LBP2 User Guide Document No: 50306-001 Rev G 3/12/2020 Page 24
lasers the exposure control is only usable to split out single laser pulses. As a
result, the automatic control of the Exposure feature is not useful as a
traditional intensity change device. Thus, in triggered modes, the only
effective automatic control is the Gain control. The drawbacks of using this
control have already been pointed out. Thus, the benefits of the Auto features
in single pulse exposure triggered modes are somewhat limited.
Important: The Auto X mode will not adjust for a manual power/energy calibration and
thus cannot be relied upon to accurately track beam power/energy changes.
This mode is best used with an external power/energy meter source.
2.2.2.3 Frame Format
This control is used to select the formatting of the camera data frames.
Various cameras have greater or lesser features in this area. The cameras
that Newport uses with LBP2 have some degree of format control. The types
of controls appearing here are as follows:
Frame Format This dropdown control will reveal a
list of camera preset ROI (Region of Interest) and Binning formats that the
user can select from. These formats are normally centered in the camera
imager’s window and allow for quick modification of the camera settings.
Some formats may employ pixel binning that can speed up the camera imager
frame rate but preserve the field of view of the imager. Small ROI’s usually
result in higher camera frame rates.
Bits Per Pixel This control sets the camera
output format in number of bits per pixel. The lowest setting is 8, and the
highest is 16. The available settings are camera dependent.
Frame Rate in Hz Use this control to select
one of the currently available default camera frame rates. The available rates
will change based on the selected Frame Format.
2.2.2.4 Exposure|Gain|Black Level
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