G-6
Appendix G
Search Results
Overview There are several types of results that can display at the end of an Earth Fault Search. This
section covers all types of results.
Non-Point Faults A non-point fault indicates a ground that cannot be traced to an addressable point (for example,
a shield or an audio riser). The earth fault in this example is not occurring at the audio
controller but somewhere in the riser:
Non-point faults can be displayed for each of the following items:
• Shield (Flex 50/100 W Amplifier)
• Audio Riser (Digital./Analog Audio Controller; Local Mode Transponder; may also
annunciate as "DAR SECONDARY" (Digital Audio Riser Secondary) on transponder)
• Remote Mic 1 and Push-to-Talk line (Digital./Analog Audio Controller) (other remote
mics are not supported)
• Channel Output (IDNet Card; MAPNET Interface Card)
• RUI Channel (Master Controller Card)
• Channel 1 to 3 (TrueAlert Power Supply)
Point Faults A point fault indicates a ground at a specific addressable point. The example below is a
location earth ground search result, where 3 is the card address, 10 is the point number, and 0 is
the sub-point number (not used):
Point faults can be found at any point in the system that connects to field wiring.
Some IDNet channel point fault examples are illustrated below.
Fault not cleared. The message below shows that an IDNet channel that has been isolated for
fault detection still has the earth fault:
Fault between channel output and first isolator. The message below shows a fault between
the IDNet channel output and the first isolator on the line:
Continued on next page
IMPORTANT:
Once you have been directed to an earth ground fault and
corrected it, it is recommended that you restart the system
(warm- or cold-start).
CARD 17, ANALOG AUDIO CONTROLLER
AUDIO RISER 1 EARTH FAULT
CARD 003, FLEX 50 AMPLIFIER
3-10-0 EARTH FAULT
CARD 2, IDNET CARD (250 POINTS)
M1, EARTH FAULT SEARCH FAULT CLEAR FAIL
CARD 2, IDNET CARD (250 POINTS)
M1, CHANNEL OUTPUT EARTH FAULT
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