Pco dicam C1, Руководство пользователя

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6 TIMING PCO.DICAM C1
6.2 DOUBLE IMAGE MODE
With this mode it is possible to acquire two consecutive images with
a fully configurable interframing time (minimum 300 ns / 500 ns
depending on pco.dicam model).
Both, the duration of exposure 1 and exposure 2 are independently
selectable.
Due to timing constraints of the on-chip image sensor control, the
frame rate for
Double Images
at full resolution and exposure times in
the ns / µs range is reduced to a quarter of the possible frame rate in
Single Image mode.
The functional principle of the double image mode is explained on the
basis of the following timing diagram.
Note that using double image mode with a P43 phosphor equipped
image intensifier requires interframing times of > 1ms.
Timing Diagram
Arm Signal
The arming signal at the BNC Arm input connector (see 8.3 , A1.3 ,
A2.4 ) is used to initialize the camera to a double image ready to
record state. This rising edge signal is always needed at least 9.5 ms
before an exposure trigger signal for a double image can be
accepted. Due to the dark current, it is recommended to use <100
ms "arm" time, there is no fixed limit.
Unit Time
Arm 9.5 ms … < 100 ms
NOTICE
2 3 1 4
1 2
3 4