:MEASure:CRECovery:TJ?
Query Syntax
:MEASure:CRECovery:TJ?
Description
Queries the JSA TJ (rms) measurement, which is a band-limited Deterministic Jitter measurement. Specify the integration limits using the :CRECovery:JSANalysis:INTegrate:F command.
Jitter Spectrum Analysis (JSA) requires an 86108A/B module with Option JSA . To use JSA in Jitter Mode, L-RND package license (includes feature F-JIT Enhanced Jitter Analysis) is required.
Requires a module with Option JSA. Jitter Spectrum Analysis and SW Clock Recovery Emulation .
Requires FlexDCA revision A.01.70 and above.
Measurement Ready?
To confirm that the measurement is ready to read, you can query the measurement's status:
if ('CORR' in Flex.query(':MEASure:CRECovery:TJ?:STATus?')):
measurement = Flex.query(':MEASure:CRECovery:TJ??')
If averaging is turned on (:ACQuire:AVERaging), you can also confirm if the measurement result is ready by comparing the number of specified averages (:ACQuire:ECOunt?) versus the number of measurement sweeps that have occurred (:MEASure:CRECovery:TJ?:COUNt?). The technique uses the :COUNt? common measurement query. For example,
if (Flex.query(':MEASure:CRECovery:TJ?:COUNt?') >= Flex.query(':ACQuire:ECOUNt?')):
measurement = Flex.query(':MEASure:CRECovery:TJ??')
You can also use an acquisition limit lest to test that a number of waveform samples, or pattern acquisitions have completed before returning a measurement. Refer to the :LTESt:ACQuire:CTYPe command.
Common Measurement Child Queries
This command supports the use of the following common measurement queries: :LOCation?, :COUNt?, :MAXimum?, :MINimum?, :MEAN?, and :SDEViation?.