Specifications For Garmin™ Gps; Time Base; 130-Gps System Components - Reftek REF TEK 130-GPS User Manual

Rev H
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
0.2

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.
10
REF TEK 130-GPS Users Guide
96259-00-UG
ppm over the temperature range of 0°C to 40°C and
ppm from - 20° to 0° C
Antenna
130-8010 Cable
RT552
Interface Board
Garmin™ Module
5/20/2021
Reftek Systems Inc.