biodex ATOMLAB 500, Operation And Service Manual, Page: 142 / 212

Figure 7.18. Half Life Verification Screen – Test Aborted Message.
A new test can be started by touching <New Test>. The system returns to the Half Life
Verification screen. The test parameters or isotope can be changed at this point.
15. When ready, touch <Start Recording>. The Half Life Verification test will begin.
NOTE: If <End Recording> is selected, the Half Life Verification APP will end and use the
elapsed time for the calculation. If the counting time is not long enough, it could affect the
results. It is recommended to have the count complete the preset time.
16. When the test is complete, the results are shown on the screen. The results include the
calculated Half Life and the variance percent from the published Half Life of the isotope.
Figure 7.19. Two Reading Half Life Verification Results screen.
17. If <Back> is touched, a message will be displayed that data will be lost if the action is
continued.