Product Info - Fertilizer Dealer Supply

Product Info - Fertilizer Dealer Supply
SkyTrak
TM
(21 4) 357 -459 1
INCORPORATED
DALLAS TEXAS
(800 ) 3 45-8 105
GPS VELOCITY SENSOR
Installation, Operation & Maintenance
Form IOM-SK-1007-D, Rev.01
Standard Features
 Completely self-contained (GPS, receiver, antenna,
and velocity to pulses converter)
 16 Channel GPS receiver
 Can be used with all equipment that is compatible
with radar or pulse type speed sensors
 0.1 MPH accuracy from 0.5 to 50 MPH
 Surface, bracket, pipe, or magnetic mount
 UV stable, plastic enclosure
 7 updates per second
SkyTrak is a GPS based velocity sensor that
produces true ground speed pulses to equipment
designed to interface with radar ground speed
and wheel speed sensors. SkyTrak can be
quickly transferred from vehicle to vehicle,
provides high accuracy, and is easy to install and
use. Simply make the connection to your
monitor/control equipment, perform the same
calibration you would use for other pulse sensors,
and you’re ready to go.
SK-1007-D
Physical Specifications
Cable Length
Power
Backup Battery
Size
Operating Temp.
Storage Temp.
Humidity
15 feet
4.8 to 16 Volts, 0.1 Amps max.
CR2032 Lithium Coin
4.50” x 2.43”
-40°C to +65°C (-40°F to +149°F)
-40°C to +80°C (-40°F to +176°F)
100% Condensing
Performance Specifications
Velocity Accuracy 0.1 MPH (without SA)
GPS Update Rate
7 Hz.
Backup Battery Life >3 years
Acquisition Rate
Cold Start
Warm Start
<45 seconds
<33 seconds
DICKEY-john ® Connector Features:
4-pin AMP, radar compatible
58.94 pulses/MPH
Pin 1, Ground
Pin 2, Signal (Pulses)
Pin 3 & 4, +Power
Other Available Models:
SK-1007-M
SK-1007-R
IOM-SK-1007-D, Rev. 01
Connector Type:
®
®
Micro-Trak Calc-An-Acre
Raven
1 of 4
Patent No. 6,810,315
Operation
When power is applied, the SkyTrak status indicator will flash green once and then red while the GPS receiver completes its
startup. The GPS receiver has an almanac, which is a table of satellites and their locations in space. Before SkyTrak can
provide speed information, the GPS receiver must download this table from each satellite.
The first time the SkyTrak receiver is turned on, it will have no satellite information. This is a cold start and will take less
than 45 seconds. A warm start occurs when there is a partial table in the receiver, or the table is being updated, and takes
less than 33 seconds. A hot start takes place when power to SkyTrak is off for only a short time. The sensor will be ready in
less than 20 seconds. SkyTrak uses a small internal battery to keep the table information when power is removed to
minimize startup times, but the longer power is removed, the longer it will take the receiver to acquire current satellite
information.
During startup, the status indicator on the front of the SkyTrak unit will be red. After a couple of satellites are available, the
indicator will flash one time for each satellite that is being used. When enough satellite information is obtained to calculate
ground speed, the indicator will change to green. As long as SkyTrak is using less than four satellites, the indicator will
flash the number of satellites in use every 5 seconds (if three satellites are in use, flash – flash – flash, on solid for about five
seconds, and then flash again). Solid green indicates more than four satellites are being used and accurate speed pulses are
available. Solid red indicates SkyTrak is in the startup process or is unable to locate satellites.
Power Supply Warning:
A DICKEY-john® unit cannot be used in Raven applications by using a pin-for-pin adapter.
Many Raven devices do not supply adequate power to operate the SkyTrak directly. Therefore, a Raven specific connector
must be supplied which provides for connection of an independent 12 volt power source to the SkyTrak. The SkyTrak
model SK-1007-R provides the necessary power connection for Raven applications.
It is also very important that a good ground is provided through the connector.
Mounting Options
Your SkyTrak GPS Velocity Sensor has been shipped in the Magnet Mount configuration. The ¼”-20 x ½” long bolt
required for other mounting options has been placed inside the adapter portion of the unit.
Mounting Considerations

 The SkyTrak mounting location should have a clear view of satellites on all sides.

 The SkyTrak unit must be mounted with the dome pointing to the sky.

 Avoid overhead metal structures that can block the satellite signals.

 Avoid mounting in areas with excessive vibration. An antenna that moves or sways may produce ground speed
errors. The idea is to have the antenna move only when the vehicle is moving for accurate true ground speed
measurement.

 Make sure the cable can be safely routed to the connection point.

 Position the SkyTrak status indicator so that it is easily viewable.

 SkyTrak can be mounted on a flat surface such as the roof of the vehicle cab. If surface mounted, use weatherproof
sealant between the roof and the SkyTrak sensor to seal the mounting screw hole and the cable feed hole.

