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COM-120B
IFR COM-120B Service Manual
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p
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•
1
COAX
DEFINITION
TABLE
2
COAX
I
FUNCTION
SIGNAL
fREOUENCY
SIGNAl
LEVEL
COAX
I
fUNCTIo.~
SIGNAl
fREQUENCY
SIGNAL
LEVEL
T
/R
TO
POWER
TERUN
WI
I/O
CONNEcnON
0.25UHz
TO
l000uHz
-1J7dBm
TO
-2OdBm
~SlGNAl
OUT)
fiRST
LO
FROM
GENERATOR
-JOdBm
TO
+SJdBm
SIGNAl
IN)
Wl9
TRAY
TO
GEM
CONVERTER
lJOOUHz
TO
2298MHz
+5d8rn
TO
+10d8m
W2
POWER
TERIIN
TO
AUX
0.2SUHz
TO
l000uHz
OUTPUT
SIGNAl.
-137dBm
TO
+13dBm
(SIGNAl
OUT)
W20
IOMHz
REF
FROM
REF
FREO
TO
GENERATOR
TRAY
1011Hz
+7dBm
TO
+13dBm
W3
f~ONT
PANEL
ANT
0.2SUHz
TO
l000MHz
-1J7dBm
TO
0dBm
(NOMINAl
INPUT
SIGNAl)
CONNECTOR
TO
RECEIIlER
+4OdBm
(IIAX
LEIIEL)
W21
SWEEP
OSC
FROM
ANAl.
YZER
121.3UHz
iO
123.3UHz
CENTER
TO
GENERATOR
TRAY
FREO.
UP
TO
:t611Hz
SWEEP
-8dBm
:t5dB
W4
MONITOR
CABLE-CRrJSS
fEED
0.2SUHz
TO
l000uHz
FROM
POWER
TERIIN
TO
RECEIVER
-137dBm
TO
-7dBm
W22
SCOPE/DW
CONNECTION
FROM
fRON
T
PANEl.
DC
TO
201cHz
UP
TO
:l:4V
3
W5
RECEIVER
JUMPER
88MHz
ro
90MHz
+9d8
TO
+14dB
GAIN
(FROM
ANT
INPUT
WJ)
W23
111Hz
REF
FROII
REF
FREO
TO
ANAL
)LER
Il.IHz
J.OVpp
TO
5Vpp
7001cHz
FROM
RECEIVER
TO
RF
W6
ERROR
IIETER
ON
DIGITAl
TRAY
700kHz
0.4Vpp
INTO
IkO
LOAD
W24
ANALYZER
APP.
20dB
CAIN
JUt.lPER
CABLE
10.711Hz
(FROM
BB-9OMHz
INPUT
Wl)
Wl
RECEIVER
TO
ANAl.
VZER
88MHz
TO
90MHz
0dB
:t4dB
CAIN
(fROll
ANT
INPUT
W3)
W8
fiRST
LO
FROM
SVNlliESiZER
1300MHz
TO
229BMHz
W25
DVII
LEVOL
fROII
ANAL
Y2ER
DC
TO
20kHz
TRAY
TO
RECEIIlER
TRAY
+5dBm
TO
+10d9m
TO
BASEBAND
TRAY
UP
TO
±4V
•
W9
SECOND
LO
FROM
SYNTHESIZER
121011Hz
W26
IMHz
REf
FROM
REf
Il.IHz
TRAY
TO
RECEIVER
TRAY
+5GBm
TO
+10dBm
FREO
TO
BASEBAND
TRAY
3.0Vpp
TO
5Vpp
1011Hz
REf
FROM
REf
POWER
LEIlEL
FROM
POWER
WlO
FREO
TO
RECEIIlER
1011Hz
+7dBm
TO
+13d8m
W27
TERt.lN
TO
BASEBAND
"!RAY
DC
o
TO
+4.0VDC
NOMINAl
4
Wll
THIRD
LO
FROM
SYNTHESIZER
n.3UHz
TO
79.3MHz
W28
IMHz
REfERENCE
TO
111Hz
TRAY
TO
RECEIVER
TRAY
+5dBm
TO
+
1000m
DIGITAL
TRAY
3.0Vpp
TO
5.0Vpp
Wl2
11011Hz
REF
FROM
REF
FREO
110
MHz
W29
EXTERNAL
1011Hz
fROM
10MHz
TO
SVNTHESlZER
TRAY
-5dBm
TO
+Jd8m
REAR
PANEL
TO
REF
FREO
+3dBm
TO
+10dBm
Wl3
1
CIIHz
REF
FROM
REF
W30
COAX
CABLE
FROM
CEN
0.25MHz
TO
l000uHz
FREO
TO
SVNlHESIZER
TRAY
10000Hz
+7dBm
TO
+13d8m
CONIlERTER
TO
CEN
OUTPUT
-40dB
:tldB
Wl4
10000Hz
REF
FROM
REF
FRO
1011Hz
W31
RF
OUTPUT
FROM
CEN
OUTPUT
0.25MHz
TO
looOt.lHz
TO
SYNTHESIZER
TRAY
+7dBm
TO
+13dBm
TO
A
TTENUA
TOR
-IOdBm
NOWNAL
Wl5
THIRD
LO
FROM
SVNTHESIZER
n.3IIHz
TO
79.3!AHz
W32
RF
OUTPUT
FROM
A
TTENUA
TOR
O.25MHz
TO
looOMHz
5
TRAY
TO
ANAl
VZER
+5dBm
TO
+9dBm
TO
POWER
TERM
-IOdBm
TO
-127dBm
Wl6
SECONO
LO
FROM
SYNTHESIZER
121011Hz
W33
OPTIONAL
JUIIPER
TO
RECEIIlER
10MHz
TRAY
TO
C£N
CONVERTER
-l4dBm
TO
-9dBm
TRAY
(SSB
OPTION)
1011Hz
REF
+7dBm
TO
+13dBm
Wl7
21.4MHz
FROM
SVNTHESIZER
21.4MHz
TO
21.4024MHz
W34
OPTIONAL
1011Hz
REF
FROM
10MHz
TRAY
TO
GEN
TRAY
INC.-100Hz
-4dBm
TO
+2dBm
10t.lHz
OVEN
TO
REF
FREO
+7dBm
:t2dB
WlB
BBMHz
FROII
GENERATOR
88MHz
TO
9011Hz
W35
OPTIONAL
INPUT
fROM
POM:R
0.25MHz
TO
1000llHz
TRAY
TO
GEN
CONVERTER
-13dBm
:tld8
TERMN
TO
AUX
AMP
-137d8m
TO
-13dBm
W36
OPTIONAL
OUTPUT
fROM
AUX
0.25MHz
TO
1000MHz
AMP
TO
FRONT
PANEL
-137d8m
TO
+13dBm
6
7
•
COM-1208
COt.tPQSITE
OOOO-C&42-500
REV
A
SHEET
6
OF
6
Scans by ArtekMedia © 2008
65
67
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
Other manuals for IFR COM-120B
Evaluation Guide
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IFR COM-120B Specifications
General
Brand
IFR
Model
COM-120B
Category
Measuring Instruments
Language
English
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