:MEASure:EYE:PAM:ESKew

Command Syntax

:MEASure:EYE:PAM:ESKew

Query Syntax

:MEASure:EYE:PAM:ESKew?

Description

Returns Eye/Mask mode's PAM4 Eye Skews measurement where the skew (seconds or UI) of an eye is measured on a PAM4 signal. For NRZ signals, the skew is always 0.0 seconds. Select the eye measurement to be returned using the :EYE child command. To measure the eye skews for all of the eyes on a PAM4 signal, you must send this command once for each eye as there is no command for simultaneously measuring all eye skews.

Measurement Identification

Avoid subtle programming errors! To ensure that the correct measurement is installed or queried, always explicitly identify a measurement when installing a measurement or querying a measured value, status, or detail. To identify a measurement, specify the measurement's source waveform (:SOURce child command). With some measurements, you may also need to specify other identifying values. Generally, when selecting a measurement using FlexDCA's GUI, if a dialog appears prompting you to select values, you should explicitly specify these values when remotely identifying the measurement. More information.

For example, to return the status of the measurement, :MEASure:EYE:PAM:ESKew:

flex.write(':MEASure:EYE:PAM:ESKew:SOURce CHAN1A')
if flex.query(':MEASure:EYE:PAM:ESKew:STATus?') == 'CORR';
    measurement = flex.query(':MEASure:EYE:PAM:ESKew?')
else:
	details = flex.query(':MEASure:EYE:PAM:ESKew:STATus:DETails?')
	reason = flex.query(':MEASure:EYE:PAM:ESKew:STATus:REASon?')

Child commands for measurement identification:

• BANANA:SOURce

Related Commands

Command	Equivalent Setting in PAM-N Analysis Setup Dialog Box	Description
:MEASure:PAM:EYE:ESTiming	Receiver Sample Timing	Configures the timing for sampling the signal data for all PAM measurements in Eye/Mask mode.
:MEASure:PAM:EYE:ELMethod	Eye Center Location	Selects the basis for determining the location of an eye's center on the waveform: at maximum eye width or maximum eye height.
:MEASure:PAM:EYE:PPERcent	Eye Level Width	Defines the timespan (in percentage of symbol width) over which an eye's amplitude level is measured.
:MEASure:PAM:EYE:TIME:UNITs	Time Units	Sets the time units measurement: seconds or unit intervals.

Example Command Sequence

:MEASure:EYE:PAM:ESKew:SOURce CHAN1A
:MEASure:EYE:PAM:TIME:UNITs UINTerval
:MEASure:EYE:PAM:ESKew:EYE EYE1
:MEASure:EYE:PAM:ESKew
:MEASure:EYE:PAM:ESKew?