Tektronix 2213, Инструкция по эксплуатации

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Section 4 —2213 Service
PERFORMANCE CHECK PROCEDURE
INTRODUCTION
PURPOSE
The "Performance Check Procedure" is used to verify
the instrument's Performance Requirements as listed in
the "S pecification" (Section 1) and to determine the need
fo r readjustment. These checks may also be used as an
acceptance test, as a preliminary troubleshooting aid, and
as a check o f the instrument after repair. Removing the
instrument's cover is not necessary to preform this pro­
cedure. A ll checks are made using the operator-accessible
front- and rear-panel controls and connectors.
To ensure instrument accuracy, its performance should
be checked after every 2000 hours o f operation or once
each year, if used infrequently.
TEST EQUIPMENT REQUIRED
The test equipment listed in Table 4-1 is a complete
list o f the equipment required to accomplish both tne
"Performance Check Procedure" in this section and the
"Adjustm ent Procedure" in Section 5. Test equipment
specifications described in Table 4-1 are the minimum
necessary to provide accurate results. Therefore, equipment
used must meet or exceed the listed specifications. Detailed
operating instructions fo r test equipment are not given in
this procedure. If more operating information is required,
refer to the appropriate test-equipment instruction manual.
When equipment other than that recommended is used,
control settings o f the test setup may need to be altered.
If the exact item of equipment given as an example in
Table 4-1 is not available, first check the "Purpose" column
to verify use of this item. If it is used fo r a check that is
o f little or no importance to your measurement require­
ments, the item and corresponding steps may be deleted.
If the check is important, use the "M inim um Specification"
column carefully to determine if any other available test
equipment might suffice.
Special fixtures are used only where they sim plify the
test setup and procedure. These fixtures are available from
Tektronix, Inc. and can be ordered by part number through
your local Tektronix Field Office or representative.
LIMITS AND TOLERANCES
The tolerances given in this procedure are valid fo r an
instrument that is operating in and has been previously
calibrated in an ambient temperature between +20°C and
+30°C. The instrument also must have had as least a 20-
minute warm-up period. Refer to the "S pecification"
(Section 1) for tolerances applicable to an instrument
operating outside this temperature range. A ll tolerances
specified are fo r the instrument only and do not include
test-equipment error.
PREPARATION
Test equipment items 1 through 9 in Table 4-1 are
required to accomplish a complete Performance Check. A t
the beginning o f each subsection, in both the "Performance
Check Procedure" and the "A djustm ent Procedure"
sections, there is an equipment-required list showing only
the test equipment necessary fo r performing the steps in
that subsection. In this list, the item number that follows
each piece o f equipment corresponds to the item number
listed in Table 4-1.
This procedure is structured in subsections, which can
be performed independently, to perm it checking individual
portions o f the instrum ent A t the beginning o f each
subsection is a list o f all the front-panel control settings
required to prepare the instrument fo r performing Step 1
in that subsection. Each succeeding step w ith in a particular
subsection should then be performed, both in the sequence
presented and in its entirety, to ensure that control-setting
changes w ill be correct fo r ensuing steps.
4-1