Monitoring Signal Characteristics
R&S
®
SMW200A
596User Manual 1175.6632.02 ─ 16
With "Acquisition > Multi Gated", the instruments uses the "Marker 2" and "Marker 3"
signals, see Figure 8-18.
See also Chapter 8.2.4, "How to Query Information on the Baseband Power Levels",
on page 597.
Remote command:
[:SOURce]:BB:MEASurement:POWer:GSOurce on page 1021
Sweep Time/Duration
Depending on the selected Run Mode, determines the measurement duration/sweep
time of the performed measurement.
Note:
Especially if a fading is enabled, it is important to trigger the measurement with an
appropriate duration. To ensure correct obtained average values:
●
Enable a "Run Mode > Single"
●
Select a measurement period that is long enough to average the fading signal and
the channel state information.
In "Acquisition > Gated", the value of the parameter "Sweep Time/Duration" relates to
the effective time during that the signal is measured; the duration is determined by the
corresponding marker(s) signal (high values) and not to as an absolute duration/sweep
time.
Example:
A measurement with the following settings:
●
"Acquisition > Gated"
●
Duty cycle of the marker signal used as gate source = 1%
●
"Duration/Sweep Time = 1 s"
This measurement lasts effectively 100 s.
Remote command:
[:SOURce]:BB:MEASurement:POWer:DURation on page 1023
Level/PEP
Indicates the measured power level and peak power (PEP) retrieved according to the
selected acquisition method and at the selected acquisition point.
The power units depend on the selected output measurement point:
●
Measurements at the digital output interfaces (for example BBMM1) are represen-
ted in dBFs, as relative to full scale of 0.5 V
●
Measurements at the analog interfaces I/Q in mV respectively
●
All other measurement results are represented in dBm.
Possible internal gains and attenuations are compensated.
Remote command:
[:SOURce]:BB:MEASurement:POWer:PEAK? on page 1022
[:SOURce]:BB:MEASurement:POWer:RMS? on page 1022
Run Mode
Determines whether the measurements are performed continuously with the selected
"Sweep Time" ("Auto") or are executed once ("Single").
Querying Information on the Baseband Power Levels
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