Miscellaneous Service Issues - Siemens MOBILETT Plus Installation Instructions Manual

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Service instructions manual (114 pages)

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Table Of Contents

Table of Contents

Supplements to Service Instructions

10.

Set kV to 102 and mAs to 20 and release an exposure.

11.

Record the dose value measured with the dose meter.

12.

Calculate the reference DAP value using the measured dose value according to

the following formula:

Reference DAP value

13.

Record the DAP value measured with the DAP measuring system (DAP value

from display).

14.

Calculate a comparison with the following formula:

Comparison value (%)

The comparison value shows the deviation between the actual DAP value

(measured with the dose meter) and the DAP value measured with the DAP

measuring system. If the comparison value is negative, the DAP display shows a

value that is lower than the actual value, and vice versa.

If the comparison value is less than ±5%, the calibration is completed.

15.

To correct the deviation, press the "UP" button on the calibration tool (for negative

comparison values) or the "Down" button (for positive comparison values).

Pressing a button once corresponds to approximately 0.5% change of the

comparison value.

NOTE

16.

Repeat steps 10. to 15. until the deviation is less than ±5%.

17.

System OFF.

18.

Remove the DAP calibration tool and reconnect the DAP ionization chamber to

board D70 (pos. 1 / Fig. 1).

19.

System ON.

20.

Press the reset and the test buttons to complete the calibration procedure.