Calibration; Calibration Interval; Tektronix Field Service; Using This Procedure - Tektronix 7B92 Instruction Manual

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Section 4-7892 Service
CALIBRATION
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Calibration Interval
To assure instrument accuracy, check the calibration of
the 7B92 every 1000 hours of operation, or every six
months if used infrequently. Before complete calibration,
thoroughly clean and inspect this instrument as outlined in
the Maintenance section.
Tektronix Field Service
Tektronix, Inc. provides complete instrument repair and
recalibration at local Field Service Centers and the Factory
Service Center. Contact your local Tektronix Field Office
or representative for further information.
Using This Procedure
General. This section provides several features to facili-
tate calibration of the 7B92. These are:
Index. An index is given preceding the calibration
procedure to aid in locating steps.
Performance Check. The performance of this instru-
ment can be checked by performing only the
.J
CHECK
steps. The
.J
preceding a step indicates that performing this
step checks the instrument against the tolerances listed as a
Performance Requirement (see Specification section in
Operators manual). Limits and tolerances given in other
check steps are calibration guides and should not be
interpreted as instrument specifications. Operator front-
panel adjustments are adjusted as part of the Performance
Check procedure.
Partial Calibration. A partial calibration is often
desirable after replacing components, or to touch up the
adjustment of a portion of the instrument between major
recalibrations. To calibrate only part of the instrument, set
the controls as given under Preliminary Control Settings
and start with the nearest Equipment Required list pre-
ceding the desired portion. To prevent unnecessary re-
calibration of other parts of the instrument, readjust only if
the tolerance given in the CHECK- part of the step is not
met. If readjustment is necessary, also check the calibration
of any steps listed in the INTERACTION or CALIBRA-
TION part of the step.
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Scans by OutsOllrce-Qptlons =>
Complete Calibration Procedure. Completion of each
step in the complete Calibration procedure ensures that this
instrument is correctly adjusted and performing within all
given tolerances.
NOTE
All waveforms shown in this section were taken with
a Tektronix oscilloscope camera system, unless other-
wise stated.
TEST EQUIPMENT REQUIRED
General
The following test equipment and accessories, or its
equivalent, is required for complete calibration of the
7B92. Specifications given for the test equipment are the
minimum necessary for accurate calibration. Therefore, the
specifications of any test equipment used must meet or
exceed the listed specifications. All test equipment is
assumed to be correctly calibrated and operating within the
listed specifications. Detailed operating instructions for the
test equipment are not given in this procedure. Refer to the
instruction manual for the test equipment if more informa-
tion is needed.
Special Calibration Fixtures
Special Tektronix calibration fixtures are used in this
procedure only where they facilitate instrument calibration.
These special calibration fixtures are available from
Tektronix, Inc. Order by part number through your local
Tektronix Field Office or representative.
Calibration Equipment Alternatives
All of the listed test equipment, or its equivalent, is
required to completely check and adjust this instrument.
The Calibration procedure is based on the first item of
equipment given as an example of applicable equipment.
When other equipment is substituted, control settings or
calibration setup may need to be altered slightly to meet
the requirements of the substitute equipment. If the exact
item of test equipment is not available, first check the
Specifications column carefully to see if any other equip-
ment is available which might suffice.
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