26
P2
LORAN C and GPS CABLING
The Proton 4 accepts standard NMEA 0183 serial data (NOT USB) information obtained from a
connected GPS or Loran C receiver to display your boat’s heading and position (Latitude and
Longitude). For most GPS systems you will need to enable the data output, select a version of NMEA
0183 to output and select the output’s baud rate (data speed). These selections are usually made
through your receiver’s Setup menu. Please refer to your GPS or Loran C users manual for detailed
instruction.
Baud rate – The Proton 4 uses the industry standard speed of 4800 baud for the NMEA 0183 interface.
If your receiver offers a selection of alternate baud rates, select 4800.
The Proton 4 accepts only GLL or GGA position information sentences and is limited to a maximum
of 6 decimal place precision. The information sent from the GPS or LORAN must include either the GLL
or GGA sentence with no more than 6 decimal place precision.
The GPS or LORAN connects to a 5 pin DIN connector on the the Proton 4 control panel. Two interface
cables are supplied.
Interface Cable #1: A modified three pin DIN connector on one end, and bare wires on the other. This
cable connects to the Proton 4 as follows
(Note: The wire has (4) conductors, only the red and black wires are used):
Interface Cable #2: (GPS ADAPTOR) A modified three pin DIN connector on one end, and a 9 pin D
connector on the other. Many GPS Systems are supplied with a 9 pin D serial data output cable.
Use Interface Cable #2 to adapt the 9 pin D serial data cable to connect to the 5 pin DIN connector
on the Proton 4 control panel.
NOTE:
The GPS must be cabled to the Proton 4, operating and a position fix must be obtained before
turning on the Proton 3/4 power switch. The Proton 4 checks for a GPS on power up only. If the
GPS is not turned on when the Proton 4 is turned on, the Proton 4 will never see it.
PIN 1 = Red
PIN 2 = Black
LORAN C/GPS
(with 0183 interface)
Signal
Return
Red
Black
3
2
1
To 5 pin plug
in Control Box
P4 Control Box
Note: Cable has 4
conductors. Only
2 are used.
Pins 4 and 5 are not used
1
5
2
3
4
P1.1
NOSE CONE REMOVAL
The nose cone is constructed of solid black epoxy.
1. Remove the three screws holding the cone in place-they should not be tight.
2. Observe the filed notch in the cone next to the top screw. When reinstalling, this notch must line
up to the top hole or the other holes will not line up.
3. Insert a large/long screwdriver into the vent hole next to the cone and push/pry the cone out (it is
snug fit).
