Inovonics FA464DR - Manual (Page 7)

© 1999 Inovonics Wireless Corporation 02039F.DOC LIT-FA464-INSTALL
7
hc:21-Nov-03
Receiver Operation:
Fault output operation: By default, the Global Fault Output will activate upon recognition of a trouble
condition. Tamper and Low Battery signals will cause the Global Fault Output to latch. Inactive conditions
will follow the current state of the transmitter.
A point is declared inactive as follows: The receiver looks for at least one supervisory transmission (or
"check-in") from each supervised transmitter during the period of time programmed as the supervisory
window. The first time the receiver gets a supervisory signal from a transmitter within a new window, it
considers the transmitter active for the remainder of the window. If it fails to get another signal in the
following supervisory window, it declares the point inactive at the end of that window. The actual time
between a transmitter becoming inactive and being reported inactive will range from slightly more than the
supervisory window value to slightly less than twice the window period. For example, the default
supervisory window is 4 hours. If a transmitter becomes inactive, the inactive fault output will be triggered in
4 to 8 hours.
Note: If another output is assigned a global fault function, such as global tamper, that function will no longer
be reported at the Global Fault output.
Displaying fault and active conditions: Faults can be identified by point and type. Press the Review
Button while observing the status LEDs. Trouble conditions will be indicated by LEDs and the point will be
shown on the Transmitter Number Display. The display will show multiple faults, by stepping through
each trouble type in sequence, showing points affected. If a point is activated and/or has a trouble
condition, the Output LEDs will indicate which output is assigned to the activated and/or troubled point.