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Page Title:
Organizational Quarterly Preventive Maintenance Checks and Services Chart Sequence |
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 TM 11-6625-922-15
Sequence
No.
Item to be inspects
Procedure
References
to 600.
to 600.
f. RECEIVE LEVEL DBM switch to 0.
g. TRANSMIT LEVEL DBM switch
to 0.
h. TRANSMIT LEVEL DBM control
fully cw.
i. TRANSMIT FREQUENCY switch
to TRANSMIT FREQUENCY.
j. SWEEP-CARRIER-REFERENCE
switch to CARRIER.
k. % MOD-RECEIVE LEVEL-
TRANSMIT LEVEL switch to
% MOD.
l. MODULATION FREQUENCY
HZ switch to 25.
m. Operate % MOD ADJ control to
obtain reading of 50 percent on
dbm/% MODULATION meter.
n. % MOD-RECEIVE LEVEL-
TRANSMIT LEVEL switch to
TRANSMIT LEVEL.
o. dbm/%, MODULATION meter
should read 0 dbm 0.5 dbm.
p. RANGE (KHZ) switch to 50-600.
q. Operate CARRIER FREQUENCY
control to obtain reading of 50000
on FREQUENCY display
(5,000 Hz).
r. RANGE (KHZ) switch to .1-50.
05000 (5 KHz).
t. SWEEP-CARRIER-REFERENCE
switch to SWEEP.
u. SWEEP CALIBRATE switch to
LOW CAL.
v. SWEEP TIME fully cw.
w. Operate CARRIER FREQUENCY
control to obtain 10000 on FRE-
QUENCY display.
x. SWEEP CALIBRATE to HIGH
CAL.
y. Operate the SWEEP WIDTH con-
trol to obtain reading of 20000
on FREQUENCY display.
z. SWEEP CALIBRATE to SWEEP.
slowly vary up and down between
10000 and 20000.
ab. SWEEP-CARRIER-REFERENCE
switch to CARRIER.
ac. Connect BAL TRANSMIT jack to
BAL RECEIVE jack using short
cable with telephone plugs (TIP/
RING).
ad. dbm/% MODULATION meter
should read 0 dbm 0.5 dbm.
ae. Note reading of FREQUENCY
display. Operate TRANSMIT
FREQUENCY-RECEIVE FRE-
QUENCY switch to RECEIVE
FREQUENCY. FREQUENCY
display reading should be the
same as noted.
4-3
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