Kverneland IsoMatch Global User manual

Installation
Introduction 1
Features 2
Installation 3
Mounting the IsoMatch Global GPS antenna 5
GPS overview
GPS overview 8
Appendix
Troubleshooting 11
Specifications 12
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1Installation
Installation
Introduction
Congratulations on buying IsoMatch Global. The IsoMatch Global GPS antenna is a smart antenna that
tracks GPS and SBAS (WAAS and EGNOS) signals. The IsoMatch Global provides sub-meter performance
with 50 centimeter accuracy 95% of the time.
This chapter provides information on the following:
Features
Installation
Mounting the IsoMatch Global GPS antenna
Powering the IsoMatch Global GPS antenna
Connecting the IsoMatch Global GPS antenna to external devices

2Installation
Features
The IsoMatch Global has several new features that will enhance your product’s performance.
The main features are:
2x RS232 serial ports
LED
RS232 Serial Port
The RS232 serial port is used for NMEA 0183 GPS interface protocol.
LED
The IsoMatch Global uses one tri-colored LED:
Red indicates the power is ON.
Amber indicates a GPS lock
Flashing green indicates DGPS is being acquired.
Green indicates a DGPS solution.

3Installation
Installation
IsoMatch Global GPS antenna.
Warning! Improperly installed cables near machinery can be dangerous.
IsoMatch Global GPS antenna placement
Placement of the IsoMatch Global GPS antenna is crucial to the system’s operation. The GPS inside the
antenna computes a position based upon measurements from each satellite to the internal GPS anten-
na unit. Mount the IsoMatch Global GPS antenna on your point of interest.
Please make certain that there is an unobstructed view of the sky avaiable to the IsoMatch Global GPS
antenna, when choosing a mounting location.
This will ensure that the GPS satellites are not masked by obstructions, which can potentially reduce
system performance.

4Installation
To place the IsoMatch Global GPS antenna,
mount the antenna on, or close to the center of your point of measurement and
position the antenna so high as possible.
The recommended position for installing the IsoMatch Global GPS antenna is centered in long axis on
top of the tractor cabin roof, as much as possible to the front.

5Installation
Mounting the IsoMatch Global GPS antenna
The IsoMatch Global GPS antenna can be mounted in two ways:
Magnetic mount
Surface mount
Magnetic mount
The magnetic mount can be screwed into the bottom of the antenna and mounts to metal surfaces.
A metal disc and foam adhesive are included with each magnetic mount.
Use the foam to bond the metal disc to the desired mounting location, if there are no metal surfaces.
To use the metal disc and foam adhesive:
Clean and dry the mounting surface of the vehicle.
Remove the backing from one side of the foam adhesive and press the metal plate on it.
Remove the backing from the other side of the foam adhesive.
Press the metal plate onto the mounting surface of the vehicle.
Apply firm pressue to ensure good adhesion.

6Installation
Surface mount
As an alternative to the magnetic mount, the IsoMatch Global GPS antenna is easily attached to the sur-
face with four machine screws.
To surface mount the IsoMatch Global GPS antenna,
mark the mounting hole centers, as necessary, on the mounting surface,
place the antenna over the marks to ensure that the planned hole centers agree with the true hole
centers, then adjust.
Use a center punch on the hole centers in order to guide the drill bit.
Drill the mounting holes with a 3/16 inch bit appropriate for the surface mount.
Place the IsoMatch Global GPS antenna over the mounting holes and insert the mounting screws
through the bottom of the mounting surface and into the antenna.
Warning! Install the IsoMatch Global GPS antenna only hand-tight. Damage resulting from overthight-
ening the IsoMatch Global GPS antenna is not covered by warranty.
Note! The first start-up can take from 5 to 15 minutes depending on your location. This may vary de-
pending where you are in the world.
Note! The IsoMatch Global GPS antenna can take up to five minutes for a full ionospheric map to be
received from SBAS. Optimum accuracy will be obtained once the antenna is processing corrected po-
sitions using complete ionospheric information .

7Installation
Environmental considerations
The IsoMatch Global GPS antenna is designed to withstand various outdoor environments. However,
there are specific environmental limits that you should meet when storing and using the IsoMatch Glo-
bal GPS antenna.
See table Environmental specifications in the appendix.

8GPS overview
GPS overview
GPS overview
This chapter describes the various modes of operation and features of your IsoMatch Global GPS receiv-
er and internal sensors. For your convenience, both the GPS and differential correction of the IsoMatch
Global GPS antenna are pre-configured. The receiver will work out of the box, and for most applications,
little user set up is necessary. When powered for the first time, the IsoMatch Global GPS antenna will
perform a "cold start," which involves acquiring the available GPS satellites in view and the SBAS differ-
ential service.
GPS operation
The GPS engine is always operating, regardless of the DGPS mode of operation. The following sections
describe the general operation of the IsoMatch Global GPS engine.
Automatic tracking
The GPS engine within the IsoMatch Global GPS antenna automatically searches for GPS satellites, ac-
quires the signals and manages the navigation information required for positioning and tracking. This
is a hands-free mode of operation.
Receiver performance
The IsoMatch Global GPS antenna works by finding four or more GPS satellites in the visible sky and
uses the information those satellites provide to compute an appropriate position (typically within 2-3
meters). Since there is some error in the GPS data calculations, the IsoMatch Global GPS antenna also

