Electronic Shutter - JAI CM-030PMCL-RH User Manual

6.1.2.

Electronic Shutter

CM-0303PMCL-RH allows selecting shutter speed in two ways; preset shutter (10 fixed steps)
and programmable exposure (in 511 line period, LVAL, increments).
Preset Shutter
The following shutter speeds can be selected by command SH=0 through SH=9.
OFF (1/120), 1/250, 1/500, 1/1000, 1/2000, 1/4000, 1/8000, 1/10000, 1/15000, 1/30000
seconds
Programmable Exposure (PE)
The exposure time can be programmed in 16.24µs (LVAL period) increments. The range is
from 2 LVAL to 511 LVAL.
Minimum exposure time 2L
16.24 µs x 2(L) = 32.48 µs
In binning mode:
Minimum Exposure time 2L
20.069 µs x 2(L) = 40.138 µs
Preset shutter time for each output mode
The preset shutter value is converted to the programmable value (PE) inside the camera.
Accordingly, there is a slight difference between the preset shutter value and the actual
exposure time. Please refer the following table.
Preset
Shutter
Value[s]
Off(1/120)
1/250
1/500
1/1000
1/2000
1/4000
1/8000
1/10000
1/15000
1/30000
CM-030PMCL-RH
Exposure
lines
[Line]
FULL (µs)
511
246
123
62
31
15
8
6
4
2
Maximum exposure time 511L
16.24 µs x 511 (L) ≈ 8.299 ms
Maximum exposure time 257L
20.069 µs x 257 (L) ≈ 5.158 ms
Actual exposure
VBinning(µs)
8299 5158
3995 4937
1998 2468
1007 1244
503 622
244 301
130 161
97.4 120
65 80.3
32.5 40.1
10