Capturedark ­ Store Dark Level - Feasa 3D User Manual

FEASA DISPLAY ANALYSER
FUNCTIONAL VERSION
Capture Mode
CaptureDark ­ Store Dark Level
Transmit Receive
capturedark OK
Description
This command instructs the Display Analyser to capture and store the ambient
Dark Level of the Display positioned in front of the Luminance Heads. The
Display must be powered off before the capturedark command is executed.
This command allows the Analyser to measure the ambient light and subtract
this value from Display measurements.
This command should be executed if the ambient light changes. If the Display
and Luminance Heads are enclosed in a dark chamber then this command
need only be executed one time.
In the case of a 10 channel unit the data for all 10 channels is captured
simultaneously and stored in internal memory of the Display Analyser. The data
is stored until the power is removed or another capturedark command is
issued. When completed the Analyser will transmit the character OK on the
receive line to the transmitting device (i.e. the PC).
Example:
The PC transmits capturedark to the Display Analyser and the Analyser sends
OK to the PC to acknowledge that the command is completed.
Capturedark
OK
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