Tektronix 442, Инструкция по эксплуатации

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Calibration Procedure—442 Service
Performance Check
Table 4-1 (cont)
Description Minimum Specification
Usage Examples
18. Screwdriver
Bit, 3/32"; shaft, 3". Variable resistor adjust. a. Xcelite, R3323.
19. Shield Calibration fixture,
vertical. Vertical Amplifier
adjustment. a. Tektronix Part No.
067-0867-00.
20. Termination
(two required)
Impedance, 50 Q;
connectors, bnc. Signal termination.. a. Tektronix Part No.
011-0049-01.
21. T Connector
Connectors, bnc. Signal Interconnection. a. Tektronix Part No.
103-0030-00.
Requires a TM 500 Series power module.
PERFORMANCE CHECK
INTRODUCTION
Purpose
The following procedure is intended to be used to
determine the acceptability of newly purchased or recent­
ly recalibrated instruments. This procedure does not
check every facet of the instrument’s calibration; rather it
is concerned primarily with those portions of the instru­
ment that are essential to measurement accuracy and
correct operation. Removing the instrument’s dust cover
is not necessary to perform this procedure. All checks are
made from the front panel.
Limits and Tolerances
The limits and tolerances listed in this Performance
Check are instrument specifications only if they are listed
in the Performance Requirement column of the tables in
Specification, Section 1.
Line Voltage Selection
Refer to the Preliminary Procedure preceding the
Performance Check steps for instructions on setting the
442 for the available power input source voltage.
Test Equipment
All equipment is assumed to be calibrated and
operating within the original specifications. The
tolerances given in this performance check are for the
oscilloscope under test and do not include test equipment
error.
In this procedure, test equipment is named by the
functional description (see Table 4-1 Description), rather
than by specific front-panel nomenclature. The acc­
essories listed are typical bench items.
The following abbreviated list includes the items in
Table 4-1 that are required to perform a complete
Performance Check. For equipment specifications, usage,
and recommended types, refer to Table 4-1.
1. Amplitude Calibrator
2. Leveled Sine-wave Generator
3. Time-mark Generator
4. 42-inch, 50 Q cable (2 required)
5. Dual-input Coupler
6. 50 Q Termination (2 required)
7. Bnc T Connector
8. 10X Probe (442 Standard Accessory)
9. IX Probe
10. Bnc female-to-female adapter
11. Television Signal Source
Test Equipment Alternatives
When equipment other than that recommended is
used, control settings or test setup may need to be altered.
If the exact item of equipment given as an example in the
R E V A M A Y 1980
4-3