Page 3-14
GTS 8XX/GPA 65 Installation Manual
Revision 4TP
190-00587-00
k)
Receiver Calibration fault. Check antenna installation and all cable connections and retry self
test. Ensure that self test occurs in area free of buildings and large objects that can reflect signals.
If fault persists, return unit to Garmin for service.
NOTE
Receiver self-calibration is performed prior to the transmitter self-calibration. In the
event that a receiver calibration fault occurs, a transmitter self-calibration will not be
performed.
l)
Transmitter Calibration fault. Check antenna installation and all cable connections and retry self
test. Ensure that self test occurs in area free of buildings and large objects that can reflect signals.
If fault persists, return unit to Garmin for service.
NOTE
A transmitter self-calibration can only be performed after a successful receiver self-
calibration.
m)
Barometric Altitude Input fault – Own ship barometric altitude calculation is invalid or has timed
out. Check wiring to source of barometric altitude and ensure that source is operating. Fault will
clear as soon as valid barometric altitude data is received.
n)
Main Board Temperature fault – Main board temperature or RF receiver temperature is greater
than 90° Celsius or less than -60° Celsius. Fault will persist until internal temperature returns to
acceptable range.
o)
TCAS Equipage Timeout fault – TCAS Equipage data is not being received or has timed out for
800ms. Check wiring to TCAS Equipage data source and ensure that source is operating. Fault
will clear as soon as valid TCAS Equipage data is received.
The self test feature also checks the following external parameters:
a)
Mag Variation – Magnetic variation data (difference between ‘True’ North and Magnetic North)
is available.
b)
GPS Status – GPS Position, Velocity and Time data is available
c)
Display #1 status - Check of Traffic display #1 discrete input is inactive for 2 or more seconds.
d)
Display #2 status - Check of Traffic display #2 discrete input is inactive for 2 or more seconds.
e)
Radio Altimeter Input status – Radio altimeter is installed and radio altimeter input status is
inactive.
f)
Magnetic Heading Input status – Invalid magnetic heading data is received.
g)
Maintenance/Data logger Input status – Data logger is inhibited if active.
h)
Self Test Inhibit status – Self test is inhibited if active.
