GE AMX-II Service Manual page 19

GENERAL ELECTRIC MEDICAL SYSTEMS AMX-il X-RAY UNIT
1-981 . OM A0654E
A Measuring Tape is provided on the center line of the bottom of the collimator housing. It is calibrated in
inches and centimeters for measuring source-to-image distances. The correct source-to-image distance is
indicated by having the bottom of the collimator housing even with the marking on the tape which
corresponds to the desired source-to-image distance. For accurate measurements, have the tape tab on
the end of the tape straight down, not perpendicular to the tape.
Parallel tracks on the bottom of the collimator housing accept an optional extension cylinder. Slide the
extension cylinder into the tracks from the front of the collimator until the cylinder latch snaps into the
slot on the right track. Press the latch to release the cylinder for removal. The added weight of the extension
cylinder will affect the counterbalance of the vertical column. Lock the vertical arm when installing or
removing the extension cylinder and apply extra caution when positioning the unit with the extension
cylinder installed.