Oscilloscope Method - Siemens MOBILETT XP Digital Installation And Startup

44
Fig. 18: kV measurement
•
X
Set the following exposure parameters and release an exposure after each setting:
kV meter
Selection
DC voltage
* The measuring inaccuracy of the measuring instrument used must be subtracted from
the specified limit values.
P
Record the measured values.

Oscilloscope method:

"KVS" measuring point for the nominal value and "KV" measuring point for the actual
value. The measuring ratio is 30 kV/V.
•
Remove the top cover and place on a table or similar surface. All cables remain con-
nected. Measuring points on CPU D916 (see troubleshooting instructions).
•
Connect the oscilloscope to the measuring points of the CPU D916 TP KV, KVS, and
GND (also see the troubleshooting instructions). Oscilloscope setting: Channel 1 = TP
KV 1V/div, channel 2 TP KVS 2V/div, trigger channel 2, trigger stage 2.5 V, 2V/div, 50
ms/div
MOBILETT XP Digital
Exposure parameters
52 kV 50 mAs
81 kV 20 mAs
133 kV 12.5 mAs
SPR8-230.814.30.03.02
11.05
Limit values*
49.0 - 55.0 kV
77.0 - 85.0 kV
126.4 - 139.6 kV
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