TB 9-6625-2077-35
(f) TUNING FINE control to midrange.
(g) TUNING COARSE control cw less one-half turn.
(h) RF OUTPUT LEVEL control fully cw.
(3) Set audio analyzer controls to measure dc volts and connect audio analyzer
INPUT HIGH to
A5TP2 and
A5TP3 (common) (fig. 1).
(4) Adjust A5R5 (fig.1) for a -11.000 V dc indication on audio analyzer.
(5) Disconnect audio analyzer and set MODULATION switch to FM 150 Hz.
(6) Set audio analyzer controls to measure frequency and connect audio analyzer
INPUT HIGH to
A5TP4 and
A5TP3 (common) (fig. 1).
(7) Adjust A5R27 (fig. 1) for an indication of 150.000 Hz on audio analyzer (R).
(8) Set MODULATION switch to FM 400.00 Hz. Adjust A5R29 (fig. 1) for an
indication of 400.00 Hz on audio analyzer (R).
(9) Set MODULATION switch to FM 1 KHz.
indication of 1000.00 Hz on audio analyzer (R).
(10) Set audio analyzer controls to measure distortion.
NOTE
Do not adjust A5R33 (fig. 1) to full cw position. This action will
cause the output of the internal oscillator to become zero volts.
(11) Alternately adjust A5R33 and A5R34 (fig. 1) for minimum distortion, less than 1
percent (R).
(12) Disconnect the audio analyzer from equipment setup.
(13) Set MODULATION switch to FM EXT and adjust A5R39 (fig. 1) for a 0
indication on TI MODULATION meter (R).
(14) Set MODULATION switch to FM 1 kHz.
(15) Connect RF OUTPUT to measuring receiver power sensor.
(16) Set measuring receiver to measure FM.
(17) Adjust MODULATION LEVEL control for an indication of 10 kHz peak
deviation on measuring receiver.
(18) Adjust A5R26 (fig. 1) for an indication of 10 kHz on MODULATION meter (R).
(19) Set FM METER RANGE switch to 75 kHz.
(20) Adjust MODULATION LEVEL control for an indication of 75 kHz peak
deviation on measuring receiver.
(21) Adjust A5R23 (fig. 1) for an indication of 75 kHz on TI MODULATION meter (R).
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