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GENERAL
ELECTRIC
MEDICAL
SYSTEMS
AMX-li X-RAY UNIT
6-978
SM A 0654E
Peak
Test 21
Chapter 5
KVP Accuracy
On installation, preventive
F-3316
Tube
Sec 3-5
maintenance calls, and when-
F-3382
Potential
KvP
ever repairing or replacing
(KVP)
50 to 110
(+(10 KVP +7%))
|
battery, KVP control circuits,
(-(5 KVP +7%)) of dial
or H.V. components.
reading after first 20
miiliseconds of exposure.
50 to 96
(+(20 kvp +7%)
(-(5 KVP +7%)) of dial
reading during first 20
milliseconds of exposure.
100 to 110
(+25 KVP +7%))
(-(5 KVP +7%)) of dial
reading during first 20
milliseconds of exposure.
Indirect Test
Test 27-33 | Chapter 4
19.6 V (RMS) at minimum
On installation, preventive
F-3382
of Collimator
Test Set F
Sec 5-5
battery voltage of 110 VOC.
maintenance calis, and when-
Hiumination
Chapter 5
ever repiacing collimator
Level
Sec 4-1
or collimator lamp.
Collimatur
Tesi 27-33 |
Chapter 4
Misalignment of edges of
On installation, preventive
F-3382
Ahgnment;
Test Set F
Sec 5-6
Light Field and X-Ray
Field
maintenance calis, and when-
Light Fieid
Chapter 5
shall not exceed 1.8% of SID.
ever repairing or replacing
to X-Ray
Sec 4-5
collimator or x-ray tube unit.
Field
Collimator
Test 27-33 |
Chapter 4
Field size indicators shall
On installation, preventive
F-3382
Alignment;
Test Set F
Sec 5-6
agree with actual field
maintenance calls, and when-
Actual vs
Chapter 5
size within 1.8% of SiD.
ever repairing or replacing
indicated
Sec 4-4
collimator
X-Ray
Field
Inherent
Test 13
Chapter 4
Half value layer of usefui
On installation, and whenever
F-3316
Filtration;
Sec 6-1
x-ray beam shail not be less
replacing tube unit, insert,
F-3382
Diagnostic
than 2.3 mm at 80 KVP
collimator mirror, or other
Source
absorption between source
Assembly
and patient.
1-3
Tools and Materials
1.
Voltmeter, 0/150/300 vac, 25 to 500-Hz, accuracy 3/4 of 1% of full scale, Weston Instruments Inc.
Cat. No. 433-1903010.
Where this meter is not readily available, use the following instruments with
lower response on the square wave 60 Hz and the higher frequence (500 Hz) voitage.
Voltmeter,
0/150/300 vac, 25 to 125 Hz accuracy 3/4 of 1% of full scale, GE type AP-9, Cat. No. 50-20102RHRH
or Weston Instruments Inc. Cat. No. 433-1903009.
2.
Multimeter, Simpson Mode! 260, Triplett Mode! 630 or equivalent (20,000-ohm/volt dc, 5,000-ohm
volt/ac).
3.
Standard wrench (507A935G1) for GE type Il cable terminals.
4.
Qscilloscope, Tektronix 564 or equivalent, dual trace, memroy
type with algebraic addition feature
and X10 probes.
(A Tektronix type 422 scope is satisfactory where trouble shooting is not required.
5.
1-gallon (3.8 litres) Diala AX for adding the HV transformer, if required.
6.
Socket wrench
1-1/16" hex.
5-2
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