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3. If you wish to change sources touch <Select Sealed Source>. If you have one to three
sources, touching <Select Sealed Source> toggles between the sources. If more than three
sources are listed, touching <Select Sealed Source> brings up the Sealed Source List.
NOTE: You can select your default sealed source, which will be the first source displayed
when you enter the Constancy screen. Set the default in Sealed Source Set Up. Otherwise,
the first source displayed will be the first source on your Sealed Source List.
4. If the current background activity reading is higher than desired, touch <Zero Background>
and zero the background.
5. Place the selected sealed source into a dipper and then into the detector. Allow the reading to
settle. it is shown in the current activity section of the screen.
6. Touch <Record Reading> to enter the reading. The variance from the decayed calculated
standard is shown.
7. If you touch <Back>, a message that recorded data will be lost is displayed. Touch <Yes> to
return to the Daily Constancy Test screen without saving the data. Touch <No> to return to the
Daily Constancy Test screen with the data recorded.
8. Touch <Save> to save the Daily Constancy Data. The Daily Constancy Data screen is now
displayed.
9. Touch <Staff Member>. The Staff Member List is displayed. Touch to highlight any listed
staff member. (If you have previously selected a staff member, the system will default to that
person on the Daily Constancy Test data screen.) If necessary, touch <Add Staff Member> or
<Delete Staff Member> to update the Staff Member List. Touch <Enter> to select the staff
member and return to the Save Daily Constancy Data screen.
NOTE: A staff member name must be selected to save the constancy test.
10. Touch <Save Data> to save the test results.
• Touch <Measure> to go to the Measure screen
• Touch <View Data> to advance to the Daily Constancy Test data screen and view the
previous tests (see view constancy data section for details).
• Touch <Back> to return to the Daily Constancy screen just counted. Touch <Back> again
to return to the QA Dose Calibrator screen.
• <Save Data> is inactive at this point because the data has already been saved.
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