biodex ATOMLAB 500, Operation And Service Manual, Page: 165 / 212

Appendix B: Atomlab Display Diagnostics
Overview
The new generation Atomlab 500 has real-time monitoring of the detector statuses. The
detectors have real-time self-tests; the results of which are reported back to the display
approximately once per second. Dose calibrator detectors and well counters are the two types
of detectors supported.
During normal operation, detector status changes are handled by the display, reported on the
tablet with a pop-up screen and audio tone alert, and actions taken based on the severity of the
reported status.
Real-Time Operating Detector Status Changes
During the course of normal operation, detectors report their status constantly to the tablet,
including any detectable error conditions. The status reports are received as long as the power
to the display remains on, the detectors are connected, and there is no severe fault state
(communication error) — even if the detectors are not being used, or the display is blanked by
the screen saver, the detectors are still communicating and being monitored.
For all newly reported error statuses, a detector or detector status error reporting screen is
displayed with an audio tone to alert the user. An error code is displayed with its brief
description. If WARNING is displayed next to the code, it indicates the detector is still usable. If
FAIL is displayed next to the code, the detector is automatically dropped. The activity readings
displayed are dashed out and the Activity screen indicates no available detector, or detector
error.
For “Detector Leaking Gas” or “Detector Gas Low” warnings, there is a 24-hour reminder
warning implemented. If either of these warnings is in effect for a connected detector, every 24
hours the detector or Detector Status screen displays with this warning code and description.
All of the 24-hour reminders are scheduled to appear at 8:00 am, and they are only displayed if
four hours has elapsed since the warning was first detected and displayed.
Detector Diagnostics Display
There are several properties of a dose calibrator detector monitored and measured. The results
are reported as a coded value with an associated description. If there is only one error in effect,
the associated description is displayed. If there are multiple errors, only the codes are
displayed. The table below lists the error codes, class descriptions, and definitions for dose
calibrators: