Photron FASTCAM SA-Z, Hardware Manual

Page: 47 / 119

•
The Image Trigger function responds when the level of output image signal (averaged value within
the field set in the above AREA step) is on the line [1] or [2].
When the output image signal level (averaged value within the field set in the above AREA step) is
in the position [1] or [2], the system responds as follows:
•
When the output level is in position [1]:
The system does not activate trigger because the level is within the predetermined range.
•
When the output level is in position [2]:
The output level must first return to position [1] and then the system activates the trigger at the
moment the level hits or goes beyond position [2].
•
If the level moves [1]
→[2]→[1]→[2]→[1]→[2], the system responds every time the level goes
from [1] to [2]. In this example, trigger is activated three times.
[1]
[2]
[2]
+ RANGE
REFERENCE
(0
～
1023)
- RANGE
Trigger operation is carried out
when it separates from this range.
35 FASTCAM SA-Z Hardware Manual