 Be sure to leave access to the two cover screws. These screws will be
removed for access to the backup battery.
SkyTrak
G PS VELO S ITY SE NS OR
Magnet Mount
To utilize the Magnet Mount option, simply attach the SkyTrak
sensor to a metallic surface, plug in the 4-pin connector and calibrate.
Adapter
If disassembled to utilize another mounting option, your SkyTrak
sensor can be returned to the Magnet Mount configuration as shown.
Lock Washer
2 of 4
SQ UIBB-TA YLOR , INC.
www.s quib bta ylor.co m
800- 345 -81 05
Cable
Note: The bottom portion of the magnet has been covered with a
plastic film to protect the mounting surface and should not be
removed.
IOM-SK-1007-D, Rev. 01
TM
Magnet
1/4”-20 x 1-1/4” Long Bolt
Pipe Mount
To utilize the Pipe Mount option:
1) Remove the adapter from the underside of the
sensor base.
2) Remove the magnet from the adapter. The
½” long bolt required for the Pipe Mount
option has been placed inside the adapter.
3) Place the lock washer onto the ½” long bolt.
4) Insert the bolt through the adapter and screw
into the sensor base.
5) Screw 1” pipe into adapter. (The 1” pipe is
not included.)
6) Plug in the connector.
7) Calibrate.
Bracket Mount
To utilize the Bracket Mount option:
1) Remove the adapter from the underside of the
sensor base.
2) Remove the magnet from the adapter. The
½” long bolt required for the Bracket Mount
option has been placed inside the adapter.
3) Place the lock washer onto the ½” long bolt.
4) Insert the bolt through the bracket and screw
into the sensor base. (The bracket is not
included.)
5) Plug in the connector.
6) Calibrate.
Surface Mount
To utilize the Surface Mount option:
1) Remove the adapter from the underside of the
sensor base.
2) Remove the magnet from the adapter. The
½” long bolt required for the Surface Mount
option has been placed inside the adapter.
3) Place the lock washer onto the ½” long bolt.
4) Insert the cable through the wire feed hole.
5) If mounting to the roof of the cab, take care to
not defeat the breather hole when sealing the
mounting. The breather must be open to
atmosphere.
6) Insert the bolt through the mounting surface
and screw into the sensor base.
7) Plug in the connector.
8) Calibrate.
IOM-SK-1007-D, Rev. 01
3 of 4
TM
SkyTrak
SQU IBB-TAYLO R, INC.
www.squ ibbtaylor. com
80 0- 34 5- 81 05
GPS VELOS ITY SENS OR
Cable
Adapter
1” NPT Threads
(user supplied)
Lock Washer
1/4”-20 x 1/2”
Long Bolt
TM
SkyTrak
GPS VELOS IT YS ENS OR
SQ UIB B-TAYLOR, INC.
w ww. squ ib btaylor.com
8 00 -3 45 -8 10 5
Cable
Bracket
(user supplied)
Lock Washer
1/4”-20 x 1/2”
Long Bolt
TM
SkyTrak
GPS VELOSITY S EN SOR
SQUIBB -TAYLO R, INC.
www. squibbt aylor.com
800 -3 45 -81 05
Cable
Mounting
Surface
Lock Washer
1/4”-20 x 1/2”
Long Bolt
Breather Hole on underside
of SkyTrak Base
Calibration
After installing SkyTrak, your control equipment will need to be calibrated. Follow the calibration procedure for your
controller or monitor as if you were using a radar or wheel speed sensor. Typically, this involves driving an accurately
measured distance to determine a speed cal value for your system.
Before running the calibration, allow the SkyTrak to download a full satellite table by turning on SkyTrak where it has a
clear view of the sky for about ten minutes. The status indicator should be solid green (using 4 or more satellites) before
performing the calibration.
Maintenance
Backup Battery Replacement
The backup battery should be replaced every three years. If the status indicator takes several minutes to switch
to green when the unit is powered up after it has been off for only a short time, this is an indication that the
battery needs to be replaced.
To replace the backup battery:
1) Remove the two cover screws
and the cover.
Cover Screw
Cover Screw
2) Locate backup battery and press downward on the center tab until the battery is released.
3) Remove the old battery and replace with a new CR2032 Lithium Coin battery (positive pole
facing upward).
4) Re-install the cover and screws.
IMPORTANT!
DO NOT TIGHTEN THE COVER SCREWS ALL THE WAY IN.
LEAVE A SLIGHT GAP BETWEEN THE SCREW HEAD AND THE COVER.
DICKEY -john ® is a registered trademark of the DICKEY-john Corporation.
Micro-Trak® and Calc-An-Acre ® are registered trademarks of Micro-Trak Systems Incorporated
IOM-SK-1007-D, Rev. 01
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