GE Senographe DS, Manual

Page: 740 / 1810

Chapter 7 Page no. 740
JC-ELE-A-043.fm
GE Healthcare Senographe DS
Revision 1 Service Information and Procedures Class A 2385072-16-8EN
Job Card ELE A043 - AWS Monitor Calibration
Brightness/Contrast is selected, and press
the UP button
to enter the RGB menu.
The RGB menu appears.
4. Perform a Monitor brightness adjustment, as follows:
a. Stay in the RGB menu, and keep pressing the MENU button until Brightness is selected.
b. With the luminance meter positioned on the central black level square of the SMPTE pattern (see
the image in section 7-4 ), use the DOWN button to decrease the Brightness value until the lumi-
nance measured stops changing. Then, use the UP / DOWN buttons to verify that the luminance
measured is at the limit between not changing and decreasing (see the image below which illus-
trates this adjustment).
5. Perform a Monitor contrast adjustment, as follows:
a. Stay in the RGB menu, and keep pressing the MENU button until Contrast is selected.
b. With the luminance meter positioned on the central white level square of the SMPTE pattern (see
the image in section 7-4 ), use the UP button to adjust the Contrast value until the luminance mea-
sured stops changing. Then use the UP/DOWN buttons to verify that the luminance measured is
at the limit between not changing and increasing (see the image below which illustrates this
Measured lumniance
(on black level square)
Decreasing brightness
(Brightness value displayed on Monitor OSD)
Down
Up/Down buttons to find limit where
measured liminance is at the limit be-
tween not changing and decreasing.