GUI Reference
R&S
®
ZNA
537
User Manual 1178.6462.02 ─ 12
The spurious signal can be eliminated by dividing the sweep range into two segments
with different LO settings:
●
In the low-frequency segment ranging up to the center frequency of the bandpass
filter, the frequency of the local oscillator is set to LO < RF. This setting ensures
that the spurious signal b'
2
is not measured at port 2.
●
In the high-frequency segment, starting at the center frequency of the bandpass fil-
ter, the frequency of the local oscillator is set to LO > RF. If the center frequency is
larger than B
+
– 2*IF, then there is no distortion from b'
2
.
Remote command:
IF Gain Mode
Controls the gain of the wideband and narrowband signal path.
The "IF Gain Mode" can only be configured if
"Narrowband" or if
"Manual"
mode allows you to select the preferred "IF Gain Mode" per sweep segment,
drive port and receiver (see
"Drive-port specific settings"
Remote command:
[SENSe<Ch>:]POWer:GAINcontrol:GLOBal
Manual Config...
The "Manual Config..." button opens the "Wideband IF Gain Manual Configuration" dia-
log that allows to configure the GC for the individual sweep segments, drive ports and
receivers. This button is enabled in "Manual"
only.
Segmented IF Gain
"Segmented IF Gain" enables segment-specific gain settings. It is available for "Seg-
mented" sweep type only.
Remote command:
[SENSe<Ch>:]SEGMent<Seg>:POWer:GAINcontrol:CONTrol
Phase Mode
De/Activates coherence mode in combination with low phase noise mode.
With "Coherence Off", measurement times are shorter than with "Coherence ON". If
coherence is required, the setup dialog switches it on automatically.
Note:
With FW V1.80, the default "Phase Mode" was changed from "Coherence On" to
"Coherence Off".
Remote command:
LO Usage
This control is only available, if the analyzer is equipped with a second LO (see
ter 5.7.14, "Internal Second LO Generator (up to 26.5 GHz)"
whether only the first (default) or both LOs are used.
By default it is set to "Use only 1 LO". For frequency-converting DUTs, it is automati-
cally set to "Use both LOs".
Mode Softtool