TM9-4935-294-15/2
detector in its place. Connect
Defect within rf head.
Refer to section III of this
output of crystal detector to
chapter.
CH 1 connector on oscilloscope.
Connect SWP OUT connector
to EXT HORIZ IN connector
on oscilloscope. Set MODE
selector to A F. Set SWEEP
RATE control for a stable dis-
play on oscilloscope. Adjus t
A F % control back and
forth through its entire range
and verify that the frequency
response presentation on oscil-
loscope expands and contracts.
10
Set .MODEselector to INT
Oscilloscope frequency response
Defect within BWO power supply.
Refer to BWO power supply-
SWEEP and adjust SWEEP
display expands and contracts.
manual.
RATE controls for a stable
display on oscilloscope. Adjust
Defect within rf head.
Refer to section III of this
SWEEP WIDTH control back
chapter.
and forth through its entire
range and verify that the free-
Quincy response presentation
on oscilloscope expands and
contracts.
11
Set MODEselector to EXT
Center portion of frequency re-
Defect within BWO power supply.
Refer to BWO power supply -
SWEEP, connnect external
sponse presentation on oscillo-
manual.
sweep source to EXT SWP
scope expands as external sweep
connector, and adjust output
signal amplitude is decreased.
Defect within external sweep
Troubleshoot external
to approximately -3 volts
source.
source.
peak. Decrease amplitude of
external sweep signal and ob-
serve expansion of center por-
tion of frequency response pre-
sentation on oscilloscope.
12
Set MODE selector to CW and
Square wave modulated signal dis-
Defect within BWO power supply.
Refer to BWO power supply -
SQUARE WAVE selector to
play on oscilloscope.
manual.
ON. Adjust SQUARE WAVE
FREQ control to desired mod-
ulation frequency. Adjust os-
cilloscope for a stable dis play
of the square wave modulated
signal.
13
Perform this step only when op-
Pulse or square wave modulated
Defect within PIN modulator.
Refer to PIN modulator
erating in the frequency range
signal displayed on oscilloscope.
manual.
between 1.8 and 12.4 GHz. Set
Defect within modulator.
Refer to modulator manual.
SQUARE WAVE selector to
3-31
