92
Digitizer Command Reference
* These tests require the HP E1564A 4-Channel Digitizer.
Self-Test Error
Definitions
A failed self-test will return a number other than zero. The binary value of that
number defines the failure mode. More than one failure mode may result from one
self-test. The failure modes are defined in the following sections for each type of
self-test.
The bits and their weighting are shown below.
Offset Noise Test (self-test numbers 3 - 58)
Offset DAC Test (self-test numbers 59-62)
(HP E1564A 4-Channel Digitizer)
90*
Channel 4: 64V uncalibrated gain
91*
Channel 1: 256V uncalibrated gain
92*
Channel 2: 256V uncalibrated gain
93*
Channel 3: 256V uncalibrated gain
94*
Channel 4: 256V uncalibrated gain
test_number
Description
bit #
7
6
5
4
3
2
1
0
weight
128
64
32
16
8
4
2
1
BCD weight
Failure mode
1
Span is zero
2
Span is too large
4
Mean is too low
8
Mean is too high
16
Standard deviation is too large
BCD weight
Failure mode
1
DAC measurement is noisy
2
Measured data span is too small
4
Lower end point to upper end point span is too small
8
Lower end point to upper end point span is too large
16
Offset DAC span does not include 0
32
Bit weight is out of limits; the offending bit is in B15-B8.
Summary of Contents for E1563A
Page 8: ......
Page 24: ...24 Digitizer Module Set up ...
Page 84: ...84 Digitizer Command Reference ...
Page 110: ...110 ...
Page 138: ...138 HP E1563A and E1564A Register Based Programming Appendix B ...
Page 156: ...156 HP E1563A and E1564A Verification Tests ...