MTR 221 ACS - MTR 221 ACS DHHS
MANUALE ISTRUZIONI / INSTRUCTION MANUAL
C
ALIBRATION
37
Model R 221 ACS - R 221 ACS DHHS
MTR
2
21
ACS
-
MTR
2
21
AC
S DHH
S - Cali
bration
• Place the test film on the face of the cassette over the white paper or repeat exposure on
the flat panel.
• Place the cassette in the position originally marked.
• Check the correct position of the film or the X-ray field on the flat panel by the shadows
cast by the copper strips.
• Using the images of the collimator shutters as the references for the shape and size of the
X-ray field, adjust the light field to match.
• If adjustment is necessary, adjust the travel of the light source. All procedures can be found
in
L
IGHT
F
IELD
A
DJUSTMENTS
in this chapter.
L
IGHT
F
IELD
A
DJUSTMENT
Vertical Alignment
• Remove the part of the cover necessary to access the screws, see Chapter -
C
OVER
R
EMOVAL
.
• If adjustment is required loosen the two screws
C
holding the light support.
• If the light-field is smaller than the X-ray field, move away the light source by adjusting
screw
D
.
• If the light-field is bigger than the X-ray field, move the light source closer by adjusting
screws
D
.
• Tighten the two screws
C
. See
Fig. Light Field Adjustment
Longitudinal Alignment (Long)
• Remove part of the cover, see Chapter -
C
OVER
R
EMOVAL
.
• If the light-field needs to be moved laterally, loosen (not remove) the fixing screws
A.
• Use screw
B
to adjust transversely.
• When calibration is terminated, lock the screws
A.
See
Fig. Light Field Adjustment
W
ARNING
DO
NOT
TOUCH
THE
DISSIPATER
WITH
YOUR
HANDS
;
IT
COULD
BE
HOT
AND
CAUSE
SEVERE
BURNS
.
