:MEASure:EYE:PAM:VECLosure:REFerence

Meas. mode:
Eye
Waveform type:
PAM
NRZ
Package License:
RND
MFG
SNT
Flex Apps:
FlexDCA
FlexRT
PAM Vert. Eye Closure Commands

Command Syntax

:MEASure:EYE:PAM:VECLosure:REFerence {OMA | EAMPlitude}

Query Syntax

:MEASure:EYE:PAM:VECLosure:REFerence?

Query Response

{OMA | EAMP}

Description

Selects the reference for the :MEASure:EYE:PAM:VEClosure (VEC) measurement to be either the Optical Modulation Amplitude (OMA) or the eye opening (EAMPlitude). When OMA is selected, the OMA is calculated in Eye mode's normal manner where pattern lock is used to find long sequences of the top and bottom levels. If long sequences are not available, OMA is estimated at the crossings and a questionable status notice is displayed in the results. The ideal opening is then the OMA divided by the number of eyes (1 for NRZ or 3 for PAM4). To specify the definition for the eye opening, use the :MEASure:EYE:PAM:VEClosure:DEFine:EOPening command.

Requires FlexDCA revision A.06.60 and above.