:MEASure:CRECovery:RJ?
Query Syntax
:MEASure:CRECovery:RJ?
Description
Queries the JSA RJ (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 an N1060A or N107x-series clock recovery module with an L-RND or L-SNT license for 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:RJ?:STATus?')):
measurement = Flex.query(':MEASure:CRECovery:RJ??')
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:RJ?:COUNt?). The technique uses the :COUNt? common measurement query. For example,
if (Flex.query(':MEASure:CRECovery:RJ?:COUNt?') >= Flex.query(':ACQuire:ECOUNt?')):
measurement = Flex.query(':MEASure:CRECovery:RJ??')
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?.