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SECTION ONE : TECHNICAL DATA
[1]
ELECTRICAL AND RADIATION DATA
1. Nominal focal spot value ............................................ 0.8 mm (IEC)
2. Rated peak tube potential ............................................ 70 kVp
3. Rated tube current ....................................................... 10 mA
4. Maximum rated peak tube potential ........................... 70 kVp
5.
6. Power line frequency .................................................. 50/60 Hz
7. Exposure time ............................................................. 0.02 ~ 3 sec.
(ON and OFF are zero crossed.)
8. Timer accuracy ............................................................ ±1 pulse (1/50sec. for 50
Hz
,1/60sec. for 60
Hz
)
9. Inherent ltration ........................................................ 1.3 mmAl Equivalent
10. Added ltration ........................................................... 0.8 mmAl
11. Minimum ltration permanently in useful beam ........ 2.1 mmAl Equivalent at 70 kVp
12. Nominal roentgen output
a. Distal end of regular cone ........................................... 8.2mGy/sec. + 30 %, - 40 %
b. Distal end of long cone ............................................... 3.7mGy/sec. + 30 %, - 40 %
13. Source to skin distance
a. Regular cone ................................................................ 204 mm
b. Long cone .................................................................... 305 mm (OPTION)
14. Leakage technique factor ............................................ 70 kVp / 0.16 mA
0.16 mA is maximum rated continuous current
for 10 mA with a duty cycle 1: 60
15. Duty cycle ................................................................... 1: 60 (0.5 sec. exposure with 30 sec. interval)
16. Source to the base of cone distance ............................ 81 mm
17. Reference current time product ................................... 30 mAs (70kVp, 10mA, 3sec.)
18. Maximum earth leakage current ................................. 0.5 mA
19. Field size ..................................................................... Round 58 mm
20. Tolerance of the focal spot marking ............................ ±1 mm
21. Tolerance of target angle ............................................. 1˚
22. Measurement base of technique factors
a. Peak tube potential ...................................................... Peak tube potential of conducting half cycle
b. Tube current ................................................................ Average of tube current during one cycle of
line frequency
c. Exposure time .............................................................. Impulese of power line frequency