Sigma LBA-708 Manuale Utente

 

Ultracal will become 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Ultracal operation was executed, are no longer in effect.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 operators change to the spatial acquisition settings.   The DISABLED condition will occur if you 

make changes to: 
 

•  The Hardware Zoom. 
•  The Hardware Pan location. 
•  The Camera Type or Resolution setting. 
•  The Camera Electronic Shutter setting. 
•  The Video Gain and/or Black Level settings. 

 

This menu item is only enabled when certain types of cameras are connected.  These cameras must be 

fitted with a remote controllable electronic shutter.  From versions 4.XX, only analog cameras with 
remotely controlled shutters, such as: Pulnix TM-745, TM-765, TM-6, and TM-7, will be supported.  In 

the future we intend to add additional camera types that feature electronically controlled exposure 

times, adjustable gain settings, and programmable electronic shutters. 

 

When this menu item is enabled it indicates that your camera selection is set for a camera with some 

type of remotely controllable shutter or exposure timing and that your Trigger Mode is set to CW.  If 

you click on this menu item the LBA-PC application will attempt to automatically set the camera 

shutter or exposure to a value appropriate for the amount of power incident upon your camera’s focal 

plane array.  The AutoExposure algorithm will start with the maximum exposure time and reduce 

the exposure until the peak fluence is less than 90% of the camera’s dynamic range.  If it reaches the 
shortest exposure time allowed by your camera and can not meet the above criteria, it will leave the 

exposure setting at this minimum value and request that you attenuate your laser using some external 

means.  I.e., either place additional ND filters into the laser beam path or reduce the output power of 

your laser source.  After attenuating your laser it may be a good idea to rerun the AutoExposure 

operation. 

With most any camera that has a programmable shutter or exposure, a change of the 

shutter/exposure setting will produce a change in the camera black level setting, and therefore may 

disable ultracal, which will cause the Ultracal indicator to turn red.  It is therefore recommended that 

any changes to the AutoExposure are followed by an Ultracal operation. 

Operator’s Manual 

 

LBA-PC 

 

Doc. No. 10654-001, Rev 4.10 

103