GPS 1500 User Manual
PN 2005906 Rev. E
OVERVIEW
INTRODUCTION
The GPS 1500 is a smart antenna that tracks GPS and SBAS (WAAS and EGNOS) signals.
CABLE CONNECTIONS
DISPLAY
GPS OVERVIEW
The receiver is preconfigured and will work out of the box for most applications. When powered for the
first time, the reciever will perform a “cold start,” which involves acquiring the available GPS satellites in
view and the SBAS differential service.
GPS OPERATION
The GPS engine is always operating, regardless of the DGPS mode of operation. The GPS engine
automatically searches for GPS satellites, acquires the signals, and manages the navigation information
required for positioning and tracking.
Receiver Performance
The receiver finds four or more GPS satellites in the visible sky and uses the information provided by
those satellites to compute an appropriate position (typically within 2-3 meters). Since there is some
error in the GPS data calculations, the reciever also tracks a differential correction. It uses these
corrections to improve its position to less than 1 meter (3 feet)
There are two main aspects of receiver performance:
• Positioning
• Satellite acquisition quality
Satellites transmit coded information to the reciever in a specific frequency that allows the receiver to
calculate a distance to each satellite. GPS is essentially a timing system. The distance is calculated by
timing how long it takes the signal to go from the satellite to reciever.
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The receiver uses a complex algorithm incorporating satellite locations and ranges to each satellite to
calculate the geographic location. Reception of any four or more of these signals allows a GPS receiver
to compute three-dimensional coordinates.
DIFFERENTIAL OPERATION
The Radio Technical Commission of Marine services (RTCM) has a differential service intended for
correction services. This includes the Space Based Augmentation Systems (SBAS), such as the Wide
Area Augmentation System (WAAS) and the European Geo-stationary Navigation Overlay System
(EGNOS). The GPS 1500 is compatible with each of these differential services.
SBAS
A SBAS-enabled reciever operates automatically anywhere within the coverage areas of the WAAS,
EGNOS or other SBAS programs.
WAAS and EGNOS explained
• WAAS is a free service of the Federal Aviation Administration (FAA) that allows regular GPS
positions to be improved to a DGPS level of accuracy. WAAS is available everywhere in the U.S.,
including Alaska, Hawaii and Puerto Rico. It can also be picked up in some of the border areas of
Mexico and Canada. There are no subscription charges incurred when using WAAS.
• EGNOS is a similar service that is available in Europe and western Russia.
Automatic SBAS tracking
The reciever will automatically scan and track satellite signals. This automatic tracking allows you to
focus on other aspects of differential operation without the need to tune the receiver. The GPS 1500
features two-channel SBAS tracking that provides an enhanced ability to maintain a lock on a SBAS
satellite when more than one satellite is in view. Thi s redundant tracking approach results in more
consistent tracking of a SBAS signal when in an area where signal blockage of a satellite is possible.
e-Dif
A reciever that is equipped with e-Dif capabilities can operate anywhere in the world where normal GPS
signals can be viewed. e-Dif can be used anywhere on the globe where a GPS lock can be achieved.
e-Dif is for our customers who are not able to receive other types of differential signals due to location or
budget.
Once the reciever computes a differential correction, the user can operate for unlimited time and provide
good relative accuracy. Alternatively, the operator can regularly update e-Dif to maintain absolute
accuracy (typically less than 1 meter over 40 minutes).
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SETUP
UTILITY SETUP PROCEDURE
The default GPS settings are 4800 baud, 1 Hz GGA and VTG
NMEA strings.These settings will work for all Ag Leader
products.However, if the equipment that you are using requires
higher baud or Hertz rates, you many need to reconfigure the
GPS using the following procedure.
1. Download the Pocket Max PC.exe executable file from Ag
Leader’sweb site:
http://www.agleader.com/support.php?Page=downloads
2.Double click on Pocket Max PC.exe.
3. The Pocket Max PC program appears. On the Serial Port
setting, select the correct COM Port that the GPS is connected
to. Also, check the Auto Baud check box.
Note: If the utility cannot find the correct GPS receiver, use a different COM port and repeat. Also,
make sure that the GPS is powered.
Pocket PC with COM Port and Auto-Baud selected
4.Press the Search button. The utility then searches for the
correct GPS receiver.
Utility after finding correct GPS receiver with OK button showing
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5. Once the utility finds the correct GPS receiver, the OK
button appears at the bottom of the window. Press the OK
button.
