Acceptance Tests (Kvp, Time, Ma And Mas); Generator Rad Tests - CPI Indico 100 Series Service And Installation Manual

CPI Canada Inc.
4.4.5 Dual Speed Starter Verification (Cont)
Step
4. Measure the rotor boost time.
5. Use a strobe or reed tachometer and verify
that the tube(s) reach operating speed at end
of boost. Use the techniques in steps 1 and 3
to select low and high speed modes
respectively.
6. After a high speed prep, verify that the
dynamic brake is applied.
7. Connect a current probe to the common lead
of tube 2.
Select 70 kVp, minimum mA, 50 mSec.
Press and hold the "PREP" button.
8. Measure the rotor boost time.
9. Select 100 kVp, maximum mA , 50 ms, small
focus.
Press and hold the "PREP" button.
10. Measure the rotor boost time.
11. Use a strobe or reed tachometer and verify
that the tube(s) reach operating speed at end
of boost. Use the techniques in steps 7 and 9
to select low and high speed modes
respectively.
12. After a high speed prep, verify that the
dynamic brake is applied.
13. Switch OFF the console
4.5.0

ACCEPTANCE TESTS (KVP, TIME, MA AND MAS)

4.5.1

Generator Rad Tests

Measurement of kVp, mA, and time may be done via test points at the generator CPU board as per figure
4-3. These are direct feedback voltages and are scaled to represent the actual kVp and X-ray tube current
AS LONG AS THE GENERATOR IS CALIBRATED.
REFER TO NOTES ON PAGE 11.
NOTE: TEST EQUIPMENT TOLERANCES MUST BE ALLOWED FOR IN THE MEASUREMENTS IN
THE FOLLOWING SECTIONS. LIMITS STATED ARE THE MAXIMUM ALLOWED LIMITS,
INCLUDING EQUIPMENT TOLERANCES AND MEASUREMENT ERROR.
Millenia / Indico 100 Series Service Manual
Action
FOLLOW STEPS 7 TO 12 IF TUBE 2 IS USED (DUAL SPEED STARTER)
Should agree with value in table
2-1.
Low Speed
High Speed ≥ 9500 RPM.
Will hear the X-ray tube slow
down to 60 Hz.
A 60 Hz waveform dropping to
less than half amplitude after
prep complete.
Should agree with value in table
2-1.
A 180 Hz waveform dropping to
less than half amplitude after
prep complete.
Should agree with value in table
2-1.
Low Speed
High Speed ≥ 9500 RPM.
Will hear the X-ray tube slow
down to 60 Hz.
N/A
Ch # 740904-08 Rev. F
Acceptance Testing
Result
≥ 3300 RPM.
≥ 3300 RPM.
Page 4-9
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