AD-081CL
- 14 -
7.1.9 Electronic shutter (Commands SM1,SM2,SH1,SH2,PE1,PE2)
The AD-081CL has two shutter modes. One is an 11-step pre-set shutter and the other is a
programmable exposure mode which can be controlled from 0.5L to 792L in one-line
increments.
Pre-set Shutter (SH1 / SH2)
The setting command is from SH1/SH2=0(OFF) to SH1/SH2=11
（
1/50,000
）
OFF(1/30),1/60,1/100,1/120,1/250,1/500,1/1000,1/2,000,1/4,000,1/10,000,1/16,000,1/50,0
00
Programmable Exposure (PE1 / PE2)
The setting command is PE1/PE2 and the exposure time can be controlled in 1 LVAL unit
(42.07µs).
The range is from 0.5LVAL to 792LVAL. (In case of vertical binning, 1 LVAL equals 50.96µs.)
The shutter speed for each operation mode is shown below.
Mode
Read Out
Minimum shutter speed
Maximum shutter speed
Continuous
Full, Partial
20µs at PE=0(1/50,000)
1 Frame
V Binning
30µs at PE=0(1/50,000)
Pre-Select
Full, Partial
20µs at PE=0(1/50,000)
792 L
V Binning
30µs at PE=0(1/50,000)
Pulse Width Full, Partial
42.07µsx2L+ 20µs=
104.14µs
（≒
1/10,000s
）
(Note)
60 Frames ( 2 seconds )
V Binning
50.96µsx2L+ 20µs=
131.92µs
（≒
1/8,000s
）
(Note)
Note: In Pulse Width mode, the minimum trigger pulse width requires more than 2LVAL.
Exposure time calculation
Mode
Equality
Full scan
= PE (line) x 1L (42.07µs) + 20 µs (PE= 0 to 791)
1/2 Partial scan
= PE (line) x 1L (42.07µs) + 20 µs (PE= 0 to 491)
1/4 Partial scan
= PE (line) x 1L (42.07µs) + 20 µs (PE= 0 to 347)
1/8 Partial scan
= PE (line) x 1L (42.07µs) + 20 µs (PE= 0 to 275)
Vertical binning
= PE (line) x 1L (50.96µs) + 30 µs (PE= 0 to 395)
