Wiring To A Db-9 Pc Serial Connector - Garmin GPSMAP 4008 Installation Instructions Manual

Wiring to an Optional Alarm
The GPSMAP 4000/5000 series unit can be used with a lamp, a horn, or both, to sound or flash an alert when the unit displays a message. The
alarm does not need to be wired for the 4000/5000 unit to function. The alarm circuit pulls low when the alarm sounds. The maximum current is
100 mA, and a relay is needed to limit the current from the unit to 100 mA. A switch can be installed to select between visual and audible alerts.
Garmin
GPSMAP 4000/5000
Series Unit

Wiring to a DB-9 PC Serial Connector

The GPSMAP 4000/5000 series unit can be connected to a PC with a serial port by wiring the unit to a DB-9 serial connector.
Garmin
GPSMAP 4000/5000
Series Unit

FUSE
7.5A - 42V
POWER
CABLE
NMEA 0183
CABLE
Wiring to a lamp, a horn, or both.
WIRE
SEE TABLE FOR
WIRE COLORS
FUSE
7.5A - 42V
RED (POWER)
POWER
BLACK (PWR GND)
CABLE
BLACK (DATA GND)
RX / B(-)
>
NMEA 0183
CABLE
RX / A(+)
>
TX / A(-)
>
TX / B(+)
>
Wiring to a DB-9 Serial PC Connector
+
BATTERy
10-35 VDC
WIRE
COLOR
RED (POWER)
BLACK (GND)
RELAy
yELLOW (ALARM)
100 mA MAX
COIL CURRENT
-
+
BATTERy
10-35 VDC
DB-9 PIN
NUMBERS
PIN 5: GND
PIN 3: TX
PIN 2: RX
UNCONNECTED
GPSMAP 4000/5000 Series Installation Instructions
-
HORN
LAMP
DB-9 Serial
PC Connector
2
3
4
5
>
>
End View
6
7
8
9