Performance Check/Calibration Page; Preliminary Information; Calibration Interval; Tektronix Field Service - Tektronix 7623A Instruction Manual

Section 5--7623A/R7623A Service
PERFORMANCE CHECK/CALIBRATION
PRELIMINARY INFORMATION
Calibration Interval
To ensure instrument accuracy, check the calibration of the 7623A 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
Index. To aid in locating a step in the Performance Check or Calibration procedures, an index
is given preceding Part |—Performance Check and Part I!—Calibration.
Performance Check. The performance of this instrument can be checked, without removing the
covers or making internal adjustments, by performing only Part t--Performance Check. This procedure checks
the instrument against the tolerances listed as a Performance Requirement in the Specification section.
Calibration Procedure. Completion of each step in Part |!—Calibration ensures that this
instrument is correctly adjusted and performing within all given tolerances. Where possible, instrument
performanceis checked before an adjustment is made.
Partial Procedures. A partial performance check or calibration is often desirable after replacing
components, or to touch up the adjustment of a portion of the instrument between major recalibrations.
To check or adjust only part of the instrument, start with the Equipment Required list preceding the
desired portion of the procedure. To prevent unnecessary recalibration of other parts of the instrument,
re-adjust only if the tolerance given in the CHECK-— part of the step is not met. If re-adjustment is
necessary, also check any steps listed in the INTERACTION part of the step.
TEST EQUIPMENT REQUIRED
The test equipment listed in Table 5-1, or equivalent, is required for complete calibration of the
7623A. Specifications given for the equipment are the minimum necessary for accurate calibration. There-
fore, the equipment used must meet or exceed the listed specifications. Detailed operating instructions
for the test equipment are not given in this procedure. Refer to the appropriate instruction manual tf
more information is needed.
If only a Performance Check is to be performed, not all of the listed test equipment is required.
{tems used only for calibration are indicated by footnote 1. The remaining pieces of equipment are
common to both procedures.