TM 11-6625-3053-14
STEP
OPERATION
NORMAL INDICATION
CORRECTIVE ACTION
Connect test set up as shown below.
Set signal generator initial settings of para 2-4, and FREQUENCY to 800 MHz.
Energize test oscillator, and scope, and sig gen if off.
Set MODULATION switch to EXT AM if sig gen was on, or wait 2 mins before doing so if just
energized. Set ALC to ON, and adjust ALC SET for monitor meter reading of -3.
Set scope vert sensitivity to .01V per cm. Adjust sweep to display 5 or 6 full cycles, and AT-
TENUATOR to display 6 boxes vertically.
Adjust ALC SET control to eliminate peak clipping on scope, and retouch ATTENUATOR control to
maintain the six cm vertical display.
The vertical display should be 3 cm high or more.
Troubleshooting item 17.
11
ON-OFF RATIO CHECK,
If you are continuing from previous step, set MODULATION switch to RF OFF. If you are performing
this as a separate test, start with sig gen POWER off.
Connect test set up as shown below, attaching thermistor mount to signal generator output and ext
power meter through its cable to the thermistor mount.
6-24