# :FUNCtion:PARameters:FFEQualizer:NPRecursors

Linear Equalizer Parameters Commands

- :FUNCtion:PARameters:FFEQualizer:BANDwidth
- :FUNCtion:PARameters:FFEQualizer:BANDwidth:AUTO
- :FUNCtion:PARameters:FFEQualizer:BWMode
- :FUNCtion:PARameters:FFEQualizer:CLKDelay
- :FUNCtion:PARameters:FFEQualizer:DCGain?
- :FUNCtion:PARameters:FFEQualizer:IMPulse
- :FUNCtion:PARameters:FFEQualizer:NPRecursors
- :FUNCtion:PARameters:FFEQualizer:PRESets
- :FUNCtion:PARameters:FFEQualizer:PRESets:SELections?
- :FUNCtion:PARameters:FFEQualizer:STEP
- :FUNCtion:PARameters:FFEQualizer:TAPS
- :FUNCtion:PARameters:FFEQualizer:TAPS:AUTO
- :FUNCtion:PARameters:FFEQualizer:TAPS:COUNt
- :FUNCtion:PARameters:FFEQualizer:TAPS:NORMalize
- :FUNCtion:PARameters:FFEQualizer:TAPS:RECalculate
- :FUNCtion:PARameters:FFEQualizer:TFUNction
- :FUNCtion:PARameters:FFEQualizer:TSPacing
- :FUNCtion:PARameters:FFEQualizer:TSPacing:TIME
- :FUNCtion:PARameters:FFEQualizer:TSPacing:TPUI
- :FUNCtion:PARameters:FFEQualizer:WIDTh

## Command Syntax

    :FUNCtionN:PARameters:FFEQualizer:NPRecursors <precursors>

<precursors> is a int.

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

    :FUNCtionN:PARameters:FFEQualizer:NPRecursors?

## Description

Specifies precursors for a Linear Equalizer operator (LFE) (`:FUNCtion:FOPerator`). To enter the number of taps, use the `:FUNCtion:PARameters:FFEQualizer:TAPS:AUTO` command. Before you can use these commands, turn on the automatic determination of tap values (`:FUNCtion:PARameters:FFEQualizer:TAPS:AUTO`).

To manually enter tap values, first disable automatic tap configuration (`:FUNCtion:PARameters:FFEQualizer:TAPS:AUTO`), then use the `:FUNCtion:PARameters:FFEQualizer:TAPS` command.

## Example Command Sequence

    :FUNCtion2:FOPerator FFEQualizer
    :FUNCtion2:PARameters:FFEQualizer:TAPS:AUTO ON;*OPC?
    :FUNCtion2:PARameters:FFEQualizer:TAPS:COUNt 5;*OPC?
    :FUNCtion2:PARameters:FFEQualizer:NPRecursors 3;*OPC?
    :FUNCtion2:PARameters:FFEQualizer:BANDwidth:AUTO OFF
    :FUNCtion2:PARameters:FFEQualizer:BANDwidth 8.0E9
    :FUNCtion2:COLor TCOLor4
    :FUNCtion2:DISPlay ON
    *OPC?
    …  //  Your code to synchronize execution timing.