Ag Leader PFadvantage Cotton Yield Monitor Operators Manual - Manual (Page 91)

PFadvantage Cotton Yield Monitor
Ag Leader Technology Using a GPS Receiver
September 2005 4-15
Connecting a
Receiver to the
Monitor The GPS receiver connects to Port 1 on the monitor. The GPS receiver
normally has a separate power cable that connects to a 12-volt power
source. You can supply power to the GPS receiver through the GPS cable
that connects to Port 1. Pin 4 is switched 12 volts and pin 6 is ground.
The GPS manufacturer supplies the cable that connects the GPS receiver to
the monitor. If the cable provided with your receiver is not specifically
designed for the PF3000, you must use a GPS null modem cable that you
can purchase through your Ag Leader Technology dealer. You will know
that you need to use the GPS null modem cable if your GPS cable does not
insert into port 1 of the PFadvantage Cotton Yield Monitor or if the monitor
does not receive the GPS signal when the GPS cable is connected (no D or
G in the top display).
IMPORTANT: Do not use a null modem that you buy from a store
because most have the wrong connections and can cause damage.
NOTE: The GPS null modem cable switches pins 2 and 3, and pin 5 goes
straight through. Refer to the reference section for the pin-outs of Port 1.
GPS Status
Indicator The PFadvantage Cotton Yield Monitor will display a "D" and "G" on the
top right corner of the display to indicate you have a GPS signal. If you do
not have a GPS receiver connected you will see two dashes "- -".
NOTE:
•
A "D" indicates that you have a differential signal.
•
A large "G" indicates that you have a GPS signal and your GPS
receiver is tracking four or more satellites.
•
A small "g" indicates that you have a GPS signal but your GPS receiver
is tracking only three satellites.
Your GPS receiver must track four or more satellites (large "G") to get an
elevation reading.
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