Common measurement settings
R&S
®
FSVA3000/ R&S
®
FSV3000
490
User Manual 1178.8520.02 ─ 08
Offset > 0:
Start of the sweep is delayed
Offset < 0:
Sweep starts earlier (pretrigger)
Only possible for zero span (e.g. I/Q Analyzer application) and gated trigger switched off
Maximum allowed range limited by the sweep time:
Pretrigger
max
= sweep time
max
For the "Time" trigger source, this function is not available.
Remote command:
TRIGger[:SEQuence]:HOLDoff[:TIME]
Hysteresis
Defines the distance in dB to the trigger level that the trigger source must exceed
before a trigger event occurs. Setting a hysteresis avoids unwanted trigger events
caused by noise oscillation around the trigger level.
This setting is only available for "IF Power" trigger sources. The range of the value is
between 3
dB and 50
dB with a step width of 1
dB.
For more information, see
Remote command:
TRIGger[:SEQuence]:IFPower:HYSTeresis
Trigger Holdoff
Defines the minimum time (in seconds) that must pass between two trigger events.
Trigger events that occur during the holdoff time are ignored.
For more information, see
Remote command:
TRIGger[:SEQuence]:IFPower:HOLDoff
Slope
For all trigger sources except time, you can define whether triggering occurs when the
signal rises to the trigger level or falls down to it.
For gated measurements in "Edge" mode, the slope also defines whether the gate
starts on a falling or rising edge.
Remote command:
6.6.1.3
How to determine the required trigger/gate parameters
1. In the "Trigger And Gate" dialog box, switch on "Show Preview".
A zero span measurement for the currently defined center frequency is displayed.
2. Set the "Frequency", "RBW" and "Sweep Time" such that the relevant part of the
signal is displayed, for example a complete burst.
Trigger and gate configuration
