Centering The Camera Optics To The I.i. Output; Checks And Adjustments - Siemens SIREMOBIL Compact Service Instructions Manual

Replacing boards / replacing components

Centering the camera optics to the I.I. output

WARNING
Prerequisite: The +220°, -220° and 0° positions were already marked as previously
described.
•
Rotate the camera optics back to the 0° position.
•
Loosen the three attachment screws of the camera optics slightly.
•
Loosen both excenter screws adjacent to the camera optics slightly.
•
Move the camera optics toward the center, between both +220° and -220° markings (see
also Fig. 9).
•
Switch fluoro on briefly and evaluate the position on the monitor.
According to the ratio of the I.I. input screen diameter to the I.I. output screen diameter, a
shift of the camera optics by approximately 0.1 mm corresponds to a position shift of the
washer displayed on the monitor of more than 1.3 mm (17 cm I.I.) or 1.7 mm (23 cm I.I.).
•
Secure the camera optics again.
•
Erase the three markings on the monitor.
•
Switch fluoro on briefly and mark the new 0° position.
•
Rotate the camera to the -220° position.
•
Mark the center on the monitor.
•
Rotate the camera to the + 220° position.
•
Mark the center on the monitor.
•
Place an 8 mm washer over the three markings.
All three markings must be located within the 8 mm diameter of the washer. An 8 mm
washer has a somewhat larger inner diameter of 8.4 mm, therefore the markings must
clearly lie within the inner diameter and should not touch the edge of the washer. If
necessary, repeat the adjustment until the three markings fall within the 8 mm diameter.
•
Secure the camera optics.
•
Retighten the excenter screws of the camera optics.

Checks and adjustments

•
Check the camera rotation and adjust it if necessary.
•
Check the setting of the radiation iris and readjust it if necessary.
•
Check the dose rate again and adjust it if necessary.
•
Perform the IQ quick test.
Siemens AG
Medical Engineering
X-ray radiation!
See Chapter 1, Safety Information.
Protect yourself against radiation exposure. Wear a lead apron.
Register 5 RXR2-130.061.02
Rev. 03
Page 13 of 18
10.03 CS PS 24
6 - 13
6
6
SIREMOBIL Compact
System Manual