GE Senographe DS Manual page 1757

GE Healthcare
Revision 1
6-2 Check mA displayed on the X-ray Console
1. Go to the medical application and use the parameters shown in the following table to make an expo-
sure.
2. Note the Nominal mA value (N) displayed on the X-ray Console, and the Measured mA value (M) on
the meter. Calculate the values N +5% and N -5%.
Filter/Track/
Focal spot
Mo/Mo/LF
3. For the check to pass, the Measured mA value (M) must be within ±5% of the Nominal mA value (N).
4. If the check fails, perform the calibrations described in
surement on page 1663
6-3 Check mA calibration
1. Make four exposures, using the parameters shown in the following table.
2. For each exposure, note the Measured mA value (M) on the meter.
Filter/Track/
Focal spot
Mo/Mo/LF
Mo/Mo/SF
Rh/Rh/LF
Rh/Rh/SF
3. For the check to pass, each Measured mA value (M) must be within ±5% of the corresponding
Expected Nominal mA value shown (N).
4. If the check fails, there is a system error which must be corrected.
6-4 Check mAs calibration
1. Follow the instructions of section
milliammeter.
2. Use the parameters shown in the following table to make an exposure.
3. Note the meter reading Measured mAs.
Filter/Track/
Focal spot
Mo/Mo/LF
4. For the check to pass, the meter reading Measured mAs must be between the Lower and Upper lim-
its shown.
5. If the check fails, there is a system error which must be corrected.
JC-CHK-A-013.fm
kV Selected Nominal mA
mAs (N) on Console
30 100
and Job Card CAL A012 - X-Ray Tube Heater Current on page
kV Selected
mAs
30 63
30 63
30 63
30 63
6-1 Preparation, but this time connect an mAs meter in place of the
kV Selected
mAs
30 63
Service Information and Procedures Class A 2385072-16-8EN
Job Card CHK A013 - Check mA and mAs settings
Measured
mA (M)
Job Card CAL A009 - X-Ray Tube mA Mea-
Measured Expected Nominal mA (N)
mA (M)
N-5%
95
38
58.9
33.25
Measured Lower limit
mAs (63 mAs -5%)
59.9
Page no. 1757
N+5% N-5%
Test result
Pass/Fail
N N+5%
100 105
40 42
62 65.1
35 36.75
Upper limit
(63 mAs +5%)
66.2
Senographe DS
Test result
Pass/Fail
1673.
Test result
Pass/Fail
Chapter 9