:SPRocess:DFEQualizer:TAPS:AUTo

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:AUTo {ON | OFF | 1 | 0}

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.

Query Syntax

:SPRocessN:DFEQualizer:TAPS:AUTo?

Query Response

{1 | 0}

Description

Turns on and off automatic configuration of taps for a Decision Feedback Equalizer operator (DFE). By default, automatic configuration is on.

OFF
Disables automatic tap configuration to enable manual entry of tap values. Use the :SPRocess:DFEQualizer:TAPS command to enter the individual tap values.
ON
Enables automatic tap configuration which sets the optimum tap values to open an eye diagram. This is the default setting. To enter the number of taps, use the :SPRocess:DFEQualizer:TAPS:COUNt command. Use the :SPRocess:DFEQualizer:TAPS:RECalculate command to automatically recalculate the tap values.

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:AUTo 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:AUTo

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

Beginning with FlexDCA revision A.05.60, use of an *OPC? query to pause program execution while waiting for this command to execute.

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;*OPC?
:SPRocess1:DFEQualizer:DTHReshold OFF