy, modulation meter FM accuracy, modulation generator (audio
generator) level accuracy
Test No. 16
Modulation frequency. 1 kHz.
This test checks the modulation generator output frequency against the audio counter reading.
Related set-ups. Related set-ups. Frequency 10 MHz, level −26 dBm, IF bandwidth 300 kHz,
audio bandwidth 0.3 to 3.4 kHz, FM demodulation.
The functions verified by the above tests are:-
modulation generator (audio generator) frequency accuracy
Test No. 17
AM Depth. 50%
This test checks the signal generator AM against the modulation meter reading.
Related set-ups. Frequency 10 MHz, level −26 dBm, IF bandwidth 0.3 to 3.4 kHz, AM
demodulation.
The functions verified by the above tests are:
Signal generator AM accuracy, modulation meter AM accuracy, audio generator frequency
accuracy, audio generator level accuracy, audio filters, audio counter.
Using the Service Monitor
The monitor can be used as a bench instrument, either flat standing or inclined using the elevating
front feet.The monitor can also be used as a field service instrument while left in the operational
case. It can be operated in any position convenient to the operator. See the
Caution under
Ventilation, earlier in this chapter.
Note: if the Service Monitor is supplied with the non-operational soft carrying case that has no
verntilation apertures, then the Service Monitor must be removed from the case before operating.
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