Electronics International CGR-30P - Manual (Page 71)

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Specifications, Functions and Features
Continued
“A-D” - If one or more of the four A/D converters in the EDC has a problem, the EDC will send an
error code to the CGR. The CGR will display A-D for each function that is affected by the malfunction-
ing A/D converter.
“OVR” - If a channel on the EDC is over ranged (>2.5 volts differential), an “OVR” will be displayed
for that function.
“REF” - If the reference for any function has a problem or a derived value used to calculate the function
has a problem, the display for the function will show “REF.”