:SPRocess:DFEQualizer:TAPS:RECalculate

Instrument:
N1000A
N109x
Flex Apps:
FlexDCA
FlexRT
Meas. mode:
Scope
Eye
Jitter
Package License:
L-RND

To Install DFE Operator

Use this command:

:FUNCtion:FOPerator DFEQualizer

If secondary to Reference Rx operator:

:FUNCtion:SOP4 DFEQualizer

DFE Commands

Command Syntax

:SPRocessN:DFEQualizer:TAPS:RECalculate

Where N identifies one of up to 64 possible operators {1:64} that can be defined as part of a math function. The operators are numbered in the order that they were originally added to the function.

Description

Initiates a re-calculation of the tap values for a Decision Feedback Equalizer operator (DFE). Do not follow this command with an *OPC? command. Automatic tap configuration must first be enabled (:SPRocess:DFEQualizer:TAPS:AUTo ON).

 

For Reference Rx operator, what function do I send this command to?

If the DFE equalizer is a secondary function to the Reference Rx operator, address the :SPRocess:DFEQualizer:TAPS:RECalculate command to the Reference Rx function as identified in the following Reference Rx Setup dialog's operator diagram. In the following figure, this would be Function 2 and the command would be:

:SPRocess2:DFEQualizer:TAPS:RECalculate

The Decision Feedback Equalizer operator is provided with the N1010A-201 Advanced Waveform Analysis license.

Requires FlexDCA revision A.02.00 and above.

Example Command Sequence

:FUNCtion1:FOPerator DFEQualizer
:FUNCtion1:DISPlay ON
:FUNCtion1:COLor TCOLor9
:SPRocess1:DFEQualizer:TAPS:AUTo ON;*OPC?
:SPRocess1:DFEQualizer:TAPS:COUNt 5;*OPC?
:SPRocess1:DFEQualizer:TAPS:ULIMit 4.5E-1;*OPC?
:SPRocess1:DFEQualizer:TAPS:LLIMit -4.5E-1;*OPC?
:SPRocess1:DFEQualizer:CLKDelay 4.0E-12
:SPRocess1:DFEQualizer:BANDwidth:AUTo OFF
:SPRocess1:DFEQualizer:BANDwidth 1.0E+10
:SPRocess1:DFEQualizer:TAPS:RECalculate
:SPRocess1:DFEQualizer:DTHReshold OFF