C13440-20CU / C13440-20CU01 Instruction manual_Ver.1.3
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11-3-4 CONFIGURING EXPOSURE TIME
The exposure time can be set independently for the top and bottom half areas. 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 2 s (38.96 µs to 2 s with sub-array setting) (input in units of seconds to the calculation formula)
Exp2 = Exp1÷9.744 36 µs (round up to integer) (input in units of seconds to the calculation formula)
Calculation formula
9.744 36 µs × Exp2
(2) Slow scan
Exp1 = 3 ms to 6 s (129.99 µs to 6 s with sub-array setting) (input in units of seconds to the calculation
formula)
Exp2 = Exp1÷32.4812 µs (round up to integer) (input in units of seconds to the calculation formula)
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 2 s
3 ms to 6 s
Free running mode (at Sub-array)
38.96 µs* to 2 s
---
The same exposure time is
set for the top and bottom half
areas when the exposure
time is 1 ms or shorter.
129.99 µs* to 6 s
---
The same exposure time is
set for the top and bottom half
areas when the exposure
time is 3 ms or shorter.
External trigger mode
(The exposure time can be set independently
for the top and bottom half areas with Edge
trigger mode or start trigger mode.)
1 ms to 2 s
3 ms to 6 s
*
38.96 µs (Standard scan) and 129.99 µs (Slow scan) is the minimum exposure time when sub-array is set to vertical 4 lines. The
minimum exposure time vary depend on vertical line number of sub-array setting.
