22 Adjustments
ARCADIS Varic / Orbic SPR2-310.842.01.07.02 Siemens AG
12.06 CS SD 24
Page 22 of 34
Medical Solutions
8. Remove the cover from the single tank.
9. Adjust the chamber gain by pushing the up or down button for at least 200 ms for each
push at the chamber (1/Fig.5/p.22).
¹ Use a small Allen key (diameter 0.5 - 1.0 mm) to push the “UP” or DOWN” button
(e. g. 20 x push down = -10%).
¹ “DOWN” = 0.5 % reduction of gain per push.
¹ “UP” = 0.5 % increase of gain per push.
10. Reinstall the single tank cover, check the dose rate again and perform a “Wellhöfer -
chamber test”.
NOTE
A “Wellhöfer chamber test” is necessary after a “Wellhöfer cham-
ber gain adjustment”.
Wellhöfer - chamber test
1. Click on <Go> to start the chamber test.
¹ Status bar: success
¹ Wait about 3 seconds for the constant readout
2. Note the displayed “DAP” or “Air Kerma” from the ARCADIS monitor depending on the
configuration (path: <Configuration>-<Imaging System>-<Display Settings>).
¹ With “DAP” configured, the monitor indication is “ xx.xx cGcm
2
”.
¹ With “Air Kerma” configured, the monitor indication is “ xxxx.x mGy ”.
3. Click on <Go> again to stop the chamber test.
¹ Status bar: success
¹ Window appears: Calibration is finished --> confirm with <OK>.
¹ The main system restarts.
Fig. 5: Wellhöfer_DAP
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