42 Adjustments / Programs
SIREMOBIL Iso-C SPR2-230.840.01.01.02 © Siemens, 2008
08.08 CS PS SP
Page 42 of 148
For internal use only
Checking the generator adjustment 5.2
x With the system on, connect the service PC to the SIREMOBIL Iso-C.
x Select "Test..." in the Diagnostic menu.
x Select cassette simulation in "Function Groups".
x Select cassette switch on in "Available Functions". The SIREMOBIL Iso-C is now in
direct exposure mode.
x Select 81 kV with the kV+ / kV- keys.
x Select 8 mAs with the mAs+ / mAs- keys.
x Connect oscilloscope channel 1 to D1.X46, ground at 0V. Set the sensitivity to 1V / Div.
x Connect oscilloscope channel 2 to D1.X48, ground at 0 V. Set the sensitivity to 2.5V /
Div.
x Set the time to 25 ms / Div.
x Set the oscilloscope on storage mode.
X
x Release an exposure with the hand switch and store the oscillogram with the exposure.
x Evaluate the stored oscillograms. The tube current must reach the tolerance range of
13 mA r1.5 mA in a time of 3 ms, and may not leave this range for the next 6 ms (the
tube current may not run above 14.5 mA within the first 6 ms).
x See also the oscillograms in (Fig. 16 / p. 42) and (Fig. 17 / p. 43) and (Fig. 18 / p. 43).
x Select "Cassette switch off" on the service PC in "Available Functions". Direct expo-
sure mode is cancelled.
x If the unit exceeds the tolerance range, the generator adjustment must be repeated.
Fig. 16:
kV-act (20 kV = 1.0 V)
mA-act (2.5 mA = 1.0 V)
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