IFR COM-120B

STEP
PROCEDU
RE
10.
Verify
COM-120B
Modulation
Reading
is
80%
(110%).
lf
not,
go
to Step
32.
11.
Set
EXT
Modulation Type
tor FM. Set
Modulation Analyzer
for FM
Measurement.
12. Set
Deviation
Range tor
NAR 1.
13. Adjust
Audio Analyzer
for Modulation
Analyzer
reading
of
16 kHz.
14.
Verify COM-1208
Modulation
Reading
is 16 kHz
(11.6
kHz).
lf not,
go
to
Step 32.
15.
Set
Deviation
Range tor NAH
2.
16. Adjust
Audio
Analyzer f
or
Modulation
Analyzer reading
of 8
kHz.
17. Verify COM-1208
Modulation
Reading
is
8
kHz
(t0.8
kHz). lf
not,
go
to
Step 32.
18. Set
Deviation
Range tor NAR 3.
19.
Adjust Audio
Analyzer for Modulation
Analyzer reading
of
1.55 kHz.
20. Verify COM-1208
Modulation
Reading
is 1.55 kHz
(t0.155
kHz).
lf not,
go
to Step 32.
21. Set
Deviation Range
for WIDE.
22. Adjust
Audio Analyzer
for Modulation
Analyzer reading
of
80
kHz.
23.
Verify COM-120B
Modulation
Reading
is
80
kHz (18
kHz).
lf not,
go
to Step 32.
24. Set
EXT
Modulation Type
tor PM.
Set
Modulation Analyzer
for PM
Measurement.
25. Set
Deviation
Range f
or
NAR
1.
26.
Verify
COM-1208
Modulation Reading
is 16 Radians
(i1.6
Radians).
lf not,
go
to Step
32.
27.
Set
Deviation
Range tor
NAR 2.
28.
Verify
COM-1208
Modulation Reading
is
8
Radians
(10.8
Radians).
lf not,
go
to Step
32.
29.
Set
Deviation Range
tor NAR
3.
30.
Verify
COM-120B
Modulation
Reading is 1.55 Radians
(10.155
Radians). lf not,
go
to
Step
32.
31. Set
COM-1208
power
to OFF
and disconnect test equipment.
PERFORM
THE FOLLOWING ONLY
WHEN REQUIRED.
32.
Press
SETUP
MEMORY Key
(21).
33. Select
"1.
Calibration"
f rom
Setup
Screen.
1-26
STEP
PROCEDURE
10. Verify COM-120B Modulation Reading is 80% (±10%). If not, go to Step 32.
11. Set EXT Modulation Type for FM. Set Modulation Analyzer for FM Measurement.
12. Set Deviation Range for NAR 1.
13. Adjust Audio Analyzer for Modulation Analyzer readi ng of 16 kHz.
14. Verify COM-120B Modulation Reading is 16 kHz (±1.6 kHz). If not, go to Step 32.
15. Set Deviation Range for NAR 2.
16. Adjust Audio Analyzer for Modulation Analyzer readi ng of 8 kHz.
17. Verify COM-120B Modulation Reading is 8 kHz (±O.8 kHz). If not, go to Step 32.
18. Set Deviation Range for NAR 3.
19. Adjust Audio Analyzer for Modulation Analyzer reading of 1.55 kHz.
20. Verify COM-120B Modulation Reading is 1.55 kHz (±O.155 kHz). If not, go to Step 32.
21. Set Deviation Range for WIDE.
22. Adjust Audio Analyzer for Modulation Analyzer reading of SO kHz.
23. Verify COM-120B Modulation Reading is 80 kHz (±8 kHz). If not, go to Step 32.
24. Set EXT Modulation Type for PM. Set Modulation Analyzer for PM Measurement.
25. Set Deviation Range for NAR 1.
26. Verify COM-120B Modulation Reading is 16 Radians (±1.6 Radians). If not, go to Step 32.
27. Set Deviation Range for NAR 2.
2S.
Verify COM-120B Modulation Reading is 8 Radians (±O.S Radians). If not, go to Step 32.
29. Set Deviation Range for NAR 3.
30. Verify COM-120B Modulation Reading is 1.55 Radians (±0.155 Radians). If not, go to Step
32.
31. Set COM-120B power to OFF and disconnect test equipment.
PERFORM THE FOLLOWING ONLY WHEN REQUIRED.
32. Press SETUP MEMORY Key (21).
33. Select "1. Calibration" from Setup Screen.
1-26
Scans by ArtekMedia © 2008