Configuring Exposure Time - Hamamatsu Photonics C11440-22CU Instruction Manual

10-2-3 CONFIGURING EXPOSURE TIME

The exposure time setting can be done by absolute value. The actual exposure time setting is
defined by the following formula, and the camera automatically calculates a larger and closest
value from the specified exposure time setting.
• The Exp1 values must be input to the calculation formula below in units of seconds.
(1) Standard scan
Exp1 = 1 ms to 10 s (at sub-array 38.96 µs to 10 s)
Exp2 = Exp1 × 10
(2) Slow scan
Exp1 = 3 ms to 10 s (at sub-array 129.99 µs to 10 s)
Exp2 = Exp1 × 10
Available setting range of the exposure time is the following.
Free running mode
Free running mode (at Sub-array)
External trigger mode
* 38.96 µs (Standard scan) and 129.99 µs (Slow scan) is the minimum exposure time
Note
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.
C11440-22CU/C11440-22CU01 Instruction manual_Ver.1.4
6
÷ 9.74436 µs (round up at decimal point)
9.744 36 µs × Exp2
6
÷ 32.4812 µs (round up at decimal point)
32.4812 µs × Exp2
Standard scan
1 ms to 10 s
38.96 µs* to 10 s 129.99 µs to 10 s
1 ms to 10 s
Slow scan
3 ms to 10 s
3 ms to 10 s
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