GE Brivo OEC 715 - Shading Correction Check and Calibration

Brivo OEC 715/785/865 Mobile C-Arm X-Ray Product Service Manual
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b. Disconnect Camera Cables.
c. Reinstall the I.I. Power Supply and connect cables between power supply and I.I.
d. Install counter weight.
e. Connect Camera Head Cable, and make sure to tighten the securing screw.
f. Assemble the I.I. cover.
g. Power on the system.
Ensure the cable tightly connect to the I.I. Power Supply. Virtual connection will lead to no
image or image vibration in Fluoro.
4.6.9. Shading Correction Check and Calibration
Shading Correction Calibration Check:
1. Set to Normal mode, Auto Technique On.
2. Take a Shot.
3. Turn on the Automatic Brightness& Contrast.
4. Keep the brightness level and manually increase Contrast Level to see well on Brightness
uniformity. Adjust the brightness level if necessary.
5. Pass if you see the brightness uniformity is good enough. For example the 1st image shows the
good brightness uniformity, and the 2nd image, 3rd image shows the brightness uniformity is not
good.
1
st
image(good example)
2
nd
image (Margin is darker
than center ) brightness
3
rd
image (brightness of
margin is brighter than
center)
6. If you fail in step 5, need perform Shading Correction Calibration.
Shading Correction Calibration:
1. Before calibration, make sure there is no object in the image field, and the C-arm position is up-
down position with II vertically above tube.