190-01134-11
GMA 350/350c/350H/350Hc Installation Manual
Rev. J
Page 4-9
4.5.8
Alert Inputs
These are unswitched inputs intended for use with alert sources such as altitude, terrain, auto-pilot or other
aural status indications.
FAILSAFE WARN AUDIO IN HI is heard during normal operation as a fifth alert input.
CAUTION
During failsafe mode both FAILSAFE WARN AUDIO IN HI and COM 1 AUDIO INPUT
are connected to the PILOT HEADSET LEFT OUTPUT. During this time the output of the
COM 1 radio and the output of the device connected to FAILSAFE WARN AUDIO IN HI
will become shorted together, potentially causing damage or interference. If the
FAILSAFE WARN AUDIO IN HI is used, it may be necessary to install summing resistors
in series between these sources and the inputs to the audio panel to protect the outputs
from damage.
4.5.9
Speaker Outputs
Table 4-13. Alert
Pin Name
Connector
Pin
I/O
ALERT 1 AUDIO IN HI
J3501
31
In
ALERT 1 AUDIO IN LO
J3501
32
--
ALERT 2 AUDIO IN HI
J3502
15
In
ALERT 2,3,4 AUDIO IN LO
J3501
43
--
ALERT 3 AUDIO IN HI
J3501
29
In
ALERT 4 AUDIO IN HI
J3501
44
In
FAILSAFE WARN AUDIO IN HI
J3502
29
In
Table 4-14. Speaker
Pin Name
Connector
Pin
I/O
SPEAKER AUDIO OUT LO
J3502
43
Out
SPEAKER AUDIO OUT HI
J3502
44
Out
