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IFR COM-120B Service Manual

IFR COM-120B
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SECTION 1
.
CALIBRATION
1
.1
G
EN ERAL
This
section contains
calibration
procedures
for
the following
assemblies and systems:
PARA
TITLE
PAGE
1-8-1
1-8-2
1-8-3
1-B-4
1-8-5
1-8-6
1-8-7
1-8-8
1-8-9
1-8-10
1-8-1 1
1-8-12
1-8-13
1-8-14
1-8-15
1-8-16
These
POWER
SUPPLY CALIBRATlON
TCXO/OCXO
CALIBRATION
DVM
CALIBRATION
GENERATOR
OUTPUT
LEVEL
CALIBRATION
DISTORTION METER
CALlBRATION
SINAD
METER
CALIBRATION
RF
GENERATE FM DEVIATION
CALIBRAT]ON
RF
GENERATE
PM
DEVIATION
CALIBRAT]ON
RF
GENERATE AM MODULATION
CALIBRATION
RF
GENERATE EXTERNAL MODULATION
CALIBRATION
SPECTRUM
ANALYZER
CALIBRATION
MIXER NULL
CALIBRATION
FM DEVIATION
METER
CALIBRATION
PM
DEVIATION
METER
CALIBRATION
AM MODULATION
METER
CALIBRATION
POWER METER
CALIBRATION
1-5
1-7
1-9
1-1 1
1-14
1-16
1-18
1-21
1-23
1-25
1-29
1-36
1-38
1-41
1-43
1-45
procedures
should be
performed
as a
result
of one or
more
of the
following
conditions:
O
lf,
during the
course of
normal
operation, the COM-1208 or any major
function
thereof
fails
to
meet
the
performance
specifications.
O
lf
a
module
is found
to be defective and
requires replacement.
O
lf
the
recommended
12
month calibration
interval is
due.
Figure 1-1 lists
the calibration
procedures
required
based on the
replacement
of a specific
module.
All
procedures
must
be
performed
for
the annual calibration.
1-1-1
SAFETY PRECAUTIONS
As with
any
piece
of
electronic equipment, extreme
caution
should
be
taken when working with
'live"
circuits.
When
performing
the calibration
procedures
in
this
section, be
sure to observe
the
f
ollowing
precautions:
WARNING:
REMOVE
ALL
JEWELRY
BEFORE PERFORMING ANY
CALIBRATION
PROCEDURES
INVOLVING LIVE
CIRCUITS.
HEED ALL WARNINGS
AND
CAUTIONS CONCERNING
MAXIMUM VOLTAGES
AND POWER
INPUTS.
1-1
SECTION
1 -
CALIBRATION
1-1
GENERAL
This
section
contains
calibration
procedures
for
the
following
assemblies
and
systems:
PARA
1-8-1
1-8-2
1-8-3
1-8-4
1-8-5
1-8-6
1-8-7
1-8-8
1-8-9
1-8-10
1
-8-11
1-8-12
1-8-13
1-8-14
1-8-15
1-8-16
TITLE
POWER
SUPPLY
CALIBRATION
TCXOIOCXO
CALIBRATION
DVM
CALIBRATION
GENERATOR
OUTPUT
LEVEL
CALIBRATION
DISTORTION
METER
CALIBRATION
SINAD
METER
CALIBRATION
RF
GENERATE
FM
DEVIATION
CALIBRATION
RF
GENERATE
PM
DEVIATION
CALIBRATION
RF
GENERATE
AM
MODULATION
CALIBRATION
RF
GENERATE
EXTERNAL
MODULATION
CALIBRATION
SPECTRUM
ANALYZER
CALIBRATION
MIXER
NULL
CALIBRATION
FM
DEVIATION
METER
CALIBRATION
PM
DEVIATION
METER
CALIBRATION
AM
MODULATION
METER
CALIBRATION
POWER
METER
CALIBRATION
PAGE
1-5
1-7
1-9
1 -11
1-14
1-16
1-18
1-21
1-23
1-25
1-29
1-36
1-38
1-41
1-43
1-45
These
procedures
should
be
performed
as
a
result
of
one
or
more
of
the
following
conditions:
If,
during
the
course
of
normal
operation,
the
COM-120B
or
any
major
function
thereof
fails
to
meet
the
performance
specifications.
If
a
module
is
found
to
be
defective
and
requires
replacement.
If
the
recommended
12
month
calibration
interval
is
due.
Figure
1-1
lists
the
calibration
procedures
required
based
on
the
replacement
of
a
specific
module.
All
procedures
must
be
performed
for
the
annual
calibration.
1 -1 -1
SAFETY
PRECAUTIONS
As
with
any
piece
of
electronic
equipment,
extreme
caution
should
be
taken
when
working
with
"live"
circuits.
When
performing
the
calibration
procedures
in
this
section,
be
sure
to
observe
the
following
precautions:
WARNING:
REMOVE
ALL
JEWELRY
BEFORE
PERFORMING
ANY
CALIBRATION
PROCEDURES
INVOLVING
LIVE
CIRCUITS.
HEED
ALL
WARNINGS
AND
CAUTIONS
CONCERNING
MAXIMUM
VOLTAGES
AND
POWER
INPUTS.
1
-1

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IFR COM-120B Specifications

General IconGeneral
BrandIFR
ModelCOM-120B
CategoryMeasuring Instruments
LanguageEnglish

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