YOKOGAWA FG400, User Manual

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108
4.
BASIC OPERATION
IM FG410-01EN
f) To start auto burst → Automatically starts
When, in the auto burst mode, the mode is set to the burst oscillation mode, burst starts
automatically.
However, if the burst setting is improper, burst oscillation will not start. ([Conflict!] is
displayed in the top right part of the screen.) When the [?] soft key appearing at the left end
is pressed, a message about the inappropriate setting is displayed. Once the setting has
been changed to an appropriate setting, burst oscillation starts.
g) Stopping auto burst
→
Not possible
Oscillation cannot be stopped in the auto burst mode as is.
To stop oscillation, set [BrstMode] (burst mode) on the 2nd page of the setting screen to a
setting other than [Auto] (auto), and then set so that no trigger or gate signal is input.
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111
To set continuous oscillation, change [Mode] (oscillation mode) to [Continuous].
h) To output burst sync signal: Sync output setting
Set burst sync signal 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.
■ When [BrstSync] is selected
A TTL level signal synchronized with the burst oscillation is output from the sync/sub-
output terminal. As shown in the following figure, this signal is low during oscillation and
high during oscillation stop.
When the signal during burst is observed with an oscilloscope, it can be used as the trigger
signal for the oscilloscope.
i) Usage of stop level
The level when oscillation is stopped is normally set with the oscillation start/stop phase,
but it can also be set independently from that with a proportion of the amplitude full scale.
Set [StpLvl] (stop level) on the 2nd page of the setting screen to [On] and set the level with a
% value.
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Oscillation Stop Oscillation Stop
Burst sync signal
Output signal