Completing the Tests
When the UltraRadiac has passed all tests, the
unit is ready for operation.
If the unit fails any of these Operational Veri-
fication Tests, contact your local Canberra
Service Center.
GM Tube Failure Indication
If the unit’s Geiger-Mueller tube should stop
counting, the display will flash, showing three
rows of three dashed lines each (Figure 6).
Contact your local Canberra Service Center
for repairs.
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Figure 6 The GM Tube Has Failed
