C13440-20CU / C13440-20CU01 Instruction manual_Ver.1.3
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11-1-5 CONFIGURING EXPOSURE TIME
The exposure time setting can be done by the units of seconds.
The actual exposure time setting is defined by the following formula, and the camera automatically
calculates a longer and closest value from the specified exposure time setting.
(1) Standard scan
Exp1 = 1 ms to 10 s (38.96 µs to 10 s with sub-array setting) (input in units of seconds)
Exp2 = Exp1 ÷ 9.744 36 µs (round up to integer)
Calculation formula
9.744 36 µs × Exp2
(2) Slow scan
Exp1 = 3 ms to 10 s (129.99 µs to 10 s with sub-array setting) (input in units of seconds)
Exp2 = Exp1 ÷ 32.4812 µs (round up to integer)
Calculation formula
32.4812 µs × Exp2
Available setting range of the exposure time is the following.
Operation modes
Setting range
Standard scan
Slow scan
Free running mode
1 ms to 10 s
3 ms to 10 s
Free running mode (at Sub-array)
38.96 µs* to 10 s
129.99 µs* to 10 s
External trigger mode
1 ms to 10 s
3 ms to 10 s
*
38.96 µs (Standard scan) and 129.99 µs (Slow scan) is the minimum exposure time when sub-array is set to 8 lines vertically symmetric
(4 lines in top half and 4 lines in bottom half) with respect to the horizontally center axis. The minimum exposure time vary depend on
vertical line number of sub-array setting.