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14 Checking the AES (Automatic Exposure Selection)
1.
Attach test block vertically
5.
X-RAY
S.
26
64
kV
I6
mA
8.
S23
14.2
Perform phantom exposure
1.
Attach special test block delivered as part of this unit
to bottom of secondary collimator with adhesive tape.
Check that test block is exactly vertical.
2.
Insert a loaded film cassette until it locks in place.
Details see Operating Instructions.
3.
On diaphragm wheel, swing in PAN 1 diaphragm.
•
Unit must not be irradiated by a striong light source.
4.
Remove any bite blocks from holder.
•
The film density switch on Multitimer must be in posi-
tion 03!
•
Prepare unit for exposure, see Operating Instructions.
•
Ring must be in start position.
28
2.
Given AES test values
X-RAY
04
03
kV
66
mA
8.
7.
S23
Example 3.66V
6.
13x
5.
ATTENTION
Release a phantom exposure and hold pressed until radia-
tion switches off (app. 1 s).
6.
Then check displays on Multitimer.
Program display: test step (10 steps in total)
kV/mA display: AGC voltage value (10 test values)
Press the "+" button (program selection) a total of 13
times.
1 - 10 :Test values
11:
Black-level switch (e.g. 03).
12:
AGC pointer (e.g. 3).
13: Correction value (e.g. 7).
R
7.
Press the
button (the flashing LED goes out).
Sirona Dental Systems GmbH
3.
4.
60 82 064 D 3297
D 3297.031.01.04.02
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