Rohde & Schwarz R&S ZNA Series - Page 381

GUI reference
R&S
®
ZNA
381User Manual 1178.6462.02 ─ 29
Intermod
The "Intermod" button opens the intermodulation setup dialog that allows you to set
up the intermodulation measurement:
●
Non-frequency converting
●
Frequency converting
Intermod Product
After the intermodulation measurement has been set up (see "Intermod" on page 381)
this button opens the intermodulation measurements dialog and activates the Intermod
Product tab.
Intercept Point
After the intermodulation measurement has been set up (see "Intermod" on page 381)
this button opens the intermodulation measurements dialog and activates the Intercept
Point tab.
Main Tone
After the intermodulation measurement has been set up (see "Intermod" on page 381)
this button opens the intermodulation measurements dialog and activates the Main
Tone tab.
Noise
"Noise" (at DUT output) is a measure for the noise level and therefore the dynamic
range of the intermodulation measurement. The noise level is measured at the fre-
quency of the lower tone minus half the tone distance.
Remote command:
CALCulate<Ch>:PARameter:MEASure
CALCulate<Ch>:PARameter:SDEFine
CW Mode Spectrum
In CW spectrum mode, the intermodulation measurement is performed at fixed fre-
quency of the lower tone ("CW Frequency") and the upper tone ("CW Frequency" +
"Tone Distance"). The analyzer displays intermodulation products up to a selectable
order ("IM Order") around the lower and upper tone frequencies. The channel settings
differ from the swept intermodulation measurement, therefore a new channel is created
when the spectrum measurement is activated ("Add CW Mode").
The following example shows an intermodulation spectrum with the following settings:
●
CW Frequency: 2 GHz (lower tone, position of marker M1)
●
Tone Distance: 3 MHz (defines the upper tone, position of marker M2)
●
Max. IM Order: 9.
From left to right, the peaks correspond to the following intermodulation products:
– lower IM9
– lower IM7
– lower IM5 (marker M6)
– lower IM3 (marker M5)
– lower tone (marker M1)
– upper tone (marker M2)
– upper IM3 (marker M3)
– upper IM5 (marker M4)
Meas softtool