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No.18S052-02
32/72
STC-MBS1242POE / STC-MCS1242POE
Product Specifications and User’s Guide
Exposure Timing with Positive Polarity Trigger Signal
Exposure Time
Trigger Signal
(Positive polarity)
Trigger signal with
camera internal delay
T1
T1
Tdelay
*Note 2
Debounce
*Note 1
Exposure Time
T1'
*Note3
Exposure Time T1’ = (CEILING (actual trigger width / 35 µseconds) x 35 µs 210 µs A
CEILING: Returns crossest number to be converted absolute value on multiple number of Reference value.
In other words, returns Quotient of di Remainder (Remainder = 0: 0, Remainder ≠ 0:1).
A: 2.792 µseconds
e.g.
Case: Trigger width 40 µseconds on STC-MCS1242POE
CEILING (40 µseconds / 35 µseconds = 1.142857)
Quotient of division: 1, Remainder: 0.142857
CEILING = 1 + 1 = 2
T1’ = 2 x 35 µs 210 µs 2.792 µseconds = 282.792 µseconds
Note 1: The trigger signal will be removed by filtering if active pulse width of input trigger signal is less than
“Line Debounce Time” setting time. Please input trigger signal has more than “Line Debounce Time” time
active pulse width trigger signal.
Note 2: Please refers “5.2.6 External Hardware Trigger Input Delay” for more details about “External hardware
trigger delay”.
Note 3: Please refers “5.2.6 External Hardware Trigger Input Delay” for shortest active pulse duration of trigger
signal.