:MEASure:CRECovery:DJ?

Meas. mode:
Scope
Eye
Jitter
Package License:
L-RND
Feature:
JSA
Waveform type:
NRZ
PAM4
Flex Apps:
FlexDCA
JSA DJ (rms) Commands

Query Syntax

:MEASure:CRECovery:DJ?

Description

Queries the JSA DJ (rms) measurement, which is a band-limited Deterministic Jitter measurement. Specify the integration limits using the :CRECovery:JSANalysis:INTegrate:F command.

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:DJ?:STATus?')):
	measurement = Flex.query(':MEASure:CRECovery:DJ??')

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:DJ?:COUNt?). The technique uses the :COUNt? common measurement query. For example,

if (Flex.query(':MEASure:CRECovery:DJ?:COUNt?') >= Flex.query(':ACQuire:ECOUNt?')):
	measurement = Flex.query(':MEASure:CRECovery:DJ??')

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?.