TM 11-5821-333-30
4-11. OPERATIONAL CHECK. Continued
ACTION
RESPONSE
Step 3. PT DATA TEST
a. Set test adapter:
PTT (S8)
S5,
S6
PTT(S13)
b. Listen to headset for tones.
c. Check lamps on test adapter.
a. No response,
OFF
3
REF
d. Set test adapter:
PTT(S13)
OFF
S5,
S6
4
PTT(S13)
UUT
e. Check LAMP 3 on test adapter.
Step 4. CT VOICE TEST
a.
b.
c.
d.
e.
Set test adapter:
PTT(S13)
OFF
CAL
IN
Use scope channel 2 to set function genera-
tor for 10 V peak-to-peak square wave going
from -5 ± 0.5 V dc to +5 ± 0.5 V dc.
Use frequency counter to set function gener-
ator to 16 kHz ± 0.1 kHz.
Set test adapter:
CAL
OUT
S5,
S6
5
PT/CT
OFF
SQ/CLK
ON
PTT(S8)
UUT
Talk into headset, Listen to audio and check
lamps on test adapter,
b. Tones present.
If not, go to chart 5.
c. Lamps are as follows:
LAMP 2
on
LAMP 3
on
LAMP 5
off
If not, go to chart 5.
d. Tones present. If not, go to chart 6.
e. LAMP 3 is on. If not, go to chart 6.
a.
No response.
b. No response.
c. No response,
d. No response.
e. Voice is clear and intelligible. Lamps are as
follows:
LAMP 2
on
LAMP 5
on
If not, go to chart 7.
4-10
