R&S ZNB Series User Manual

GUI reference
R&S
®
ZNB/ZNBT
580User Manual 1173.9163.02 ─ 62
Remote command:
[SENSe<Ch>:]POWer:LOSuppress[:STATe]
AGC Mode
Configures the gain control (GC) logic.
In "Auto" mode, the analyzer adapts its receiver step attenuator settings to the RF
input level (→ Automatic or Adaptive Gain Control, AGC). The A/D converter is always
operated at optimum input level, selecting one of the following gain settings for every
measurement point:
●
"Low Noise" corresponding to a higher internal A/D converter input level. This set-
ting increases the dynamic range and is appropriate for low RF input levels.
●
"Low Dist", corresponding to a lower internal A/D converter input level. This set-
ting allows for a high RF overdrive reserve and is appropriate for high RF input lev-
els.
"Low Dist" and "Low Noise" can also be selected statically, completely disabling the
adaptive behavior. A static GC mode is appropriate, if the characteristics of the input
paths must be constant, e.g. because:
●
interfering signal contributions originating from the receiver (noise, nonlinear contri-
butions) must not change during the measurement.
●
a large interfering signal close to the measured signal must not overdrive the
receiver.
"Manual" mode allows you to select the preferred "AGC Mode" per sweep segment,
drive port and receiver (see "Drive-port specific settings" on page 581).
Remote command:
[SENSe<Ch>:]POWer:GAINcontrol:GLOBal
Manual Config...
The "Manual Config..." button opens the AGC Manual Configuration dialog that allows
to configure the GC for the individual sweep segments, drive ports and receivers. This
button is enabled in "Manual" AGC Mode only.
Segmented AGC
"Segmented AGC" enables segment-specific gain control settings. It is available for
"Segmented" sweep type only.
Remote command:
[SENSe<Ch>:]SEGMent<Seg>:POWer:GAINcontrol:CONTrol
5.12.3.2 AGC Manual Configuration dialog
The "AGC Manual Configuration" dialog allows you to configure the AGC settings for
individual sweep segments, drive ports and receivers. This button is enabled in "Man-
ual" AGC Mode only.
Access: Channel – [Channel Config] > "Mode" > "AGC Mode" – "Manual Config..."
The manual AGC settings are persisted and reused for subsequent measurement
sweeps, which can increase measurement speed compared to "Auto" mode while not
compromising measurement quality.
Channel Config softtool

R&S ZNB Series Specifications

General

Brand	R&S
Model	ZNB Series
Category	Measuring Instruments
Language	English