Chapter 7 Page no. 572
JC-ELE-A-012.fm
GE Healthcare Senographe DS
Revision 1 Service Information and Procedures Class A 2385072-16-8EN
Job Card ELE A012 - X-ray Parameter Check
5. Protect the detector using 25 mm of acrylic.
6. Open New Patient in the Browser. Take five exposures at approximately 20 second intervals, incre-
menting the HV by 2 kV each time (i.e., 22 - 24 - 26 - 28 - 30 kV).
7. Take five more exposures at the same interval, leaving the HV set at 30 kV.
8. The X-ray tube current value displayed on the X-ray Console (I
display
) must be 100 mA ± 5 mA,
and
must agree with the value read on the mAs meter (I
measure
) ± 5%.
If I
display
is not equal to I
measure
then perform the procedures of Job Card CAL A009 - X-Ray Tube mA
Measurement on page 1663, followed by Job Card CAL A012 - X-Ray Tube Heater Current on page
1673.
9. Take two exposures at 40 kV and 50 mAs at an interval of 30 seconds. No arcing must be detected.
If arcing is detected, perform the procedure given in Job Card CAL A007 - Automatic X-ray Tube
Warm-Up on page 1661.
10. Reconfigure the Senographe to 30 kV and 25 mAs. Take one exposure for each of the three follow-
ing focal spot/track combinations and check the expected X-ray tube current reading on the X-ray
Console display:
SMALL FOCAL SPOT/MO TRACK => I = 40 mA ±2 mA
SMALL FOCAL SPOT/RH TRACK => I = 35 mA ±2 mA
LARGE FOCAL SPOT/RH TRACK => I = 62 mA ±4 mA
11. Disconnect the mAs meter from the Senographe and reconnect the jumper on kV mA board 701-
PL1.
12. Verify kVp using a non-invasive kVp meter and, if needed, perform Job Card CAL A011 - Calibration
of kV Scale Factor on page 1667. This step may be mandatory, when required by local regulations.
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