Manualshelf

User guide

ManualsBrandsSigma ManualsDigital CameraLBA-400
81828384858687888990
Page 84 Document No: 11294 LBA-USB User Guide
2.6 Ultracal! Menu Action Item
Click Ultracal! to begin an automatic camera calibration cycle. An Ultracal! cycle
generates a calibration frame that will be used to preprocess all data frames newly
acquired from the camera.
Note: The Ultracal! process is only applied to newly acquired data frames; it does not
apply to data that was acquired prior to an Ultracal! execution, nor is it applied to
data from a data file. While executing a Post Processing operation, Ultracal! will
be turned off at the start of Post Processing, and remain off after its completion.
The status of the Ultracal! condition is visible in the Ultracal!
enunciator and at the
bottom of the main display screen.
The Ultracal! enunciator provides an indication of its status:
Gray OFF – Ultracal! processing is turned off.
Green OPERATING – Ultracal! operation was successful and is operating.
Red DISABLED – Ultracal! processing has been disabled because something caused
the calibration to become invalid.
Important: Though the Ultracal! enunciator may appear green, all may not necessarily
be well. Camera baselines drift with temperature and over time. Therefore,
we suggest performing another Ultracal! just prior to collecting important data.
2.6.1 How to perform an Ultracal!
Follow these steps to perform an Ultracal!:
1. Block the laser beam from the camera.
2. Click the Ultracal! menu action item.
3. After a few seconds, observe that the Ultracal! enunciator turns green.
4. Unblock the laser beam from the camera.
2.6.2 What Disables an Ultracal!?
An Ultracal! becomes disabled if certain data collection conditions that were in
effect when the Ultracal! operation was executed are no longer in effect. In all
cases, these conditions are the result of an operator’s change to the spatial
acquisition settings. The disabled condition will occur when changes are made
to:
The Frame Size, Frame Format or Region of Interest (ROI).
The camera Brightness, Gain or Shutter settings.
The number of bits per pixel setting.