No.18S075-00
19/48
STC-OSB250CL
Product Specifications
and User’s Guide
8.3
Edge preset trigger mode
The camera exposure starts by trigger signal.
In this trigger mode with positive trigger polarity, camera exposure starts at rising edge of trigger signal.
The exposure time sets by preset exposure time.
In this trigger mode with negative trigger polarity, camera exposure starts at falling edge of trigger signal.
The exposure time sets by preset exposure time.
The exposure start will be delay about 1.1
μseconds by filtering system on camera.
8.3.1
The exposure timing with positive polarity
Exposure Time
Image Out
Trigger Signal
(Positive)
FVAL
* Note.1
Exposure
TIme
* Note.1: The exposure time sets by preset exposure time.
When setting shorter than 21
μseconds for exposure time, 21 μseconds set to exposure time
automatically.
* Note.2: When active pulse duration of trigger signal is shorter than 1.1
μseconds, trigger signal is discard
by filtering system on camera.
It is necessary to supply more than 1.1
μseconds active pulse duration of trigger signal to
camera.
* Note.3: The trigger signal is discard when trigger signal supplies shorter than below minimum frame
interval time from previous supplied trigger signal.
Minimum frame interval:
10TAP, 85.00 MHz:
31.397 mseconds
10TAP, 66.11 MHz:
40.515 mseconds
8TAP, 85.00 MHz:
39.377 mseconds
8TAP, 66.11 MHz:
50.206 mseconds
However, when detecting signal state change from low to high (for positive polarity) at minimum
frame interval passed from previous trigger signal, exposing by trigger signal starts.
Содержание STC-OSB250CL
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