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Voltage LEDsFigure 4-2:
The following LEDs are associated with the following GC components:
LED GC Component
FUSE OPEN Glows red when the fuse has blown or been removed; otherwise, it is not lit.
24 LOOP (Power) Glows green when the current loop for the analog outputs is functioning prop-
erly; otherwise, it is not lit.
24V (Regulated) Glows green when the GC power is functioning properly; otherwise, it is not lit.
17V
(Input for the
preamp)
Glows green when the Preamp is functioning properly; otherwise, it is not lit.
12V
(Input for the I/O
cards)
Glows green when the optional ROC expansion card is functioning properly;
otherwise, it is not lit.
5V1 Glows green when the System chips are functioning properly; otherwise, it is
not lit.
3V Glows green when the System chips are functioning properly; otherwise, it is
not lit.
POWER ON Glows green when the GC is on; otherwise, it is not lit.
Temperature
Use MON2020 to monitor the temperature of the detector(s) and columns to determine if
the GC is thermally stable.
When connected to the GC via MON2020, select Heaters… from the Hardware menu to
access this function. The Heaters window displays.
Operation and maintenance
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Operation and maintenance
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