ORTHORALIX 9200
Service Manual
A-8
Gendex Dental Systems 4519-190-71193-7
A.5.4
Performance data
A.5.4.1
Exposure geometry data (Pan mode)
Distance from focal spot to mechanical rotational centre: 350 mm
Distance from focal spot to film: 505 mm
Distance from focal spot to secondary slit: 497 mm
Inclination of central X-ray with respect to horizontal: 5
Occlusal plane height adjustment: 1000 - 1800 mm
Distance from focal spot to primary collimator: 94 mm
A.5.4.2
Exposure geometry data (Ceph mode)
Distance from focal spot to film: 1500 mm
Distance from focal spot to centre of cephalostat: 1350 mm
Height adjustment of ear center plane with respect to floor:
1000-1800 mm
Distance from secondary collimator to digital sensor: 375 mm
(DDE versions only)
A.5.4.3
Image quality
Maximum resolution (at the centre of the focal through) in stan-
dard panoramic mode and using the recommended film-screen
combination (Kodak Lanex Medium - Kodak T-MAT-G or equiva-
lent) approximately 2.2 lp/mm.
PROJECTION
MAGNIFICATION FACTOR
Standard, Dentition only
1.25
Child
1.25
TMJ lateral view
1.25
TMJ frontal view
1.64
Maxillary sinus, frontal view
1.25
Right/left maxillary sinus, lateral view
1.25
Right/left jaw
1.25
Transcan
1.4
Transcan DDE
1.33
Ceph (all projections)
1.1
Frontal dentition
1.25
Half orthogonal right/left
1.25
PROJECTION
DEVIATION FROM ORTHOGONALITY
(referred to standard jaw, in the premolar
region)
Standard
24° max
Dentition only
12° max
Ceph
2° max
Ceph DDE versions
6.5° max
A.5.4.4
X-ray tube
Tube type:
GX 100-20 DC
Focal spot size:
0.5 (IEC 336/1993)
Anode angle:
5°
Anode material:
Tungsten in copper body
Rated peak tube potential: 100kVp
Anode heat storage:
25 kHU
Max anode heat
dissipation rate:
12 kHU/min
For the cooling data see page A-15.
A.5.4.5
Tubehead
Weight:
10 kg. (4,1/2 lbs)
Duty cycle:
1/20, one exposure per 4 min, at full
power operation.
Leakage radiation:
less than 250 µGy/h (28 mR/h) at
1 m from focal spot in any direc-
tion.
Inherent filtration:
2.5 mm Al equivalent (minimum).
Reference current
time product:
1.12 mAs at 84 kV.
Current time product:
0.48 mAs at 60 kV.
A.5.4.6
X-ray field dimensions
Please refer to the Operator’s Manual.
A.5.4.7
Power generation
High tension and filament power generation is performed by
means of solid state medium frequency converter technology
(25 kHz).
All electronic parts are included in a single board.
The converter provides automatic stabilization with respect to
mains fluctuations.
In addition it is protected against the following:
t .BJOTUSBOTJFOUT
t 0VUQVUTIPSUDJSDVJU DBCMJOHUVCFGMBTIPWFSFUDUISPVHIDVS
-
rent limitation to max. 11A.
t 0QFOGJMBNFOUDJSDVJU
t 0QFOL7GFFECBDLTJHOBM
t 0QFON"GFFECBDLTJHOBM
t 0WFSIFBUJOHPGQPXFSFMFDUSPOJDT ¡$
(04.0)E
Printed on: 20 Apr 2012, 04:59:40 pm; Printed by: UWE.ZELLER
