# :DIFF:FILTer:CFRequency

:DIFF FILTer Commands

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

## Command Syntax

    :DIFFN:FILTer:CFRequency <center_frequency>

Where N identifies a specific differential waveform in the form "<connection1-8>_<ch1|ch3|ch5|ch7>". With connection 1, the connection number part (that is, "1_") is optional, and you can simply use the channel number "<ch1|ch3|ch5|ch7>". When two channels are paired to create a differential waveform and a common-mode waveform, the odd-numbered channel is used when specifying the waveform. For example, connection 5 differential waveform 3 (from the pairing of channels 3 and 4) is `DIFF5_3`.

<center_frequency> is a double.

## Query Syntax

    :DIFFN:FILTer:CFRequency?

## Description

When the `BANDpass` filter type is selected (see `:DIFF:FILTer:TYPE`), this command specifies the center frequency of the bandpass filter.