31
APPENDIX B: GAMMA USER TABLE UPDATES
The format of the LUT table defi nition fi le is standard CSV (Comma Separated
Values). Each line contains Red, Green and Blue values separate by a comma
(”,”) between 0 and 1023. A CSV fi le must contain exactly 1024 lines:
1023,0,0 (Line 1)
1023,0,0
1023,0,0
1023,0,0
1023,0,0
…
...
1023,0,0 (Line 1024)
Gamma LUT File Format (CSV)
Programming the Gamma User Table
The Gamma Look Up Table (LUT) can be programmed using the GefenUpdater.
exe utility program used to perform software updates. To do this, fi rst prepare a
CSV data fi le with the extension .csv (see the CSV fi le / LUT fi le format defi nition
immediately below). When the CSV fi le is ready, create a batch fi le in Microsoft
Notepad with a single line in it as follows: “GefenUpdater GAMMA FileName.csv”.
Save the fi le as “UpdateGamma.bat”. Power up the Scaler, connect the USB port
to the computer and then double-click on the .bat fi le you have just created to
begin the update process.
