:SPRocess:FFEQualizer:TAPS:LIMits:STATe

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

To Install FFE Operator

Use this command:

:FUNCtion:FOPerator FFEQualizer

If secondary to Reference Rx operator:

:FUNCtion:SOP3 FFEQualizer

Command Syntax

:SPRocessN:FFEQualizer:TAPS:LIMits:STATe {ON | OFF}

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:FFEQualizer:TAPS:LIMits:STATe?

Description

Turns on or off the application of tap limits for the Linear Equalizer operator (FFE). This includes the main tap, precursors, and postcursors. The default state is OFF. To set or query the tap limit values, use these commands:

Main Tap

Precursors

Postcursors

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

If the FFE (Linear Equalizer) equalizer is a secondary function to the Reference Rx operator, address the :SPRocess:FFEQualizer:TAPS:LIMits:STATe 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:FFEQualizer:TAPS:LIMits:STATe

The Linear Feedforward Equalizer operator is provided with the N1010A-201 Advanced Waveform Analysis license.

Requires FlexDCA revision A.07.80 and above.

Example Command Sequence

flex.write(':FUNCtion2:FOPerator FFEQualizer')
flex.write(':FUNCtion2:DISPlay ON')
flex.write(':FUNCtion2:COLor TCOLor2')
flex.write(':SPRocess2:FFEQualizer:TAPS:AUTo ON')
flex.write(':SPRocess2:FFEQualizer:TAPS:LIMits:MAIN:MAX 2.52')
flex.write(':SPRocess2:FFEQualizer:TAPS:LIMits:MAIN:MIN 7.8E-1')
flex.write(':SPRocess2:FFEQualizer:TAPS:LIMits:PRE:MAX 0.10, 0.10, 0.20, 0.05')
flex.write(':SPRocess2:FFEQualizer:TAPS:LIMits:PRE:MIN -0.10, -0.10, -0.10, -0.40')
flex.write(':SPRocess2:FFEQualizer:TAPS:LIMits:POST:MAX 0.05, 0.20, 0.10, 0.10')
flex.write(':SPRocess2:FFEQualizer:TAPS:LIMits:POST:MIN -0.40, -0.40, -0.10, -0.10')
flex.write(':SPRocess2:FFEQualizer:TAPS:LIMits:STATe ON')