# :MEASure:FFT:FDFRequency:FDPSecond

FFT Delta Frequency Commands

- :MEASure:FFT:FDFRequency
- :MEASure:FFT:FDFRequency:FAVorite
- :MEASure:FFT:FDFRequency:FDPFirst
- :MEASure:FFT:FDFRequency:FDPSecond
- :MEASure:FFT:FDFRequency:FPLevel
- :MEASure:FFT:FDFRequency:LOCation?
- :MEASure:FFT:FDFRequency:SOURce
- :MEASure:FFT:FDFRequency:STATus?
- :MEASure:FFT:FDFRequency:STATus:DETails?
- :MEASure:FFT:FDFRequency:STATus:REASon?

## Command Syntax

    :MEASure:FFT:FDFRequency:FDPSecond <peak_number>

<peak_number> is a double.

## Query Syntax

    :MEASure:FFT:FDFRequency:FDPSecond?

## Description

Defines the second peak used in the FFT Delta Frequency measurement (`:MEASure:FFT:FDFRequency`).