Configuration
R&S
®
ESW-K58
24
User Manual 1179.0880.02 ─ 03
The reference level can also be used to scale power diagrams; the reference level is
then used for the calculation of the maximum on the y-axis.
Since the hardware of the R&S
ESW is adapted according to this value, it is recom-
mended that you set the reference level close above the expected maximum signal
level. Thus you ensure an optimum measurement (no compression, good signal-to-
noise ratio).
Note:
Note that for input from the External Mixer (R&S
ESW-B21) the maximum refer-
ence level also depends on the conversion loss; see the R&S
ESW base unit user
manual for details.
Remote command:
DISPlay[:WINDow<n>][:SUBWindow<w>]:TRACe<t>:Y[:SCALe]:RLEVel
Shifting the Display (Offset) ← Reference Level
Defines an arithmetic level offset. This offset is added to the measured level. In some
result displays, the scaling of the y-axis is changed accordingly.
Define an offset if the signal is attenuated or amplified before it is fed into the
R&S
ESW so the application shows correct power results. All displayed power level
results are shifted by this value.
The setting range is ±200 dB in 0.01 dB steps.
Note, however, that the
internal
reference level (used to adjust the hardware settings to
the expected signal) ignores any "Reference Level Offset". Thus, it is important to keep
in mind the actual power level the R&S
ESW must handle. Do not rely on the displayed
reference level (internal reference level = displayed reference level - offset).
Remote command:
DISPlay[:WINDow<n>][:SUBWindow<w>]:TRACe<t>:Y[:SCALe]:RLEVel:
OFFSet
Attenuation
Defines the attenuation of the signal.
You can attenuate the signal in 1
dB steps. The range is specified in the datasheet.
Attenuation of less than 10
dB is only possible if you turn off
.
If you are using the preamplifier in frequency ranges above 8
GHz, the available
attenuation can be reduced.
For more information, see the Preamplifier description in the R&S
ESW base unit user
manual.
The auto ranging feature in the receiver remains active even if you change the attenua-
tion and preamplifier properties in other measurement channels and then return to the
receiver application.
The R&S
ESW also allows you to determine the best attenuation automatically.
●
In the receiver application, turn on the "Auto Ranging" feature.
●
In the other applications, select attenuation "Mode"
➙
"Auto"
Amplitude