Rohde & Schwarz EVSF1000, User Manual

Page: 110 / 295

Graphic Measurement Modes
R&S
®
EVSF1000
110 User Manual 1178.6410.02 ─ 05
"Auto" The RF attenuation mode is selected automatically.
The signal attenuation is selected automatically according to the sig-
nal strength.
This mode works best with clean signals. In difficult receiving condi-
tions, the "Low Noise", "Normal" or "Low Distortion" modes can be
more stable.
When monitoring signals with mostly constant signal levels, it is also
recommended that you use the "Low Noise", "Normal" or "Low Distor-
tion" mode.
If the R&S
EVSF1000 has to adapt the attenuation frequently, indica-
ted by a frequent clicking noise from the attenuator, spikes can occur
in the trace.
Remote command:
SETATTMODE
on page 183
SCOPE_ATTMODE
on page 260
FTT_ATTMODE
on page 257
IFSPECT_ATTMODE
on page 253
RF Mode
Defines the RF attenuation mode to be used.
"Low Noise" 15 dB pre-amplification
Provides a high sensitivity. Suitable when scanning the area for dis-
tant signals.
"Norm" 0 dB
Provides a normal sensitivity.
"Low Dist" 15 dB attenuation
Provides a low sensitivity. Suitable when analyzing a nearby signal, to
avoid overload due to high-level signals.
Remote command:
SETATTMODE
on page 183
FSCAN_ATTMODE
on page 248
SCOPE_ATTMODE
on page 260
FTT_ATTMODE
on page 257
IFSPECT_ATTMODE
on page 253
GBAS:ATTMODE
on page 242
7.4.3 Configuring the Measurement Time
Access VNC : [d] > "F1"
Time/Div
Defines the time range displayed in each division of the x-axis. The full x-axis range,
that is: the total measurement time, is eight times this value.
Remote command:
SCOPE_TIMEDIV_RF
on page 261
AF Time Domain Mode (Option R&S EVSG-K12)