TM9-4935-294-15/2
Table 3-10. Operational Check and Troubleshooting Chart of Signal Source Leveling Setup
Step
Procedure
Normal indication
Possible cause of malfunction
Corrective measure
1
Set AC POWER switch to ON.
AC POWER and LINE indicators
Defect within BWO power supply.
Refer to BWO power supply-
light.
manual.
Refer to tunable synchronizer
nizer
manual.
Rf head not properly seated.
Remove and reseat rf head.
2
Allow approx. 2 minutes for
HI VOLT indicator lights.
Defect within BWO power supply.
Refer to BWO power supply
equipment to warm up and sta-
manual.
bilize;then set HI VOLT
switch to ON.
3
Signal source output, as indicated
Defect within BWO power supply.
Refer to BWO power supply
on power meter,is in accordance
manual.
Operate power meter (refer to
with information in table cited.
paragraph on operating proce-
Defect within power meter.
Refer to power meter manual.
dure for power meter in chap-
Improper or poor connection in
Locate and correct poor or im-
ter 2, section II, of TM
test setup.
proper connection.
9-4931-294-15/1) and monitor
signal source as follows:
Defect within rf head.
Refer to section III of this
(a) For frequencies below
chapter.
12.4 GHz, remove tunable
synchronizer cable connec-
tor from PHASE LOCK
output on rf head and
connect power meter-ther-
mistor mount combination
to PHASE LOCK connec-
tor.Rotate RF LEVEL
LEVEL ADJ control cw
to obtain signal source
output given in table list-
ing signal source rf out-
put levels in chapter 2,
section II, of TM
9-4931-294-15/1.
(b) For frequencies above
12.4 GHz, connect power
meter thermistor mount to
auxiliary arm of second
directional coupler. Rotate
RF LEVEL-LEVEL ADJ
control cw to obtain signal
source output given in
3-28