![background image](http://html1.mh-extra.com/html/jai/ab-800ge/ab-800ge_user-manual_631429021.webp)
AM-800GE / AB-800GE
- 18 -
The following parameters of this auto iris control signal output can be changed.
Auto Iris Control Signal Output:
ON : The auto iris control can be connected with AGC and ASC as ALC function
OFF : The auto iris control is not connected with AGC and ASC.
Iris Reverse Gain:
ON : The auto iris control signal is multiplied by the inverse of AFE gain (VGA
gain). If ALC is used, select this one. Auto iris control signal is not affected
by AGC gain.
OFF: The auto iris control signal is not multiplied by the inverse of AFE gain (VGA
gain).
Iris State Control:
Video: Use the iris control in auto mode.
Close: Force the iris to close.
Open: Force the iris to open.
Iris Sync Level: Adjust the H sync level added to the video between 0 to 255.
Iris Control Gain:
0 – 255: Set a separate control gain for the auto iris control signal. If oscillation
occurs when the auto iris diaphragm reaches the set point, this setting
may reduce the phenomenon.
Iris Interpolate Gain (Note):
0 – 255: At frame rates below 20fps, the auto iris operation may appear “jumpy”
as it rapidly moves from one level to the next.
This function prevents this so-called “hunting” phenomenon by
interpolating new auto iris control levels between each frame, thereby
smoothing the rate of the auto iris changes.
Iris Calculate Ratio (Note):
20 – 160: This function compensates Iris Interpolate Gain to allow for the varying
diaphragm ranges of different auto iris lenses.
This can be helpful if the auto iris is not able to find the appropriate
point by hunting when operating at frame rates of less than 20fps.
Note:
These interpolated controls are calculated based on the “Gain Auto
Reference” value. If the system is operating with a frame rate of less than
20fps, the set point of the lens should match the value of “Gain Auto
Reference”, even if ALC is being controlled by only the auto iris. Also, when
using an auto iris lens with its own speed and level controls, it is
recommended that these controls first be adjusted on the lens before using
the camera controls above to avoid possible conflicts.
Summary of Contents for AB-800GE
Page 97: ...AM 800GE AB 800GE 94 b Image Format Control c Acquisition Control d Digital IO Control...
Page 98: ...AM 800GE AB 800GE 95 e Counter And Timer Control f Event Control...
Page 99: ...AM 800GE AB 800GE 96...
Page 100: ...AM 800GE AB 800GE 97 g Analog Control h LUT Control i Transport Layer Control...
Page 101: ...AM 800GE AB 800GE 98 j User Set Control k Action Control l JAI Custom Control...
Page 102: ...AM 800GE AB 800GE 99...