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IOM-SK2-1001, Rev. 03
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
Maintenance
To gain access to the jumper and/or backup battery, remove
the four small screws on the underside of the SkyTrak unit.
Do not remove the Magnet screw in the center of the unit.
To change the jumper position,
remove the jumper and
re-install it vertically, in line with the desired Position Number.
For example, for 9.823 PPS/MPH, install the jumper vertically,
over the two pins in line with the number 5, as shown.
Replace and secure the cover,
remount the SkyTrak unit, and
re-calibrate.
To replace the backup battery,
press the locking
tab downward and slide the battery out of the
battery compartment.
Install a new CR2032 Lithium Coin Cell battery
into the compartment with the positive (+) pole
upward, until the locking tab is
in the position shown here.
Replace and secure the cover, remount the SkyTrak unit, and re-calibrate.
Cover Screws (4)
Magnet Screw
Locking Tab
Press Locking Tab downward
Jumper installed
at Position 1.
Jumper Position 5,
for 9.823 PPS/MPH
IOM-SK2-1001, Rev. 03
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SkyTrak
GPS VELOCITY SENSOR
TM
INCORPORATED
DALLAS TEXAS
(214) 357-4591
(800) 345-8105
Installation, Operation & Maintenance Manual for Models
SK2-1001-D, SK2-1001-M, & SK2-1001-R
1 Hertz GPS Velocity Sensors
Form
IOM-SK2-1001, Rev.03
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.
Standard Features
Low cost alternative to radar type
speed sensors
Completely self-contained (GPS,
antenna, and velocity-to-pulse
converter)
16 Channel GPS receiver
Battery backup for GPS satellite
table reduces startup time
Selectable output pulse rates
ensures monitor compatibility
0.1 MPH accuracy from 0.5 to 50
MPH
UV stable, polycarbonate
enclosure
Magnet mount simplifies
installation
Diagnostics LED’s built into the
cable help to quickly verify
performance
Consistent pulses/foot output from
unit to unit
Physical Specifications
Size
3.50” Diameter x 2.14” High
Cable Length
15 feet
Power
4.8 to 16 Volts, 0.1 Amps max.
Backup Battery
CR2032 Lithium Coin Cell
Connector
DICKEY-john
®
, Raven, or
Micro-Trak
®
(depending on Model Number)
Operating Temp. -30°C to +65°C
(-22°F to +149°F)
Storage Temp.
-40°C to +80°C
(-40°F to +176°F)
Humidity
100% Condensing
Performance Specifications
Velocity Accuracy
0.1 MPH (without SA)
GPS Update Rate
1 Hz.
Backup Battery Life
> 3 years
Acquisition Rate
Cold Start
< 52 seconds
Warm Start
< 9 seconds
