Rohde & Schwarz FPL1000 Series, Руководство пользователя

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The Spectrum Application (RF Measurements)
R&S
®
FPL1000
418 User Manual 1178.3370.02 ─ 03
Gate Length
Defines how long the gate is open when it is triggered. The gate length can only be set
in the edge-triggered gate mode. In the level-triggered mode the gate length depends
on the level of the gate signal.
The gate length in relation to the sweep is indicated by a line labeled "GL" .
For more information see Chapter 7.7.2.1, "Gated Measurements" , on page 414
Remote command:
[SENSe:]SWEep:EGATe:LENGth
on page 667
7.7.2.3 How to Configure a Gated Measurement
A gated measurement records data only while the gate conditions are fulfilled. These
step-by-step instructions demonstrate how to configure a gated measurement man-
ually.
To configure a common gated measurement
1. Determine the required parameters as described in Chapter 7.7.1.3, "How to Deter-
mine the Required Trigger/Gate Parameters" , on page 413.
2. The gate is opened by a trigger event, which must be based on a power source.
Define the trigger as described in Chapter 7.7.1.4, "How to Configure a Triggered
Measurement" , on page 413. As the "Trigger Source" , use "IF Power" , "Video" or
"External" .
3. Define how long the gate is to remain open:
To measure the signal as long as the trigger level is exceeded, for example for one
or more pulses, define "Gate Mode" = "Level" .
To measure the signal for a certain time after a level is exceeded, for example dur-
ing a burst:
a) Define "Gate Mode" = "Edge" .
b) Define the time to measure for each gate: "Gate Length" .
4. To open the gate with a time delay, for example to ignore an overshoot, define a
"Gate Delay" .
5. Select "Gated Trigger" = "On" .
7.8 Adjusting Settings Automatically
Access : "Overview" > "Amplitude" / "Frequency" > "Auto Settings"
Adjusting Settings Automatically