Siemens MOBILETT Plus HP Maintenance Instruction page 46

46
NOTE
•
X
Calculate the product of the tube current x the exposure time for the following exposure
parameters:
Set on the control and display panel
* The measurement inaccuracy for the measurement device must be subtracted from
these limit values.
•
Determine whether the mAs product (tube current + reactive current) x exposure time
lies within the indicated tolerances.
Setting
•
Proceed according to section "P10 - Fast adaptation" in the Service Instructions to elim-
inate slight deviations.
PMF mAs accuracy 40 kV, 5 mAs (B)
PMF mAs accuracy 81 kV, 2 mAs (B)
PMF mAs accuracy 133 kV, 10 mAs (B)
•
Connect the power supply plug and switch the main switch to position "M".
•
X
Set the following exposure parameters and release an exposure:
Set on the Control and display panel
•
Disconnect the power supply plug, roll up the cable and switch the main switch to posi-
tion "B".
PMF mAs accuracy 81 kV, 2 mAs (M)
MOBILETT Plus HP
The signal contains a high frequency of 20-40 kHz, which can lead
to measurement problems with the oscilloscope (aliasing effect).
Always use an oscilloscope with a high sampling rate.
kV
40
81
133
kV
81
SPR8-220.101.04.03.02
07.05
Inspection and Maintenance
mAs
5
2
10
Acceptable mAs value*
mAs
2
Page 46 of 64
CS PS 24
Acceptable mAs value*
4.7 - 5.3
1.9 - 2.1
9.5 - 10.5
1.9 - 2.1
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