TM 11-5820-890-30-4
12-23. OPERATIONAL CHECK. Continued
Step 12. RF OUTPUT TEST.
SET:
RCU:
TEST ADAPTER:
MODE: SC
TEST EQPT
SELECTOR: HANDSET
RF SWITCH: 1
STIMULUS: 1
STIM SEL: HANDSET
Action
Response
a. Set test adapter:
a. DMM reading is -7 to +1 dBm. If not, the
PIT: UUT.
control module (19A2) is bad.
Read DMM.
b. Set RCU:
b. DMM reading is 20 to 25 dBm. If not, go
RF PWR: M.
to chart 39.
Read DMM.
c. Set RCU:
c. DMM reading is 36 to 39 d8m. If not, go
RF PWR: HI.
to chart 39.
Read DMM.
d. Press handset PTT switch, talk, and listen.
d. Sidetone is heard in handset. If not, go to
chart 40.
e. Disconnect W1 cable from test adapter
e. Sidetone is NOT heard in handset. If
UUT ANT connector. Press handset PTT
sidetone is heard, go to chart 41.
switch, talk, and listen.
f. Reconnect WI cable to test adapter UUT
f. DMM reading is 35 to 39 dBm. If not, go
ANT connector. Set RCU:
to chart 39.
RF PWR: PA.
Read DMM.
g. Set RCU:
g. DMM reads no power out. If not, go to
FCTN: RXMT.
chart 42.
12-41
