GE Senographe DS Manual page 753

GE Healthcare
Revision 1
this adjustment).
Measured lumniance
(on white level square)
9. Perform a Monitor backlight adjustment, as follows:
a. Stay in the Brightness/Contrast menu, and keep pressing the Key1 button until Backlight is
selected.
b. With the luminance meter positioned on the central white level square of the SMPTE pattern (see
the image in section
luminance of the white level meets the target luminance of 400 cd/m² ±10 cd/m².
10. Perform a grey-level visibility check on the SMPTE pattern, by checking that:
• All the grey levels are visible
• The "5%" square remains visible compared to the 0% square.
• The "95%" square is visible compared to the 100% square.
If you do not have these results, repeat the calibration steps
11. Keep pressing the Key4 button until Accept changes is selected, then press the Key2 button to exit
and save the settings.
JC-ELE-A-043.fm
Service Information and Procedures Class A 2385072-16-8EN
Key2/Key3 buttons to find limit where
measured liminance is at the limit be-
tween not changing and increasing.
Key2
Increasing contrast
(Inreasing value displayed on Monitor OSD)
8-4), use the Key2/Key3 buttons to adjust the Backlight value so that the
Page no. 753
Job Card ELE A043 - AWS Monitor Calibration
2 to 9.
Senographe DS
Chapter 7