90 1200 Series DAD and MWD User Manual
6 Troubleshooting and Diagnostics
Detector Status Indicator
The detector status indicator indicates one of four possible detector
conditions:
• When the status indicator is OFF (and power switch light is on), the
detector is in a prerun condition, and is ready to begin an analysis.
• A green status indicator, indicates the detector is performing an analysis
(run mode).
• A yellow indicator indicates a not-ready condition. The detector is in a
not-ready state when it is waiting for a specific condition to be reached or
completed (for example, immediately after changing a set point), or while a
self-test procedure is running.
• An error condition is indicated when the status indicator is red. An error
condition indicates the detector has detected an internal problem which
affects correct operation of the detector. Usually, an error condition
requires attention (e.g. leak, defective internal components). An error
condition always interrupts the analysis.
• A red-blinking indicator indicates that the module is in resident mode (e.g.
during update of main firmware).
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