CM-200GE/CM-200GE-RA/CB-200GE/CB-200GE-RA
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9. Functions and operations
9.1. Basic functions
The CM-200GE/CM-200GE-RA and CB-200GE/CB-200GE-RA cameras are progressive scan cameras
with 10 or 8-bit video output in Gigabit Ethernet. An analogue iris video signal (DIP switch select)
can be used for controlling auto-iris lenses.
The camera has 2/3, 1/2, 1/4 or 1/8 partial scanning for faster frame rates. Vertical binning is
also available.
The camera can operate in continuous mode as well as in 5 triggered modes:
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Edge Pre-select (EPS)
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Pulse width control (PWC)
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Reset continuous trigger mode (RCT)
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Sequential trigger (EPS)
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Delayed readout (EPS,PWC)
Depending on the timing of the trigger input in relationship to FVAL (camera internal Frame valid
clock), the start of exposure can be immediate (no-delay, LVAL asynchronous) or delayed until
next LVAL (LVAL synchronous).
In the following section the functions are described in detail.
9.2. Electronic Shutter
In the GenICam SFNC interface, the electronic shutter is set by Exposure time (microseconds). The
traditional JAI method for shutter setting can also be used including JAI Shutter Mode, JAI Preset
Shutter, JAI Exposure Time Raw and JAI Exposure Time (us). If setting is done using the SFNC
method, these settings are automatically reflected in the traditional JAI settings area.
Preset Shutter
10 preset shutter steps are available: OFF (1/25); 1/60, 1/100; 1/250; 1/500; 1/1,000; 1/2,000;
1/4,000; 1/8,000; 1/10,000 sec.
Programmable Shutter
It is possible to set the shutter speed in the range of 2L to 1251L by 1L unit, in case of Full Frame
operation. When 1251L is set, it is the equivalent of “OFF (1/25)“ or 40.032ms.
Pulse Width Control
With this mode selected the exposure time is controlled by the width of the trigger pulse. The
minimum trigger pulse width is equal to 2L (64µs)
Minimum Shutter Time 2L
Maximum Shutter Time
Normal
32µs(1L) * 2L = 64µs
32µs * 1251L≈ 1 Frame(40.032ms)
V Binning
35.846µs * 2L = 71.692µs
35.846µs * 627L ≈ 22.475ms
