TM 11-5821-333-30
2-23. OPERATIONAL CHECK. Continued
ACTION
RESPONSE
Step 17. RETRANSMIT CHECKS. Continued
f.
Use scope channel 2 and frequency counter
to set function generator:
Function
square wave
Frequency
1.0 kHz ± 100Hz
Amplitude
1 0 ± 1 V
peak-to-peak
g. Set PTT (S8) on test adapter to UUT and
check scope channel 1.
h. Set test adapter switches:
PTT (S8)
OFF
S2
6
TEST EQUIPMENT
SELECTOR
SCOPE
i.
Set function generator attenuation to 40 dB.
j.
Hold PTT (S8) on test adapter in REF position,
speak into headset, and check scope chan-
nel.
k, Hold PTT (S8) on test adapter in REF position,
speak into headset, and check LAMP 6 on
test adapter.
1.
Set rf signal generator:
Frequency
30 MHz
FM mode
EXT AC
Level
-70 dBm
m. Set test adapter switches:
CAL
IN
S2
7
n. Use scope channel 2 and frequency counter
to set function generator:
Function
square wave
Frequency
2 kHz±1Hz
Level
to cause 6.5
kHz deviation
f.
No response.
g. Scope displays 6 to 10 v peak-to-peak
square wave. If not, go to chart 32.
h. No response.
i.
No response.
j.
Scope displays greater than 500 mV peak-
to-peak audio. If not, go to chart 33.
k. LAMP 6 is lit. If not, go to chart 34.
e.
No response.
m. No response.
n. No response.
2-33