6.When the new window appears, click the Setup tab.
7. Under the “This Port” column, (located on the left-hand side of
the window) use the drop-down menu to select the correct Hz
rate, such as 5 Hz.
Selecting correct Hz rate on a NMEA string
ote:
N
Ag Leader’s products require the GGA and VTG NMEA strings. To find out the required NMEA
strings for other products, check with the manufacturer
8.At the bottom of the drop-down menu, select the correct
baud rate. These range between 4800 and 115,200.
•Ag Leader’s PF series monitors require a 4800 baud rate.
•Ag Leader® Integra, InSight and Edge require a 38400
ate
r
Dealer Training Invitation-updated 1_6_2010.pdf
2010
baud
9. When setup is complete, press on the Exit button, which is the
red X
located in the right-hand corner of the window.
10. The Exit Options window appears, asking you to
choose one of the following options. Always press Exit and
Save.
Exit Options window
Note:
If you choose a selection other than Exit and Save, your settings will not be saved.
11.A series of messages appears, after which a Configuration
Report will appear. At the configuration report, you can view your
saved settings. However, you cannot make changes to these
settings at this window
12.Press Close to end the utility program
New Receiver Configuration Report
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INSTALLATION
Manual Mark In
1
Violet
TXB 2 White
RXB 3 Gray
Can High 4 Pink
Signal Ground
5
Brown
TXA 6 Green
3
One PPS 7 Orange
RXA 8 Blue
2
Can Low 9 Tan
Power In (12V)
10
Red
4
Power Ground
11
Black
5
2 (Black)
Speed Out
12
Yellow
1 (White)
The GPS 1500 is a smart antenna that tracks GPS and SBAS (WAAS and EGNOS).
Deutsch Connector Receptacle
The picture provides a front view of the Deutsch connector
receptacle’s numbering.
Deutsch connector receptacle numbering
DB-9 CONNECTION TABLES
DB-9 Connection for Cable 4002673-18
Signal GPS Wire Color DB-9
Deutsch
Receptacle
6
HDB-15 Connection for Cable 4002674-18
Manual Mark In
1
Violet
TXB 2 White
RXB 3 Gray
Can High 4 Pink
Signal Ground
5
Brown
TXA 6 Green
14
One PPS 7 Orange
RXA 8 Blue
13
Can Low 9 Tan
Power In (12V)
10
Red
10
Power Ground
11
Black
11
2 (Black)
Speed Out
12
Yellow
1 (White)
Manual Mark In
1
Violet
TXB 2 White
RXB 3 Gray
Can High
4
Pink
Signal Ground
5
Brown
TXA 6 Green
2
One PPS
7
Orange
RXA 8 Blue
3
Can Low
9
Tan
Power In (12V)
10
Red
1 (White)
Power Ground
11
Black
5
2 (Black)
2 (Black)
Speed Out
12
Yellow
1 (White)
Signal GPS Wire Color HDB 15
Deutsch
Receptacle
DB-9 Connection for Cable 4002675-18
Signal GPS Wire Color DB-9
Deutsch
Receptacle
Cigarette Plug
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CABLE INTERFACE
The cable options include:
• DB9 serial
• Speed
• Power
Additional extension cables may be purchased, as necessary, for other installations. This allows the
reciever to be quickly and easily moved from one installation to another. If an extension cable is
damaged in the field, it can be replaced without returning the complete system.
EXTENSION POWER/DATA CABLE
The system is quickly installed with one of the various extension cables. Keep in mind that the data
connector communication port must reach to connect to a data storage device or guidance system.
When choosing a route for the extension cable:
• Avoid running cables in areas of excessive heat.
• Keep cables away from corrosive chemicals.
• Keep the cables away from rotating machinery.
• Do not bend excessively or crimp the cables.
• Avoid placing tension on the cables.
• Remove unwanted slack from the extension cable at the receiver end.
• Secure along the cable route using plastic wraps.
WARNING: Improperly-installed cables near machinery can be dangerous
ROUTING THE CABLE TO THE CAB
Follow these steps to route cable into the cab:
1. Find a place on the right side or bottom of the cab to route cable into cab (the point of entry is up to
you).
Note: The cable can be routed through windows or doors but make sure that there will be no damage
to the cable.
2.Attach the GPS cable from the antenna to Port 1 of the PF3000, Port 1 on the YM 2000, or the GPS
port on the InSight, EDGE or Ag Leader® INTEGRA display.
