TB 9-6625-2059-24
(7) Decrease FREQUENCY MHz switches from 126 000 0 to 125 000 0 in
increments of 000 100 0. If signal strength does not move 1 major division per increment
within 2 minor divisions, perform b (9) and (10) below.
(8) Set ANALY DISPR control to OFF.
b. Adjustments
(1) Adjust HORIZ CTR A4A2R62 (fig. 6) until peak of signal is centered on
centerline.
(2) Adjust HORIZ GAIN A4A2R65 (fig. 6) until end of trace is aligned with right
edge of bezel.
(3) Repeat (1) and (2) above until no further adjustments are required.
(4) Adjust MAX DISP A4A1R40 (fig. 1) until signal strength peak is aligned with
first vertical graticule line.
(6) Adjust MAX DISP A4A1R40 (fig. 1) until signal strength peak is aligned with
11th vertical graticule line.
(7) Repeat a (3) and (4) above and if required, adjust MAX DISP A4A1R40 (fig. 1)
for best in-tolerance condition.
(8) Adjust MIN DISP A4A1R34 (fig. 1) until signal strength peak is aligned with
first vertical graticule line.
(9) Adjust MIN DISP A4A1R34 (fig. 1) until signal strength peak is aligned with
11th vertical graticule line.
(10) Repeat a (6) and (7) above and if required, adjust MIN DISP A4A1R34 (fig. 1) for
best in-tolerance compromise.
a. Performance Check
(1) Set DEV/PWR switch to WATTS X1 and GEN-RCVR switch to RCVR. If
DEVIATION (kHz) WATTS meter does not indicate 0, adjust A1A14R65 (fig. 1) for 0
indication on DEVIATION (kHz) WATTS meter.
(3) Energize all equipment and allow at least 15 minutes for warm-up.
(5) Adjust signal generator amplitude control and RF gain control on the RF power
amplifier for full-scale indication on DEVIATION (kHz) WATTS meter. If RF power
meter does not indicate 4 W 10 percent perform b (1) and (2) below.
(6) Adjust output power to 0 and set DEV/PWR switch to WATTS X10.