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Other Parameters
•
BLINKS to OFF: Number of times that front LED’s blink before target
shuts down after it loses the laser beam. One blink equals
approximately one second. The default is 30 seconds.
•
VERT SUM THRESHOLD: Sets the background light level at which
the target starts to shut down. By default, 1500 should be used. Only
used for
fixed beam mode
.
Click
UPLOAD
to program the parameters into the target memory.
Calibration Table
The Calibration Table upload feature of this Utility is intended for customers who wish to develop their
own in-house calibration system. Hamar Laser may, at our discretion, provide limited assistance
regarding customer calibration procedures for the targets, however most assistance is limited to
information regarding the structure of the calibration file.
Hamar Laser Calibration Method
The A-1519/A-1520 targets are calibrated using a proprietary, automated station designed by Hamar
Laser. The calibration station is comprised of a precision motorized linear stage, using an interferometer
as the position reference. Under computer control, the target is displaced from the highest position on the
internal sensor to the lowest position, at very small intervals.
The target “raw” position is then compared to the interferometer position reference. The difference
(error) is stored in a calibration table, uploaded to the target and stored in non-volatile memory. The
target firmware uses this internal table to correct the “raw” sensor position readings. The same type of
calibration station is used to verify the targets after the calibration table has been uploaded