• If yo
• If you are connecting your reciever to an alternative logging or mapping device (i.e. handheld or
u are attaching the reciever to a PF Advantage or PF 3000 Pro without GPS, attach the G
able to AUX. 1 Port.
c
laptop computer), refer to your Operator's Manual for that particular unit for correct cabl
connection.
PS
e
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Cable Part Numbers
Ag Leader® INTEGRA, EDGE, InSight, PF3000, YM2000: 4002673-18
PF Advantage: 4002674-18
Mobile Logging (Laptop and Handheld): 4002675-18
MOUNTING THE GPS 1500
PLACEMENT ON VEHICLE
Placement is crucial to the system’s operation. The GPS engine inside the reciever computes a position
based upon measurements from each satellite to the internal GPS antenna unit. Mount the reciever on
your point of interest. When choosing a location to mount the antenna, please make certain that there is
an unobstructed view of the sky available to the GPS 1500 smart antenna. This will ensure that GPS
satellites are not masked by obstructions, which can potentially reduce system performance.
To place the GPS 1500
1. Mount the receiver on, or as close to, the center of your point of measurement.
2. Position the receiver as high as possible.
Below is an illustration of the ideal location to place the receiver on a vehicle.
PS 1500 placement on a vehicle
G
RADAR SPEED OUTPUT
The reciever is capable of outputting a simulated radar speed pulse. This simulates a similar pulse
output that you would receive from a standard radar gun.
To use the radar speed input you must set the speed input to RADAR under the appropriate setup
screen for the monitor/display. Additional cables will also be required to obtain the simulated speed
output. Contact Ag Leader’s AutoFarm’s Technical Support team for these additional cables.
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RADAR SPEED COMPATIBILITY
Adaptor cables are available through Ag Leader TechnologyAutoFarm for the following three brands of
monitors: Dickey-John, Raven, and Hiniker. T hese adaptor cables provide the ability to use the GPS
1500 in place of a radar gun. If using the reciever as a stand-alone antenna, you will need to obtain an
Auxiliary Power/Data Cable and the appropriate Radar Speed Adaptor Cable.
RADAR SPEED DEFAULT SETTINGS
The default output parameter provided in the reciever is a minimum output speed of .5 miles per hour (.8
kilometers per hour), meaning speed pulses will not be output below this speed. The default radar pulse
output rate is 45 Hz per 1 MPH.
Radar Speed Adaptor Cables
Hiniker adaptor cable: 3000478
Raven adaptor cable: 3000479
Dickey John adaptor cable: 3000480
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CONNECTIONS TO EXTERNAL DEVICES
The serial ports of the GPS 1500 operate at the RS-232C interface level to communicate with external
data loggers, navigation systems and other devices. The serial ports are accessible via the extension
cable that features a DB9 female data connector. The serial ports are also used for firmware updates.
Note: For successful communication, the baud rate of the GPS 1500 serial ports must be set to
match that of the devices to which they are connected.
The picture displays the numbering for the extension cable’s DB-9
socket connector (female). The associated numbering for the plug
connector (male) is a mirror reflection of the scheme shown below.
DB-9 socket numbering
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FACTORY PARAMETERS
Serial Port Settings
This table identifies default settings for the GPS 1500 configuration.
Serial Port
Baud
Rate
Data
Bits
Parity Stop Bit
Interface
Levels
Update Rate
Serial port A
4800
9600
19200
38400
8 None 1 RS-232C 1 to 10 Hz
TROUBLESHOOTING
LED STATUS INDICATORS
The GPS 1500 uses one tri-colored LED, which indicates important status information.
• Red indicates the power is on
• Amber indicates a GPS lock
• Flashing green indicates DGPS is being acquired
• Green indicates a DGPS solution
VERIFYING DIFFERENTIAL GPS SIGNAL
Differential GPS (DGPS) is a data collection technique that uses extra GPS receivers and some
complex calculations to increase the accuracy of GPS positions. DGPS is made possible because of an
enhancement to the Global Positioning System that uses a network of fixed, ground-based reference
stations to broadcast the difference between the positions indicated by satellite systems and other
known fixed positions.
You should periodically check the monitor to ensure that you are receiving a Differential GPS signal, as
this could affect the quality of the data you are logging. As an example, your GPS receiver must track
four or more satellites to get an elevation reading.
