Rohde & Schwarz R&S UPP, User Manual

Page: 263 / 938

Instrument Functions
R&S
®
UPP
247 User Manual 1411.1055.32 ─ 10
A DC offset is superimposed on the generator signal. The DC offset decreases the
maximum AC voltage. The checkbox enables or disables this function. The value con-
figured for the offset voltage is always displayed.
Remote command:
SOURce:VOLTage:OFFSet<n3>:STATe
on page 700
SOURce:VOLTage:OFFSet<n3>
on page 699
5.6.6 DFD
The generator generates a test signal for the intermodulation measurement using the
differential-tone method in accordance with IEC 118 or 268.
The signal consists of two close sine waves of the same amplitude.
Panel of digital generator with DFD function selected
Function
Selects the DFD test signal.
Remote command:
SOURce:FUNCtion
on page 697
DFD
Mode
Used to select the entry mode for the frequencies of both signals.
"IEC 268" Entry of center frequency (Mean Freq) and difference frequency (Diff
Freq). If a frequency sweep (for the x- or z-axis) is selected, the cen-
ter frequency is swept.
"IEC 118" Entry of upper frequency (Upper Freq) and difference frequency (Diff
Freq). If a frequency sweep (for the x- or z-axis) is selected, the
upper frequency is swept.
Remote command:
SOURce:FUNCtion:MODE
on page 703
Generator Signals