Common Measurement Settings
R&S
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FSVA3000/ R&S
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FSV3000
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User Manual 1178.8520.02 ─ 01
Example:
Figure 8-22: Continuous gating for a gate period count of 9
Continuous gating is useful, for example, if you want to measure a periodic signal
which occurs after a specific trigger event. Using gate periods, you can average the
individual periods of the signal for several trigger events.
Continuous gating can also improve the measurement speed, as you no longer have to
wait for the next external, IF power or power sensor trigger events, but can measure
several periodic bursts after a single trigger event.
Settings for continuous gate periods are defined in a separate tab of the "Trigger / Gate
Config" dialog box (see
Chapter 8.6.2.3, "Continuous Gate Settings"
Restrictions for continuous gating
While continuous gating reduces the number of required external, IF power or power
sensor trigger events, not every sweep constellation can be performed using just one
external, IF power or power sensor trigger event. Note the following restrictions:
●
The number of gates is limited to 1023. If the required measurement time exceeds
the duration of 1023 gates, a new external, IF power or power sensor trigger event
is necessary for each subsequent 1023 gates.
●
In "Sweep Mode Type: Sweep", more than one external trigger events may be nec-
essary due to hardware segmentation of the sweep
●
In "Sweep Mode Type: FFT", more than one external trigger event may be neces-
sary, but the covered span with one external trigger event is normally larger than in
"Sweep Mode Type: Sweep".
In FFT mode, it is recommended that you activate the "Optimization mode: Speed",
as it further reduces the required number of external trigger events.
Triggered gated measurements
By default, the gate is opened by the trigger source, which is also the gate source.
However, you can also use different sources for a general trigger and the beginnning of
Trigger and Gate Configuration