Programming
1079
under the questionable limit channel {1-16} extra status register provide
two bits that correspond to traces 15 to 16 and contain the test results (0:
Pass, 1: Fail) for the respective traces; for example, you can obtain the
test result for trace 15 from bit 1 and that for trace 16 from bit 2.
Every bit of the condition register is set to 0 when a measurement cycle is
started. Upon completion of measurement, those bits that correspond to
failed traces are set to 1.
If the corresponding bit of the positive transition filter is set to 1 (preset
value), each bit of the event register is set to 1 when the corresponding bit
of the condition register changes from 0 to 1 (indicating that the
corresponding trace failed the test).
To retrieve the registers, use the following commands:
Questionable limit channel {1-16} status register
Condition register
:STAT:QUES:LIM:CHAN{1-16}:COND?
Event register
:STAT:QUES:LIM:CHAN{1-16}?
Questionable limit channel {1-16} extra status register
Condition register
:STAT:QUES:LIM:CHAN{1-16}:ECH:COND?
Event register
:STAT:QUES:LIM:CHAN{1-16}:ECH?
• Although up to 36 channel is available on E5071C, the registers
for limit test and Ripple/Bandwidth limit tests are for up to 16
channel.
Test Results for each Channel
Using commands that retrieve test results
No command is available that allows you to directly retrieve the test result
for each channel (i.e., the channel-wide result that combines the results
for all traces in a particular channel).
Using the status register
The questionable limit status event register provides 14 bits that
correspond to channels 1 to 14 and contain the test results (0: Pass, 1:
Fail) for the respective channels; for example, you can obtain the test
result for channel 1 from bit 1 and that for channel 14 from bit 14. The
questionable limit extra status event register provides nine bits that
correspond to channels 1 to 2 and contain the test results (0: Pass, 1: Fail)
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