TB 9-4931-488-24
Figure 4. Doubler Gain - Adjustment Setup.
NOTE
REDUCE PEAK POWER annunciator should be off in
techniques (36) and (37) below.
(36) While observing oscilloscope display, slowly vary TI frequency from 512 to
1024 MHz. Readjust A26A1C9 (fig. 3) for a stable square wave indication on oscilloscope
display.
(37) Repeat technique of (23) through (36) above until no further adjustment
is necessary.
(38) Repeat paragraph 11 a above.
12. Output Level and Meter Accuracy (Models Containing Option 004)
a. Performance Check
(1) Connect measuring receiver to RF OUTPUT.
(2) Position controls as listed in (a) through (c) below:
(a) RANGE MHz switch to 512 - 256.
(b) OUTPUT LEVEL 10 dB switch to +16 dBm.
(c) OUTPUT LEVEL 1 dB switch to 0 dBm.
(3) Adjust FREQUENCY TUNE control for a 512
MHz
indication
on
FREQUENCY MHz display, and press LOCK ON pushbutton.
(4) Set RF OFF/ON switch to ON.