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Chapter 15 Menus and Dialog Boxes 211
A/D 3152 tab page
This page only appears in the Experiment Setup Window if the controller is a V/ICCD or
a V/ICCD Control box and if a Data Translation DT3152 Frame Grabber has been
selected as the Frame Grabber type on the Hardware Setup V/ICCD Controller/Detector
tab page.
Note:
This selection should only be made if the 3152 Frame Grabber has, in fact, been
installed in the computer.
A frame grabber digitizes video that falls between the defined black level and white
level. Any signal below the black level is digitized to black and any that lies above the
white level is digitized to white. Voltages in between the two levels are digitized so that
they are evenly distributed throughout the range of the A/D converter.
The nominal white level is 1 V and the nominal black level is 0 V. The actual levels are
reported on the A/D DT3152 tab page if the Frame Grabber is installed. The nominal
levels can be changed by entering the new value directly in the
White Clamping Level
and
Black Clamping Level
text boxes or by using the associated spin buttons.
Control Buttons:
Acquire:
Clicking on Acquire initiates a data-collection run in which all data frames are
stored.
Focus:
Clicking on Focus initiates a data-collection run in which the data is not stored
until Start Storage is selected.
OK:
Click on OK to save the changes and close the Experiment Setup window without
initiating a data collection run.
A/D 3152 tab
page.