YOKOGAWA FG420 - Page 129

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IM FG410-01EN
f) Triggersettingsfortriggerburst
The trigger can be selected from internal trigger oscillator, external signal, manual trigger key
manipulation, and remote trigger manipulation.
Upon receipt of a trigger, the TRIG’D lamp next to the MAN TRIG key lights.
The trigger source is set with [Trig] (trigger) on the 2nd page of the setting screen.
 Triggersourcesetting
The trigger source can be chosen from [Int] (internal) and [Ext] (external).
When the trigger source is [Int] (internal), the trigger period can be set.
When the trigger source is [Ext] (external), the trigger polarity can be set.
If the trigger source is set to [Ext] (external), a TTL level trigger signal is input to the external
trigger input terminal (TRIG IN).
Usage of manualtriggerandremotetrigger
Manual trigger manipulation and remote trigger manipulation are always effective regardless of
the trigger source setting.
The
MAN TRIG
MAN TRIG key can be used for manual trigger manipulation.
Note that, in the case of the FG420, the MAN TRIG key works for the channel whose display is
active.
For details on the channel whose display is active,

p.42 .
To use only manual trigger manipulation and remote trigger manipulation as the trigger, set the
trigger source to [Ext] (external). Also, to prevent malfunction due to external noise at this time,
it is recommended to set the polarity to [Off].
Triggerdelaysetting
Set the trigger delay time with [TrigDly] (trigger delay) on the 2nd page of the setting screen.
Upon receipt of a trigger, oscillation starts following the lapse of the specified time. The trigger
delay time setting is valid both for internal and external. Set the trigger delay time for the internal
trigger source to 0. The trigger delay time setting is invalid for a manual trigger and a remote
trigger.
When the trigger delay time setting is zero, the delay within the unit is minimal, but the waveform
that is actually output contains a delay.

p.144
Following receipt of a trigger, no new trigger is accepted until the oscillation of the specified
mark wave number has been completed.
g) Tostarttriggerburst→Trigger
Upon receipt of a trigger, oscillation of the specified wave number is performed.
The trigger can be selected from internal trigger oscillator, external signal, manual trigger
manipulation, and remote trigger manipulation.
h) Tooutputburstsyncsignal→Syncoutputsetting
This setting is done with [SyncOut] (sync output) on the 2nd page of the setting screen. One of the
following two settings can be selected.
Signal synchronized with the reference phase of the waveform [Sync]
Signal synchronized with burst oscillation [BrstSync]
 When[Sync]isselected
A TTL level signal that rises at the reference phase of the waveform is output from the sync/sub-
output terminal.
4.9 Burst Setting and Manipulation