# :FUNCtion:PARameters:CTLequalizer:ZERO

CTLE Parameters Commands

- :FUNCtion:PARameters:CTLequalizer:ACGain
- :FUNCtion:PARameters:CTLequalizer:BANDwidth
- :FUNCtion:PARameters:CTLequalizer:BWMode
- :FUNCtion:PARameters:CTLequalizer:DBACgain
- :FUNCtion:PARameters:CTLequalizer:DBGain
- :FUNCtion:PARameters:CTLequalizer:DEFinition
- :FUNCtion:PARameters:CTLequalizer:FZP
- :FUNCtion:PARameters:CTLequalizer:GAIN
- :FUNCtion:PARameters:CTLequalizer:GDC
- :FUNCtion:PARameters:CTLequalizer:IMPulse
- :FUNCtion:PARameters:CTLequalizer:POLE
- :FUNCtion:PARameters:CTLequalizer:PRESets
- :FUNCtion:PARameters:CTLequalizer:PRESets:SELections?
- :FUNCtion:PARameters:CTLequalizer:STEP
- :FUNCtion:PARameters:CTLequalizer:TFUNction
- :FUNCtion:PARameters:CTLequalizer:ZERO

## Command Syntax

    :FUNCtionN:PARameters:CTLequalizer:ZERO{1|2} <zero_frequency>

<zero_frequency> is a double.

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:CTLequalizer:ZERO{1|2}?

## Description

When the Continuous Time Linear Equalizer (CTLE) operator has been selected (`:FUNCtion:FOPerator CTLE`) and for most of the selected CTLE types (`:FUNCtion:PARameters:CTLequalizer:DEFinition`), the `:FUNCtion:PARameters:CTLequalizer:ZERO` command specifies the zero frequency value(s). The number of zeros for the various CTLE types can be none (in which case, the command is not used), one, or two.

## Example Command Sequence

    :FUNCtion2:FOPerator CTLequalizer
    :FUNCtion2:PARameters:CTLequalizer:GAIN 1.2
    :FUNCtion2:PARameters:CTLequalizer:ZERO1 4.0E9
    :FUNCtion2:PARameters:CTLequalizer:POLE1 10E9
    :FUNCtion2:PARameters:CTLequalizer:POLE2 15.0E9
    :FUNCtion2:COLor TCOLor4
    :FUNCtion2:DISPlay ON
    *OPC?
    …  //  Your code to synchronize execution timing.