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Page Title:
ABNORMAL SCOPE PRESENTATION BUT NORMAL DISCRIMINATOR INDICATION ON TEST METER. |
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 TM 11-5805-387-34-2
MALFUNCTION/SYMPTOM
PROBABLE CAUSE
TEST PROCEDURE
INDICATION
YES
NO
3. Connect TS-799A/UGM-1 and test cable No. 3
Go to 4.
Replace
defective
points of receiver module A4 with the
module A4
AN/USM-207:
DISCR DRIVER 1 (MODE SELECTOR switch at
Space: 2,380 Hz
850 HZ)
Mark: 3,230 Hz
DISCR DRIVER 1 (MODE SELECTOR switch at
Space: 2,847.5 Hz 2
85 HZ DIVERSITY)
Mark: 2,762.5 Hz 2
DISCR DRIVER 2 (MODE SELECTOR switch at
Space:2,847.5 Hz 2
85 HZ or 85 HZ DIVERSITY)
Mark: 2,762.5 Hz 2
2,805 HZ NSK (MODE SELECTOR switch at
Space: 2,847.5 Hz 2
85 HZ, 85 HZ DIVERSITY, or 85 HZ + VOICE)
Mark:2,762.5.Hz2
DISCR AMPL (take reading between J3 and
Space: J3 higher
ground)
voltage than J2
DISCR AMPL (take reading between J2 and
Mark: J2 higher
ground)
voltage than J3
2-22
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