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Overview

The Outback S2

TM

includes a ground speed interface (GSI)

port on the back of the console.  The internal GSI module, as
factory installed, is pre-activated with a one-time
subscription code.  The GSI module converts the GPS
velocity signal of the Outback S2

TM

to a doppler radar

compatible pulse output.  This output may be used as the
ground speed input to any agricultural 3rd-party
monitor/controller designed for use with a DICKEY-john
RVS-II radar gun (or equivalent).

Installation - General Application

1.

First install the Outback S2

TM

and any other Outback

products as normal.  Refer to the respective products owner’s
manual for proper installation.

2.

Locate the GSI cable, P/N: 051-0128, included in this kit.

3.

Connect the smaller 6 pin connector end of the GSI cable

to the GSI port on the rear panel of the Outback S2

TM

console.  Twist connector firmly until it snaps into place.

4.

Connect the larger 4 pin connector end of the GSI cable to

the rate controller speed input.  An adapter cable may be
required.  See the reverse side of this page for controller
specific instructions.

5.

Power up the rate controller, the Outback S2

TM

, and any

other Outback consoles.  Once the Outback S2

TM

has acquired

GPS (or DGPS), and the vehicle is moving between 1 MPH
and 60 MPH, the internal GSI module will send output
pulses to the rate controller.

6.

It is necessary to calibrate the rate controller speed input

signal.  Refer to the owner’s manual provided with the rate
controller for proper speed input calibration.

December, 2005              DIP-OB017                Rev. A

Outback S2

TM

Ground Speed Interface Kit

P/N:  GSI-S2-RDJM

Outback Guidance

Hemisphere GPS, L.L.C.

2005 West Oregon Street, Box 238

Hiawatha, Kansas  66434 USA

Phone (785) 742-2949 • FAX (785) 742-4584

Customer Service & Ordering : 1-800-247-3808

www.outbackguidance.com

Pulse Output Signal Specifications

The GSI pulse output signal and connector is equivalent to a
DICKEY-john RVS II radar gun.  The output is a square wave
(Ground to +12 VDC Battery) with a frequency proportional to
GPS estimated ground speed, 44.21 Hz per MPH speed.
Minimum ground speed is 1 MPH, below which the output
frequency is zero.  Maximum ground speed is 60 MPH, above
which the output frequency is zero.

The pulse output connector is a 4-pin AMP #206429-1:

Pin 1 = Ground
Pin 2 = Pulse Output Signal
Pin 3 = +12 VDC Battery
Pin 4 = No Connection

The mating cable connector is a 4-pin AMP #206430-2.

GSI Cable

P/N: 051-0128

Outback S2

Console

GSI “PULSE OUT”

Connects To Rate

Controller Speed Input

Connect To S2

GSI Port

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