| Functionality | 31
Figure 29: Timing diagram for the burst trigger mode
The burst trigger signal can be configured to be active high or active low. When the frequency of the incoming burst
triggers is higher than the duration of the programmed burst sequence, then some trigger pulses will be missed. A
missed burst trigger counter counts these events. This counter can be read out by the user.
The timing diagram of the burst trigger mode is shown in the Timing diagram for the burst trigger mode figure. The
timing from the "external trigger pulse input" to the "trigger pulse internal camera control" is equal to the timing in
the figure Timing diagram for the pulse width controlled exposure time above. This trigger pulse then starts after
a user configurable burst trigger delay time t
burst−trigger−delay
the internal burst engine, which generates an internal
triggers for the shutter and strobe control. A user configurable value defines the time t
burst−period−time
between two
acquisitions.
Software trigger
The software trigger enables to emulate an external trigger pulse by the camera software through the serial data
interface. It works with both burst mode enabled and disabled. As soon as it is performed via the camera software, it
will start the image acquisition(s), depending on the usage of the burst mode and the burst configuration. The trigger
mode must be set to Interface Trigger or I/O Trigger.
Strobe output
The strobe output is an opto-isolated output located on the power supply connector that can be used to trigger a
strobe. The strobe output can be used both in free-running and in trigger mode. There is a programmable delay
available to adjust the strobe pulse to your application.
All rights reserved - Specim, Spectral Imaging Oy Ltd.
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