4.9 Burst Setting and Manipulation
111
IM FG410-01EN
number is set to an integer value.
[StpLvl] (stop level) on the 2nd page of the setting screen is normally set to [Off] (off).
A trigger is required for trigger burst. Refer to the following item.
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 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,
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.
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]
MAN TRIG
