Triggering the Sweep – TRIG Key R&S FSL
1300.2519.12 4.34 E-11
Trg / Gate Level
Opens an edit dialog box to enter the trigger / gate level. The gate–related settings are only
available with option Gated Sweep, R&S FSL–B8. For details see also "Trigger mode overview"
on page 4.31 and "To use gated sweep operation (option Gated Sweep, B8)" on page 4.29.
In the Time Trigger mode, this softkey is not available.
Remote: TRIG:LEV:VID 50PCT
Remote: TRIG:LEV:IFP –30DBM
Trg / Gate Polarity Pos/Neg
Sets the polarity of the trigger / gate source. The gate–related settings are only available with
option Gated Sweep, R&S FSL–B8.
The sweep starts after a positive or negative edge of the trigger signal. The default setting is
Pos. The setting applies to all modes with the exception of the Free Run mode.
level triggering
In the setting Pos the sweep is stopped by the logic ´0´ signal and
restarted by the logical ´1´ signal after the gate delay time has elapsed.
edge triggering The sweep is continued on a ´0´ to ´1´ transition for the gate length
duration after the gate delay time has elapsed.
In the Time Trigger mode, this softkey is not available.
For details also see "To use gated sweep operation (option Gated Sweep, B8)" on page 4.29.
Remote: TRIG:SLOP POS
Remote: SWE:EGAT:POL POS
Trigger Offset
Opens an edit dialog box to enter the time offset between the trigger signal and the start of the
sweep. The time may be entered in multiples of 125 ns in the range –100 s to 100 s (default
0 s).
offset > 0: start of the sweep is delayed
offset < 0: sweep starts earlier (pre–trigger)
only possible for span = 0 and gated trigger switched off
not possible if RMS or average detector activated
maximum allowed range and the maximum resolution limited by the sweep time:
range
max
= – 499/500 x sweep time
resolution
max
= sweep time/500
Note: For the option TV Trigger, B6 (available from firmware version 1.10), the allowed offset ranges
from –50 Bs to +50 Bs. If the trigger source is changed to TV trigger and the set trigger offset is
out of range, the trigger offset is adopted to the closest value allowed.
In the External or IF Power trigger mode, a common input signal is used for both trigger and
gate. Therefore changes to the gate delay will affect the trigger delay (trigger offset) as well.
In the Time Trigger mode, this softkey is not available.
Remote: TRIG:HOLD 10US
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