# :FUNCtion:PARameters:BESSel:BANDwidth

Bessel Paramters Commands

- :FUNCtion:PARameters:BESSel:BANDwidth
- :FUNCtion:PARameters:BESSel:IMPulse
- :FUNCtion:PARameters:BESSel:RTIMe
- :FUNCtion:PARameters:BESSel:STEP
- :FUNCtion:PARameters:BESSel:TFUNction

## Command Syntax

    :FUNCtionN:PARameters:BESSel:BANDwidth <cutoff_frequency>

<cutoff_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:BESSel:BANDwidth?

## Description

For the Bessel filter operator (`:FUNCtion:FOPerator`), this command specifies the cutoff frequency in Hertz .

This command and the `:FUNCtion:PARameters:BESSel:RTIMe` command offer different ways of specifying the same filter parameter, where BW = 0.35/RT. Changing one value will set the equivalent other value.

## Example Command Sequence

    :FUNCtion2:FOPerator BESSel
    :FUNCtion2:PARameters:BESSel:BANDwidth 7.5E9
    :FUNCtion2:COLor TCOLor4
    :FUNCtion2:DISPlay ON
    *OPC?
    …  //  Your code to synchronize execution timing.