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COM-120B
IFR COM-120B Service Manual
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STEP
PROCEDURE
14.
Press
ENTER
Key
to
access
Password
Field.
Press
SHIFT,
F,
M,
Y,
S,
V,
C,
D
and
SHIFT
Data
Entry
Keys
(5).
Press
ENTER
Key.
15.
Select
"13.
AM
MODULATION
METER"
to
access
AM
MODULATION
METER
CALIBRATION
Screen.
16.
Enter
Modulation
Analyzer
Reading
in
Data
Field
using
DATA
ENTRY
Keys
(5).
17.
Press
ENTER
Key
and
wait
until
Field
displays
CALIBRATED.
18.
Press
RETURN
Soft
Function
Key
F6.
Go
to
Step
2.
1-44
STEP
PROCEDURE
14.
Press
ENTER
Key
to
access
Password
Field.
Press
SHIFT,
F,
M,
Y,
S,
V,
C,
D
and
SHIFT
Data
Entry
Keys
(5).
Press
ENTER
Key.
15.
Select
"13.
AM
MODULATION
METER"
to
access
AM
MODULATION
METER
CALIBRATION
Screen.
16.
Enter
Modulation
Analyzer
Reading
in
Data
Field
using
DATA
ENTRY
Keys
(5).
17.
Press
ENTER
Key
and
wait
until
Field
displays
CALIBRATED.
18.
Press
RETURN
Soft
Fu
nction
Key
F6.
Go
to
Step
2.
1-44
Scans by ArtekMedia © 2008
47
49
Table of Contents
Section 1
4
Table of Contents
4
Calibration
5
Section 1 - Calibration Section
5
Calibration Adjustments
6
Calibration Record
6
Controls, Connectors and Indicators
6
Completion of Calibration Test Procedures
6
Disassembly Requirements Disassemblyrequirements
6
Test Equipment
6
Test Equipment Requirements
6
Esd Precautions
6
Section 2
13
DVM" on Meters Menu
14
Select "3. DVM" on Meters Menu
14
Generator Output Level Calibration
15
Distortion Meter Calibration Distortionmetercalibration
18
Press MTRS Instruments Key (4). Press MTRS Instruments Key
19
Set Average to off
19
Set Peak Hold to
19
Set Average to off
20
Set Peak Hold to off
20
Sinad Meter Calibration
20
Rf Generate Pm Deviation Calibration
25
Rf Generate External Modulation Calibration
29
Khz Khz
31
Vrms Vrms
31
1-8-11 Spectrum Analyzer Calibration
33
Mixer Null Calibration
40
Fm Deviation Meter Calibration
42
Range Range
43
Pm Deviation Meter Calibration
45
Range Range
45
Am Modulation Meter Calibration
47
Power Meter Calibration
49
VDC
52
VDC VDC
52
Vrms
52
Assembly
56
Diagram
112
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IFR COM-120B Specifications
General
Brand
IFR
Model
COM-120B
Category
Measuring Instruments
Language
English
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