4
Acceptance Testing
CPI Canada Inc.
Use and disclosure is subject to the restrictions on the title page of this CPI document.
Page 4-4
CMP 200
®
X-Ray Generator Service Manual Ch # 901476-06
Rev. A
4.3.1
Console Tests (Cont)
Step
Action
Result
Check
13.
Ensure that AEC is selected.
Press the film-screen select button.
The three film-screen LED’s (I, II,
III) alternately light as the switch
is pressed.
14.
Select 60 kV, 50 mA, 100 ms.
Press the PREP button.
The LED adjacent to the prep
button lights.
15.
Press the X-ray button.
The X-ray warning indicator
lights during an X-ray exposure,
and an audible tone is heard
from the console.
16.
Ensure that
AEC
is selected.
Press the individual AEC field select buttons in
sequence.
The LEFT, CENTER, and RIGHT
field selection LED’s should light
as each field is selected.
17.
Press the power OFF button on the console.
The unit switches off.
4.3.2
Low Speed Starter Verification
Step
Action
Result
Check
1.
Connect a current probe to the common lead
of the X-ray tube stator.
Switch ON the console.
Press and hold the PREP button.
A 60 Hz waveform dropping to
less than half amplitude after
prep is complete.
2.
Measure the rotor boost time.
Should be approximately 1.5 sec.
3.
Use a strobe or reed tachometer and verify
that the tube reaches operating speed at the
end of boost.
Speed
≥
3300 RPM.
4.
Switch OFF the console.
4.3.3
Dual Speed Starter (Optional) Verification
THE GENERATOR MUST BE PROGRAMMED FOR DUAL SPEED STARTER OPERATION IN ORDER
TO BE ABLE TO VERIFY BOTH MODES OF OPERATION IN THIS SECTION. DO NOT DO SO IF A
TUBE IS USED THAT CANNOT OPERATE AT BOTH LOW AND HIGH SPEEDS.
***** PLEASE OBSERVE A MAXIMUM OF 2 HIGH SPEED BOOSTS PER MINUTE *****
Step
Action
Result
Check
1.
Connect a current probe to the common lead
of the X-ray tube stator.
Switch ON the console.
Select 70 kV, minimum mA, 50 ms.
Press and hold the PREP button.
A 60 Hz waveform dropping to
less than half amplitude after
prep complete.
2.
Measure the rotor boost time.
Should agree with the value in
the dual speed starter table in
the supplement at the end of
chapter 2.
