TB 9-6625-096-50
(c) AUDIO SELECTOR switch to 1,000 ∼.
NOTE
Frequency counter (A3) must be slightly tuned off zero beat to
obtain the proper oscilloscope (A4) display.
(3) Adjust oscilloscope controls as necessary. Oscilloscope display will be as shown
in figure 5. If not, perform b below.
Figure 5. Test instrument - 30-percent modulation waveform.
(4) Turn AUDIO SELECTOR switch to 30 ∼,
(5) Repeat (3) above.
(6) Turn AUDIO SELECTOR switch to 9960 FM.
(7) Repeat (3) above.
NOTE
150 Hz modulation will be checked during the performance of
paragraph 13 below.
required waveforms.
13. Tone Localizer Centering
a. Performance Check
(1) Connect AUDIO OUT connector of TI to true rms voltmeter (A8) using cable
(B8) and adapter (B1).
(2) Position controls of TI as indicated in (a) and (b) below:
(a) AUDIO SELECTOR- switch to 90 ∼.
(b) LOC-GS control fully counterclockwise.
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