Monitoring Signal Characteristics
R&S
®
SMW200A
592User Manual 1175.6632.02 ─ 16
nal segments at which a selected marker signal is high. Any of the "Marker
1/2/3" can be used, where the marker signals always relate to the current base-
band signal source.
– "Multi Gated"
In this acquisition mode, the instrument initiates a set of submeasurements and
displays the measurement results separately on different lines.
The measurement function uses the two used-defined marker signals, the
"Marker 2/3", as they are enabled for the current baseband signal source. The
signal "Marker 2" serves as an "init. marker signal" signal that determines the
repetition window; the signal "Marker 3" is a user defined marker signal and
defines different gates in this repetition window. The term gate describes the
time from a rising edge to a subsequent falling edge of the marker signal. For
example, the "Marker 3" signal illustrated on Figure 8-18 defines three gates.
Figure 8-18: Marker signals used in multi-gated acquisition measurement
Marker 2 = init. marker signal
Marker 3 = user-defined marker signal
In multi-gated acquisition mode, the measured values of different gates are dis-
played as separate submeasurements, i.e. not combined in one result as in the
gated mode. However, the submeasurement results for the same gate index
performed in consecutive repetition windows are combined to smoothen RMS
and peak power depending on measurement duration / sweep time.
Note: We recommend that you configure up to 32 submeasurements per mea-
surement, i.e. 32 gates in a repetition window. The repetition window is defined
by Marker 2 and has to be longer than 100 ms.
This acquisition method is suitable for power measurements on bursted signals
or pulse signals with different duty cycles. Like for example measurement on a
periodic signal composed of a preamble, sounding channel and data, where
each of these three fields is transmitted with different power.
The displayed power values are suitable as control mechanism. The values cannot be
modified to influence the power and level control in the instrument.
A combination of different measurements acquisition methods can be enabled at each
acquisition point. The measurement results are displayed simultaneously in a list.
Refer to Chapter 8.2.4, "How to Query Information on the Baseband Power Levels",
on page 597 for examples on using the provided acquisition methods and their appli-
cation fields.
Querying Information on the Baseband Power Levels
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