Photron FASTCAM SA-Z, Hardware Manual

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The exposure starts at the rising edge of the EXPOSE POS signal (or the falling edge of the
EXPOSE NEG signal). The exact exposure end point is on the preceding of the falling edge of the
EXPOSE POS signal in the range of maximum 1.11 micro seconds from the falling edge (referred to
below as exposure uncertain interval). The position of the point varies according to the integral of
the quantity of light input on the exposure indefinite interval. The relation between the light input and
the output of the camera is non-liner during the exposure uncertain interval. The red diagonal areas
on the following timing chart show the exposure uncertain intervals.
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The unicertain interval
⊿
t deends on a mode setup as a following table.
Setup uncertain intervals
20K mode is ON Approx. 694nsec
20K mode is ON
with a frame rate in the following table
Approx. 198nsec
20K mode is OFF Approx. 1.11usec
Resolution
(Horizon)
Resolution (Vertical)
64 56 48 40
1,024 over 224,001 fps over 240,001 fps over 262,501 fps over 300,001 fps
896 over 240,001 fps over 262,501 fps over 288,001 fps over 315,001 fps
768 over 262,501 fps over 288,001 fps over 315,001 fps over 350,001 fps
640 over 300,001 fps over 315,001 fps over 350,001 fps over 360,001 fps
512 over 336,001 fps over 360,001 fps over 360,001 fps over 400,001 fps
384 over 360,001 fps over 400,001 fps over 400,001 fps -
256 over 400,001 fps over 450,001 fps - -
128 - - - -
Resolution
(Horizon)
Resolution (Vertical)
32 24 16 8
1,024 over 336,001 fps over 360,001 fps over 450,001 fps -
896 over 360,001 fps over 400,001 fps - -
768 over 360,001 fps over 450,001 fps - -
640 over 400,001 fps - - -
512 over 450,001 fps - - -
384 - - - -
256 - - - -
128 - - - -
29 FASTCAM SA-Z Hardware Manual