
Quick Performance Check
The quick performance check is a combination of internal self-test
and an abbreviated performance test (specified by the letter
Q
in the
performance verification tests). This test provides a simple method to
achieve high confidence in the instrument’s ability to functionally
operate and meet specifications. These tests represent the absolute
minimum set of performance checks recommended following any
service activity. Auditing the instrument’s performance for the quick
check points (designated by a
Q
) verifies performance for “normal”
accuracy drift mechanisms.
This test does not check for abnormal
component failures.
To perform the quick performance check, do the following:
•
Perform a complete self-test. A procedure is given on page 73.
•
Perform only the performance verification tests indicated with the
letter
Q
.
If the instrument fails the quick performance check, adjustment or
repair is required.
Performance Verification Tests
The performance verification tests are recommended as acceptance
tests when you first receive the instrument. The acceptance test
results should be compared against the 90 day test limits. You should
use the 24-hour test limits only for verification within 24 hours after
performing the adjustment procedure. After acceptance, you should
repeat the performance verification tests at every calibration interval.
If the instrument fails performance verification, adjustment or repair
is required.
Adjustment is recommended at every calibration interval. If adjustment
is not made, you must guard band, using no more than 80% of the
specifications listed in Chapter 1, as the verification limits.
Chapter 4 Calibration Procedures
Performance Verification Tests
74
Summary of Contents for 34970A
Page 1: ...Agilent 34970A Data Acquisition Switch Unit Service Guide ...
Page 34: ...32 ...
Page 35: ...2 Quick Start 2 ...
Page 49: ...3 Front Panel Overview 3 ...
Page 62: ...60 ...
Page 63: ...4 Calibration Procedures 4 ...
Page 118: ...116 ...
Page 119: ...5 Theory of Operation 5 ...
Page 159: ...6 Service 6 ...
Page 177: ...General Disassembly 4 3 2 1 6 Chapter 6 Service Disassembly 175 ...
Page 178: ...Internal DMM Disassembly 3 2 1 Chapter 6 Service Disassembly 176 ...
Page 180: ...Additional Chassis Disassembly 1 2 Chapter 6 Service Disassembly 178 ...
Page 181: ...Plug In Module Disassembly Needle nose Pliers 6 Chapter 6 Service Disassembly 179 ...
Page 182: ...180 ...
Page 183: ...7 Replaceable Parts 7 ...
Page 220: ...Chapter 7 Replaceable Parts Manufacturer s List 218 ...
Page 221: ...8 Schematics 8 ...
Page 272: ......