190-01134-11
GMA 350/350c/350H/350Hc Installation Manual
Rev. J
Page A-3
J2-13
ICS Mute Inhibit*
J3502-13
MARKER HI SENS* IN
If previous GMA 340 wiring connected
this input to ground, default GMA 350/
350H configuration will result in
Marker Beacon RX mode always in HI
SENS.
If previous wiring connected this input
only to J3502-14, there is no compati-
bility issue
Option 1: Remove previous wiring or
connect to a switch to ground to allow
for pilot selectable MKR SENS mode.
Option 2: Using the GMA 350/350H
configuration tool, configure the
J3502-13 input for no function instead
of MKR HI SENS.
NOTE: The feature to mute music
during ICS is still available with the
configuration tool.
J2-14
ICS Mute Inhibit Return
J3502-14
PASS ISO TOGGLE/ICS KEY* IN
If previous GMA 340 wiring connected
this input to ground, default GMA 350/
350H configuration will result in PASS
ICS state toggled each power-up.
If previous wiring connected this input
only to J3502-13, there is no compati-
bility issue.
Option 1: Remove previous wiring or
connect to a pushbutton to ground
allow passengers to toggle ICS state
or configure as PASS ICS key.
Option 2: Using the GMA 350/350H
configuration tool, configure the
J3502-14 input for no function instead
of PASS ISO TOGGLE/ICS KEY* IN.
NOTE: The feature to mute music
during ICS is still available with the
configuration tool.
J2-15
High Music Gain Select*
J3502-15
ALERT 2 AUDIO IN HI
None if not desired to use ALERT 2
AUDIO IN source.
None.
NOTE: GMA 350/350H music gain is
both configurable and pilot
adjustable. If the pilot adjustment
range does not yield desired volumes,
configuration offset can be adjusted
as desired.
J2-17
8 Ohm Select*
J3502-17
RS-232 IN
If previous GMA 340 wiring connected
this input to ground, there will be no
damage or effect in GMA 350/350H
operation.
None if RS-232 communication to
other Garmin equipment is not
needed. Otherwise, remove old wir-
ing and connect RS-232 port to as
documented in system install
instructions.
J2-18
Reserved
J3502-18
RS-232 OUT
None
None
J2-19
Tone Enable*
J3502-19
PA MODE SELECTED* OUT
If previous GMA 340 wiring connected
this pin to ground, there will be no
damage or effect in GMA 350/350H
operation.
None unless new PA MODE
SELECTED* OUT function is desired
for wiring interface to other
equipment.
J2-21
Swap Return
J3502-21
RESERVED
If previous GMA 340 wiring used this
pin as the return path for the J2-20
Swap input, the default GMA 350/
350H configuration will continue to
support this function without a wiring
change.
None
J2-22
NC
J3502-22
PLAY KEY* IN
None
None
Table A-1. GMA 340/GMA 350 Pin Differences
GMA 340
Connector/
Pin Number
GMA 340
Pin Function
GMA 350/350H
Connector/Pin
Number
GMA 350/350H
Pin Function
Possible GMA 340 Wiring
Compatibility Issues
Corrective Action