GE AMX-II User Manual

GENERAL ELECTRIC MEDICAL SYSTEMS
AMX-H X-RAY UNIT
6-978
SM A 0654E
SEC. 13 X-RAY KVP AND MAS ACCURACY
NOTE: The tests of Sections 13, 14, 15 and 16 may be done in any order, except that the check of
KVP and MA accuracy (Section 13) must be done at a battery voltage between 110 and
120 VDC. Battery voltage is measured with the main circuit breaker, 6CB1, and operator's
keyed switch, 5S1, ON and after the battery has recovered for at least one minute after
completion of the last x-ray exposure.
Initial Conditions:
a. | Battery voltage between 110 and 120 VDC.
b. MA adjusted for 100 MA with H. V. Divider
and 5 ft. H. V. Cables connected (Section 11).
instrumentation:
a. Measure battery voltage with D.V.M. (Section
11).
b. Measure x-ray tube current with DCMA Meter
(Section 11).
c. Scope connected to H. V. Divider (Sec. 12).
V:20KV/DIV; H:5MS/DIV TRIG: EXT. CKT.
1. Turn circuit breaker and keyed switch ON.
Measure battery voltage. Battery voltage will
depend on state of charge. For this test it must
be between 110 and 120 voits.
4.4 Make an x-ray exposure at 80 KVP, 4 MAS.
Measure KVP. Compare scope waveform with
illustration at right. KVP should be 80 (+(10
KVP +5%) (-(5 KVP +5%). Check durina last
20 milliseconds of exposure as MA stabilizer
does affect KVP during first 20 milliseconds.
4.43 Wait one minute from step 2. Measure battery
voltage, then make a second exposure at 80
KVP, 200 MAS. Measure MA and record. Bat-
tery
voltage should be between 110 and 120
volts. MA should be 100 MA +/- 1.
4. Wait one minute between exposures then repeat
steps 2 and 3 at 50 KVP and 110 KVP. KVP
should be within (+(10 KVP +5%) (-(5 KVP +
5%)) of selected value. MA should be within 95
and 105 MA at a battery voltage between 110
and 120 volts.
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21817-P10
ILLUSTRATION 4-11-37. 80 KVP; 4 MAS
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21818-P10
ILLUSTRATION 4-11-38 50 KVP;4 MAS
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21819-P10
ILLUSTRATION 4-11-39. 110 KVP; 4 MAS
4-11-31

GE AMX-II Specifications

General

Brand	GE
Model	AMX-II
Category	Medical Equipment
Language	English