Crown Low Power Transmitters - Crown Broadcast
Crown Low Power Transmitters - Crown Broadcast
Crown Low Power Transmitters - Crown Broadcast
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Using a Modulation Monitor<br />
1. Set the Stereo-Mono switch to Mono.<br />
2. Check that the setting of the Modulation compensation control (see illustration<br />
2–6) on the RF Exciter circuit board, falls within the range specified for<br />
the frequency of operation. (See section 2.3.1.)<br />
3. Feed a sine wave signal of about 2.5 kHz into the left channel at a level<br />
sufficient to put the wideband gain-reduction indicator somewhere in the<br />
middle of its range.<br />
4. Set the Composite level control to produce 90% modulation as indicated on<br />
an FM monitor.<br />
5. Apply pink noise or program material to the audio inputs and confirm, on<br />
both Mono and Stereo, that modulation peaks are between 95% and 100%.<br />
Adjustments and Tests<br />
5–3