YOKOGAWA FG420 - Page 107

93
IM FG410-01EN
Single-shotshuttlesweep
Sweep value
Frequency sweep example
Start value
Stop value
Sweep time
Sweep time
Trigger
j) Tooutputthewaveformonlyduringsweepexecution→Gatedsingle-shotsweep
Set [SwpMode] (sweep mode) on the 2nd page of the setting screen to [Gated] (gated single-shot).
This operation combines gated oscillation and sweep, with sweep execution in synchronization with a
trigger.
Since a trigger signal is required, set the trigger signal with [Trig] (trigger) on the 2nd page. For the
trigger setting procedure,

p.94 .
Oscillation start/stop phase
The oscillation start/stop phase setting is done with [Phase] (phase) on the 1st page of the setting
screen.
However, during phase sweep, the start phase setting is the oscillation start phase, and the stop
phase setting is the oscillation stop phase.
Stoplevel(normallysetto[Off])
To set the level while the oscillation is stopped separately from the phase, set [StpLvl] (stop
level) on the 3rd page of the setting screen to [On] (on) and set the level with a % value using the
amplitude full scale as reference. Normally, [Off] (off) is set. When [Off] is selected, the signal
level while oscillation is stopped is determined by the phase set in [Phase] on the 1st page of the
setting screen. For details on the stop level,

p.116 .
 Oscillationstopunit(normallysetto[Cycle](1cycle))
To stop oscillation in half-cycle units, set [OscStop] (oscillation stop unit) on the 3rd page of the
setting screen to [HalfCycle] (half cycle). Normally, set to [Cycle] (1 cycle). When [Cycle] (1
cycle) is set, whole integer cycle oscillation results.
When oscillation is stopped, it always stops either in 1-cycle or half-cycle units according to the
[OscStop] (oscillation stop unit) setting, and the oscillation time is usually longer than the sweep
time setting.
4.8 Sweep Setting and Manipulation