TROUBLESHOOTING CHECKLIST
The following is a checklist to troubleshoot common problems and their solutions for the GPS 1500.
Receiver fails to power
• Verify polar ity of power leads
• Check integrity of power cable connections
• Check power input voltage (7 - 36 VDC)
• Check current restrictions imposed by power source (maximum is 250
mA) No data from re ceiver
• Check receiver power status (LED)
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• Check integrity and connectivity of power and data cable connections
• The volume of data requested to be output by the reciever could be higher than what the current
baud rate supports. Try using 4800, or higher, as the baud rate for all devices.
No GPS lock
• Check integrity of cable connections
• Verify receiver ’s unobstructed view of the sky
No SBAS lock
• Check integrity of cable connections
• Verify receiver ’s unobstructed view of the sky
• Check SBAS visibility map
APPENDIX
SPECIFICATIONS
The following three tables provide the power, mechanical, communication, environmental and DGPS
specifications for the GPS 1500.
Power Specifications
• Input voltage: 7 - 36 VDC
• Power consumption: < 2 W @ 12 VDC (typical)
• Current Consumption: 150 mA @ 12 VDC (typical)
• Power connector: Cable mount environmentally sealed
Mechanical Specifications
• Height: 54.7 mm (2.2in)
• Width: 129.5 mm (5.1 in)
• Weight: 0.66 kg (1.45 lbs)
• Mounting Options: Magnetic mount
Environmental Specifications
• Operating temperature: -30° C to +70° C (-22° F to + 158° F)
• Storage temperature: -40
• Humidity: 100%
• Enclosure: Waterproof and dust proof
° C to +85° C (-40° F to + 185° F)
• Compliance: FCC, CE
• Shock: IEC 68-2-27
• Vibration: ISO 16750-1
• EMI certification: FCC part 15, E-Mark
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GPS 1500 ACCESSORIES
• GPS 1500 Receiver: 4001372
• Antenna Bracket - L-shaped: 2000161
Documentation
• GPS 1500 User Manual: 2005906
• Product Registration: 2002868
Cables
• Cable for YM 2000, PF 3000, InSight, EDGE and Ag Leader® INTEGRA displays: 4002673-18
• Cable for PF Advantage: 4002674-18
COMPANY WARRANTY STATEMENT
WARRANTY
Ag Leader Technology will repair or replace at no charge any component of the GPS 1500 that fails
during normal service, while being used in an approved application, within two years of the warranty start
date. Warranty is not provided for damage resulting from abuse, neglect, accidents, vandalism, acts of
nature, or any causes that are outside of the normal intended use of the receiver. Ag Leader Technology
shall not be liable for indirect, incidental, or consequential damages to the dealer, end user, or third
parties arising from the sale, installation, or use of any Ag Leader Technology product.
COPYRIGHT NOTICE
Ag Leader Technology has copyrighted (© 2011) the contents of this manual. No reproductions may be
made without first obtaining the consent of Ag Leader Technology.
SERVICE AND SUPPORT
If you have additional questions or feel that you may be having a problem with your system, call your
local Ag Leader Technology dealer or call us directly at the phone number below. If we determine you
have a hardware failure, we will ship replacement hardware immediately.
Our Technical Support Department can be reached by phone at 515-232-5363, extension #1; or through
email at support@agleader.com.
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PRODUCT REGISTRATION
Ag Leader Technology stands by all new products with a two-year limited warranty from the warranty
start date. The warranty start date will initially be set to the date on which your product is shipped from
Ag Leader Technology.
If you return this registration/warranty card within 30 days of purchasing this product from your dealer,
the warranty start date will be changed to the date that you purchased the product from your dealer. Ag
Leader Technology reserves the right to request proof of the date of purchase stated.
Timely product registration will allow you to receive important product bulletins, upgrade information, and
notice regarding product training in your area.
TO REGISTER:
Register On-Line at www.agleader.com. Click on Product Registration from the Quick Links list on the
Ag Leader Home Page.
OR
Return this sheet in the enclosed postage-paid envelope; or by FAX: 515-232-3595.
Ag Leader Technology
2202 South Riverside Drive
P.O. Box 2348
Ames, Iowa 50010
Name:
Street Address:
City, State, ZIP:
Phone # (including area code):
Mobile Phone #: Fax #:
Email address:
Ag Leader Dealer:
Date Purchased:
GPS Antenna Serial #:
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