# :CHANnel:FILTer:ACQuisition:BANDwidth

:CHANnel FILTer Commands

- :CHANnel FILTer Commands
- :CHANnel:FILTer:ACQuisition:BANDwidth
- :CHANnel:FILTer:ACQuisition:MODE
- :CHANnel:FILTer:BANDwidth
- :CHANnel:FILTer:CFRequency
- :CHANnel:FILTer:SPAN?
- :CHANnel:FILTer:TYPE

## Command Syntax

    :CHANnelN:FILTer:ACQuisition:BANDwidth <bandwidth>

Where N identifies a specific channel in the form "<connection1-8>_<ch1-8>". With connection 1, the connection number part (that is, "1_") is optional, and you can simply use the channel number "<ch1-8>". For example, connection 4 channel 2 is `CHANnel4_2`.

<bandwidth> is a double.

## Query Syntax

    :CHANnelN:FILTer:ACQuisition:BANDwidth?

## Description

For the oscilloscope input channel hardware bandwidth limit filter, when the filter mode is `CUSTom` (see `:CHANnel:FILTer:ACQuisition:MODE`), this command specifies the bandwidth of the channel's brick-wall filter.

Because filter bandwidths are typically the -3 dB roll-off point, the maximum bandwidth that can be specified is 105% of the oscilloscope's licensed bandwidth.

## Using the :MAXimum? Common Child Query to Find Oscilloscope Hardware Limits

The `:MAXimum?` common child query (see Common Child Commands) can be used to determine the oscilloscope's, possibly licensed, hardware capabilities.

For example, the `:CHANnelN:FILTer:ACQuisition:BANDwidth:MAXimum?` query will tell you the oscilloscope channel's maximum bandwidth.