9GPS overview
tracks a differential correction. The IsoMatch Global GPS antenna uses these corrections to improve its
position to less than 1 meter (3 feet) (GPS sensor specifications in the appendix).
There are two main aspects of GPS receiver performance:
Positioning
Satellite acquisition quality
When the IsoMatch Global GPS antenna is properly positioned on your vehicle, the satellites transmit
coded information to the antenna in a specific frequency that allows the receiver to calculate a range
to each satellite. GPS is essentially a timing system. The ranges are calculated by timing how long it
takes for the GPS signal to reach the GPS antenna. The GPS receiver uses a complex algorithm incorpo-
rating 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 3-dimensional coordinates.
Differential operation
The Radio Technical Commission of Marine services (RTCM) has a differential service intended for cor-
rection 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 IsoMatch Global GPS antenna is compatible with each of these differential services in addition to
Hemisphere GPS' patented e-Dif.
SBAS
A SBAS enabled IsoMatch Global GPS antenna operates automatically anywhere within the coverage
areas of the WAAS, EGNOS or other SBAS programs.

10GPS overview
The basics
WAAS is a free service of the FAA that allows regular GPS positions to be improved to a DGPS level of
accuracy. Tests using a IsoMatch Global GPS antenna have shown better than one -meter 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 IsoMatch Global GPS antenna will automatically scan and track the satellite signals. This automatic
tracking allows you to focus on other aspects of differential operation without the need to tune the re-
ceiver. The IsoMatch Global GPS antenna features two-channel SBAS tracking that provides an en-
hanced ability to maintain a lock on a SBAS satellite when more than one satellite is in view. This
redundant tracking approach results in more consistent tracking of a SBAS signal when in an area
where signal blockage of a satellite is possible.

11Appendix
Appendix
Troubleshooting
This table provides a checklist to troubleshoot common problems and their solutions for the IsoMatch
Global GPS antenna.
Problem Possible solution
Receiver fails to power Verify polarity of power leads.
Check integrity of power cable connections.
Check power input voltage 12 VDC.
Check current restrictions imposed by power source (maxi-
mum is 250 mA).
No data from IsoMatch Tellus GPS
antenna
Check receiver power status (LED).
Check integrity and connectivity of power and data cable con-
nections.
The volume of data requested to be output by the IsoMatch
Global GPS antenna could be higher than what the current
baudrate supports. Try using 19200 or higher as the baudrate
for all devices.

12Appendix
Specifications
These tables provides the power, mechanical, communication, environmental and DGPS specifications
for the IsoMatch Global GPS antenna.
Power specifications
No GPS lock Check the integrity of cable connections.
Verify IsoMatch Global GPS antenna’s unobstructed view of
the sky.
Item Specification
Input voltage 7 - 36 VDC
Power consumption < 3 W @ 12 VDC (typical)
Current consumption 249 mA @ 12 VDC (typical)
Power connec tor Cable mount environmentally sealed
Problem Possible solution

13Appendix
Mechanical specifications
Item Specification
Height 104 mm (4.1 in)
Width 145 mm (5.7 in)
Weight 0.558 kg (1.23 lbs)
Mounting options Magnetic mount
Fixed mount - low or high pole

14Appendix
Communication specifications
Item Description
Serial ports 2 full duplex RS232, CAN
Baudrates 4800 - 115200
Differential correction
I/O protocol
RTCM v2.3, RTCM v3
Data I/O protocol NMEA 0183, Hemisphere GPS binary and NMEA 2000

15Appendix
Environmental specifications
Item Specification
Operating temperature -40ºC to +70ºC (-40ºF to +158ºF)
Storage temperature -40ºC to +85ºC (-40ºF to +185ºF)
Humidity 95%
Enclosure IP67
Compliance FCC, CE ISO 14982
Shock EP455 5.41.1
Vibration EP455 5.15.1
EMI certification FCC part 15, CISPR 22

16Appendix
GPS sensor specifications
Item Specification
Receiver type L1, GPS
Channels 12 L1CA GPS, 12 L1P GPS, 3 SBAS or 3 additional L1CA GPS
GPS sensivity -142 dBm
SBAS tracking 3-channel, parallel tracking
Update rate 10Hz standard, 20HZ optional with subscription
Horizontal accuracy RMS(67%) 2DRMS(95%)
SBAS (WAAS)* <0.3 <0.6
Autonomous, no SA* <1.2m <2.5m
Cold start <60 s typical (no almanac and RTC)
Warm start <30 s typical (almanac and RTC)
Hot start <10s typical (almanac, RTC and position)
Maximum speed 1,850 kph (999kts)

17Appendix
*Depends on multipath environment, number of satellites in view, satellite geometry, baseline length
(for local services) and ionspheric activity.
**Depends on multipath environment, number of satellites in view, satellite geometry) and ionspheric
activity.
Maximum altitude 18,288 m (60,000 ft)
Item Specification