Ronde & Schwarz 1304.0004K03, Руководство пользователя

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The Spectrum Application (RF Measurements)
R&S
®
FPL1000
343 User Manual 1178.3370.02 ─ 11
6.7.1.4 How to Configure a Triggered Measurement
To define a time trigger:
1. In the "Trigger And Gate" dialog box, define the "Trigger Source" = "Time".
2. Define the "Repetition Interval": the time after which a new measurement is started.
To define an external trigger:
1. Connect an external device that will provide the trigger signal to one of the TRIG-
GER INPUT / OUTPUT connectors on the R&S FPL1000.
For details see the R&S FPL1000 "Getting Started" manual.
2. In the "Trigger And Gate" dialog box, define the "Trigger Source" = "External".
3. Configure the external trigger as described for the other power triggers.
To define a power trigger:
1. In the "Trigger And Gate" dialog box, define the "Trigger Source" = "IF Power".
2. Define the "Trigger Level": the power level at which the measurement will start.
3. Define whether the signal must cross the trigger level on a falling or on a rising
edge ("Slope") to trigger the measurement.
4. To start the measurement with a time delay, define a "Trigger Offset".
5. To reject triggers due to noise or jittering in the signal, define a "Hysteresis" that is
larger than the expected noise or jittering. After the previous trigger, the signal
must exceed this threshold before the next level crossing triggers a new measure-
ment.
6. To skip multiple triggers in a burst, define a "Holdoff" time that must pass between
two triggers. The holdoff time should be slightly larger than the burst.
6.7.2 Gating
● Gated Measurements ............................................................................................343
● Gate Settings ........................................................................................................ 344
● How to Configure a Gated Measurement ..............................................................345
6.7.2.1 Gated Measurements
Like a gate provides an opening in a fence, a gated measurement lets data from the
input signal pass in defined areas only. The
gate controls exactly when data is included
in the measurement results and when not. The gate is opened by the trigger source,
which is also the gate source.
Trigger and Gate Configuration