8-18
Limit Tests and Digital I/O
Model 6487 Reference Manual
SCPI programming — limit tests
Table 8-3
Limit test commands
Command
Description
Default Ref
:CALCulate2
CALCulate2 Subsystem:
:FEED <name>
Select input path for limit testing: CALCulate[1]
or SENSe[1].
SENS
A
:LIMit[1]
Limit 1 Testing:
:UPPer
Configure upper limit:
[:DATA] <n>
Set limit: -9.99999e20 to 9.99999e20.
1.0
:SOURce2 <NDN> or <NRf>
Specify 4-bit output “fail” pattern.
15
B
:LOWer
Configure lower limit:
[:DATA] <n>
Set limit: -9.99999e20 to 9.99999e20.
-1.0
:SOURce2 <NDN> or <NRf>
Specify 4-bit output “fail” pattern.
15
B
:STATe <b>
Enable or disable Limit 1 test.
OFF
:FAIL?
Return result of Limit 1 test: 0 (pass) or 1 (fail).
C
:LIMit2
Limit 2 Testing:
:UPPer
Configure upper limit:
[:DATA] <n>
Set limit: -9.99999e20 to 9.99999e20.
1.0
:SOURce2 <NDN> or <NRf>
Specify 4-bit output “fail” pattern.
15
B
:LOWer
Configure lower limit:
[:DATA] <n>
Set limit: -9.99999e20 to 9.99999e20.
-1.0
:SOURce2 <NDN> or <NRf>
Specify 4-bit output “fail” pattern.
15
B
:STATe <b>
Enable or disable Limit 2 test.
OFF
:FAIL?
Return result of Limit 2 test: 0 (pass) or 1 (fail).
C
:CLIMits
Composite Limits:
:CLEar
Clear I/O port and restore it back to
SOURce2:TTL settings:
[:IMMediate]
Clears I/O port immediately.
:AUTO <b>
When enabled, I/O port clears when :INITiate
sent.
ON
:PASS
Define “pass” digital output pattern.
:SOURce2 <NDN> or <NRf>
Specify 4-bit pass pattern (no failures).
15
B
:DATA?
Return CALC2 reading(s) triggered by INITiate.
D
:LATest?
Return last (latest) CALC2 reading.
D
