Reftek REF TEK 130-GPS - Changing GPS Mounting for Integrated Unit

Rev H REF TEK 130-GPS Users Guide 5/20/2021
96259-00-UG
10 Reftek Systems Inc.
Specifications for Garmin™ GPS
Category
Description
Dimensions:
4 x 4 x 3.125 inches (inc. bracket)
Weight:
1.24 pounds.
Power:
< 1 Watt (12 VDC); < 0.4 W est. average using duty cycling.
Power in:
12 VDC
Temperature:
-10° to +65° C
Time connection:
PT07A12-8S 1Hz, Gnd, Serial Receive from host, Serial Transmit to host, 12V, 5V, and reset
1Hz Output:
Leading edge of 20 mS wide, positive going (0-5v) pulse.
Accuracy of +/- 100 nsec.
Time Base
Characteristic
Description
Type
GPS Receiver/Clock plus a disciplined oscillator
Accuracy with GPS
± 100 µsec after validated 3-D fix and locked
Free-Running Accuracy
0.1 ppm over the temperature range of 0°C to 40°C and
0.2 ppm from - 20° to 0° C
130-GPS System Components
The unit receives power (+12VDC) and commands from the host (usually a 130) via the interface
connector and returns a time signal to the host. The unit contains the following printed circuit
boards:
o The RT552 GPS time board. This board is designed and built by REF TEK, it provides the interface
between the host system and the Garmin™ GPS module. The RT552 is the motherboard onto
which the small Garmin™ GPS receiver module is set.
o The Garmin™ GPS module (model GPS-15H). The 130-GPS is run off +12 VDC. The 130-GPS
input voltage should be between +10 and +15 Volts.
The 130-GPS interface cable is available in several lengths to suit a user’s choice of equipment
location. The cable length required should be specified when the unit is ordered.
RT552
Antenna
130-8010 Cable
Garmin™ Module
Interface Board