Overview
The Outback S2TM 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 S2TM 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 S2TM 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 S2TM
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 S2TM, and any
other Outback consoles. Once the Outback S2TM 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 S2TM
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
