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11.
Other functions
11.1.
Basic functions
The AD-131GE is 2CCD camera based on a beam-splitter prism allowing precise separation
of the incoming light into two monochrome CCDs and achieves High S/N, High Frame Rate
and High Dynamic Range. The AD-131GE is equipped with two RJ-45 connectors in order to
interface via Gigabit Ethernet. It offers a choice of operating modes, including Sync,
Async, High S/N, High Dynamic Range 1, 2, and 3, High Frame Rate, and PIV. Supported
pixel formats include monochrome 8-bit, 10-bit and 12-bit .
The AD-131GE can operate in Continuous (free-run) mode or in triggered modes.
The variable partial scan mode provides higher frame rates at lower vertical resolution.
11.2.
2CCD optical assembly
The beam splitter prism incorporated in the AD-131GE separates the incoming light into two
parts encompassing the visible wavelengths from 400nm to 650nm. Half of the incoming light
is reflected off the prism's mirror coating and goes to the Camera #1 sensor. The other 50%
passes through the mirror and goes to the Camera #0 sensor.
The following shows the concept of this system.
11.3.
Electronic shutter
In the GenICam standard, Exposure Time (us) is defined as the exposure setting. This is used to
set the shutter speed in microseconds. This Time Absolute value is converted into the
programmable exposure value (PE) inside the camera and initiates the exposure.
Exposure time (RAW)
The exposure time can be set 1 LVAL(32.34μs) step. The setting range is from 0.4L to 982L.
If it is set in between 0L to 981L, the exposure time is added 0.4L over head. If 982L is set, the
shutter is OFF.
AD-131GE
Imager 1
( Transmitted )
Imager 2
(Reflected )
Fig.55
Conceptual diagram for 2CCD prism optics
AD-131GE spectral transmittance (with Sensor)
100
90
80
70
60
50
40
30
20
10
0
400
500
600
wavelength (nm)
73
700
800
900
Visible1
Visible2
1000
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