TM 11-5820-890-30-4
5-10. OPERATIONAL CHECK. Continued
Step 2. RF OUTPUT CHECK. Continued
Action
i. Connect equipment as shown on figure
5-4.
j. Set RT CHAN:
k. Press handset
l. Set RT CHAN:
m. Press handset
n.
o.
p.
q.
r.
s.
t.
Set RT CHAN:
Press handset
Decrease test
to 22.0 V dc.
Press handset
1.
PTT switch and read DMM.
2.
PTT switch and read DMM.
3.
PTT switch and read DMM.
power supply output voltage
PTT switch and read DMM.
Increase test power supply output voltage
to 31.0 V dc.
Press handset PTT switch and read DMM.
Decrease test power supply output voltage
to 27.5 V dc.
Step 3. RECEIVE PATH LOSS CHECK.
Response
i. No response.
j. No response.
k. DMM reading is 10 to 14 dB greater than
measurement, RT 1. If not, go to Chart 2.
l. No response.
m. DMM reading is 10 to
measurement RT 2. If
n. No response.
o. DMM reading is 10 to
measurement RT 3. If
p. No response.
14 dB greater than
not, go to chart 3.
14 dB greater than
not, go to chart 4.
q. DMM reading is 8 to 12 dB greater than
measurement RT 3. If not, the power
amplifier heat sink (6A3) is bad.
r. No response.
s. DMM reading is 10 to 14 dB greater than
measurement RT 3. If not, the power
amplifier heat sink (6A3) is bad.
t. No response.
Action
Response
a. Set RT RF: HI.
b. Press handset PTT switch and read DMM.
a. No response.
b. DMM reading is not more than 1.5 dB
below measurement RT 3. If it is, go to
chart 5.
5-9
