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TM 11-5820-890-30-5
2-29. OPERATIONAL CHECK. Continued
Step 13. TRANSMIT CHECK (SC, 16K DATA, CT).
Action
a.
b.
c.
d.
Set FCTN GEN TRIGGER: CONT
CAL:
MOD GEN
FREQ: 16000 Hz (15990 to 16010 Hz)
LEVEL: 10 V p-p (9.5 to 10.5 V p-p)
FUNCTION:
TRIGGER:
TRIG LEVEL:
CAL:
Set MOD GEN:
RESPONSE:
LOGIC:
SQUARE
EXT
MID-RANGE
OFF.
ON
10
2.
Set REF RT and UUT RT: DATA: 16K.
Set STIM SEL:
FCTN GEN.
Set PTT: UUT.
Set PTT: OFF.
Step 14. RECEIVE CHECK (SC, 4.8K DATA).
Action
a.
Set LOGIC:
OFF
MOD GEN:
OFF.
b. Set CAL: FCTN GEN: TRIGGER: CONT
FREQ: 2400 Hz (2390 to 2410 Hz)
LEVEL: 10 V p-p (9.5 to 10.5 V p-p)
FUNCTION :
SQUARE
TRIGGER:
EXT
TRIG LEVEL: MID-RANGE.
Set CAL:
OFF.
c. Set BASEBAND: 2
STIMULUS: 4
RESPONSE: 1.
Set REF RT and UUT RT: DATA: 4.8K.
d. Set PTT: REF.
e. Set RESPONSE: 2.
Set PTT: REF.
Response
a.
b.
c.
d.
No response.
No response.
Scope than A displays a 9 to 11 V p-p,
2390 to 2410 Hz square wave. If not,
go to chart 28.
No response.
Response
a.
b.
c.
d.
e.
No response.
No response.
No response.
Scope chan A displays a 9 to 11 V p-p,
2390 to 2410 Hz square wave. If not,
go to chart 29.
Scope chan A displays a 9 to 11 V p-p,
4790 to 4810 Hz square wave. If not,
go to chart 30.
2-41
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