Tektronix T921 User Manual

WARNING
SERVICING INFORMATION IN THE FOLLOWING SECTIONS IS
INTENDED FOR
USE BY QUALIFIED SERVICE
PERSONNEL ONLY . T
O
AVOID ELECTRIC
SHOCK, DO NOTREMOVE
INSTRUMENT
COVERS
OR PERFORM ANY SER-
VICING UNLESS QUALIFIED TO DO SO .
IMPORTANT-PLEASE READ BEFORE USING THIS PROCEDURE
When done properly, this procedure allows you to adjust the instrument to its original performance
specifications . The
Adjustment Procedure is not intended as a troubleshooting guide . Any trouble you
find during the procedure should be
corrected before continuing . Refer
to
the Service Information section for further information .
LIMITS AND TOLERANCES
Limits
and tolerances
are instrument specifications
only if they are called out as performance requirements in
the Specification section . Tolerances given are for the
oscilloscope under test and do not include test equipment
error .
ADJUSTMENT INTERACTION
Some adjustments interact with others . These are
identified with an INTERACTION
step .
PARTIAL PROCEDURES
You can perform part of the adjustment procedure after
replacing components
or
just
to touch up
the
performance
between major re-adjustments . Do not change the setting
'Requires TM500 Series Power Module .
REV . A, JUNE 1976
ADJUSTMENTS
TABLE 4-1
Test
Equipment
Section 4-T921/T922/T922R
of the -8 V supply unless you intend to re-adjust the
entire
instrument .
To adjust
only part
of
the instrument, set the controls
according to the nearest preceding Control Settings and
use the test setup given in the step you intend to
perform
or the setup in a preceding step . To prevent
unnecessary
re-adjustment of other parts of the instrument, reset
an
adjustment only if the tolerance given
for
that
step is not
met . If it is necessary to reset
an adjustment, also check
any steps listed in the INTERACTION-- part of the step .
TEST EQUIPMENT
REQUIRED
The test equipment listed in Table 4-1, or equivalent is
required for complete calibration of the oscilloscope .
Specifications given for the equipment are the minimum
necessary for accurate calibration .
Examples of
Applicable
Description Minimum Specifications Usage
Test Equipment
1 . Digital Voltmeter Range, 0 to 9V dc
; Power supply adjustment . a . Tektronix DM 501
accuracy
within 0 .3% . Digital Multimeter .'
2 . Time-Mark Generator Markers, 0 .5 /is to 0 .5 s ; Y-axis alignment, geom- a . Tektronix TG 501
accuracy, within 0 .3% . etry adjustment, sweep Time-Mark Generator
.'
and timing adjustments .
b .
Tektronix 2901 Time-Mark
Generator .
3 . Amplitude Calibrator
Signal amplitude, 10 mV Vertical gain adjustment . a . Tektronix PG 506
to 50 V square wave ; Calibration Generator
.'
frequency, 1 kHz ; amplitude
accuracy, within 0 .3% .

Tektronix T921 Specifications

General

Brand	Tektronix
Model	T921
Category	Test Equipment
Language	English