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eTrex data cable wiring diagram
This
is how I have my eTrex connector wired up. I have been using it
in this configuration for a couple of years without any problems.
Having said that, this information is intended for those who are
confident enough to try and make their own data cable. Incorrect
wiring may cause damage to your GPS. Firstwaypoint.com takes no
responsibility for any errors or omissions, or for an damage caused
to your eTrex when using a non-genuine connector.
Standard PC
Comm port
Suggested
eTrex Wiring Diagram
Don't
fall for the trap of soldering the white wire onto the wrong pin.
Remember you are working from behind the plug!
eTrex
Pinouts
Serial
Port Pinouts
DB-9 (9 pin) and DB-25 (25 pin) pin assignments
| DB-9
Pin |
Corresponding
DB-25 Pin |
Signal |
Function |
|
2
|
3
|
RD
|
Received
data
|
|
3
|
2
|
TD
|
Transmitted
data
|
|
8
|
5
|
CTS
|
Clear
to send
|
|
7
|
4
|
RTS
|
Request
to send
|
|
6
|
6
|
DSR
|
Data
set ready
|
|
5
|
7
|
SG
|
Signal
ground
|
|
4
|
20
|
DTR
|
Data
terminal ready
|
|
1
|
8
|
DCD
|
Data
carrier detect
|
Pin
layouts for DB-9 and DB-25 connectors
|
1 . . . 5
6 . . 9
|
Pin
numbers for DB-9 Male Connector layout looking at
the pins
|
|
5 o o o
1
9 o o 6
|
Pin
numbers for DB-9 Female Connector looking at the
sockets
|
|
1 . . . . . . . . . .
. 13
14 . . . . . . . . . . 25
|
Pin
numbers for DB-25 Male Connector layout looking at
the pins
|
|
13 o o o
o o o o o o o o 1
25 o o o o o o o o o 15
|
Pin
numbers for DB-25 Female Connector looking at the
sockets
|
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Disclaimer:
This information is intended for those who are confident enough
to try and make their own data cable. Incorrect wiring may
cause damage to your GPS. Firstwaypoint.com
takes no responsibility for any errors or omissions, or for
an damage caused to your eTrex when using a non-genuine connector.
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