Hamamatsu ORCA-Flash4.0 LT3, Инструкция по эксплуатации

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ORCA-Flash4.0 LT3 Digital CMOS camera C11440-42U40 Instruction manual_Ver.1.1
24
9-2-5 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.
(1) Standard 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 at decimal point)
Calculation formula 32.4812 µs × Exp2
(2) Rapid rolling
Exp1 = 1 ms to 10 s (40 µs to 10 s with sub-array setting) (input in units of seconds)
Exp2 = Exp1 ÷ 10 µs (round up at decimal point)
Calculation formula 10 µs × Exp2
Available setting range of the exposure time is the following.
Free running mode
3 ms to 10 s (Standard scan)
1 ms to 10 s (Rapid rolling)
Free running mode (at Sub-array)
129.99 µs* to 10 s (Standard scan)
40 µs* to 10 s (Rapid rolling)
External trigger mode
3 ms to 10 s (Standard scan)
1 ms to 10 s (Rapid rolling)
Note
* 129.99 µs (Standard scan) and 40 µs (Rapid
rolling
) 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 varies
depending on vertical line number of sub-array setting.