Garmin GMA 340 Installation Manual page 6

GMA 340 HARDWARE MOD LEVEL HISTORY
The following table identifies hardware modification (Mod) Levels for the GMA 340 audio panel. Mod
Levels are listed with the associated service bulletin number, service bulletin date, and the purpose of the
modification. The table is current at the time of publication of this manual (see date on front cover) and is subject
to change without notice. Authorized Garmin Sales and Service Centers are encouraged to access the most up-to-
date bulletin and advisory information on the Garmin Dealer Resource web site at www.garmin.com using their
Garmin-provided user name and password.
MOD SERVICE
LEVEL BULLETIN
NUMBER
1 0103
2 0113
3 0208B
4 0209
5 0210
6 0212
7 0213
8 0221
* Not released at time of publication.
Page iv
Rev. L
SERVICE
BULLETIN
DATE
2-2-01 Configurable option to mute other com audios when
transmitting.
6-13-01 Provides times ten gain (20 dB) for entertainment music
system.
5-17-02 Provides correct marker beacon output loading for interface
with a Sandel SN3308 EHSI.
5-2-02 Provides failsafe operation when monophonic headsets are
used in a stereo installation.
5-2-02 Provides switchable On/OFF times ten gain (20 dB) for
entertainment music system.
7-16-02 Filter capacitors added to prevent power supply noise from
interfering with a GDL 49.
8-26-02 Prevents current limiting resistors from becoming shorted to
the chassis.
* Adds a failsafe warning audio to the GMA 340.
PURPOSE OF MODIFICATION
GMA 340 Installation Manual
190-00149-01