Dfd Measurements - Keysight U8903B User Manual

DFD measurements

The DFD measurement is similar to SMPTE IMD, except that the two tones in the stimulus
signal are of equal amplitude and are spaced closer to each other (typically 19 kHz and
20 kHz). This measurement also allows you to select either the second or third order
intermodulation distortion. The available DFD measurements are DFD 60268 2nd, DFD
60268 3rd, DFD 60118 2nd, or DFD 60118 3rd.
DFD measurement function mode is applicable for the analog, digital, and Bluetooth audio
analyzer. The settings for DFD measurements are displayed as shown in Figure 4-36,
Figure 4-37, and Figure 4-38 for the analog, digital, and Bluetooth analyzer respectively.
Figure 4-36
Figure 4-37
Keysight U8903B User's Guide
Analog Analyzer > Functions > DFD 60268 2nd menu page 1
Digital Analyzer > Functions > DFD 60268 2nd menu page 1
Audio Analyzer Measurement Functions 4
213