DR + GPS
STARTER KIT REFERENCE MANUAL
Lassen DR + GPS Reference Manual 13
Starter Kit Interface Unit
The Starter Kit interface unit consists of a DR+GPS module attached to an interface
motherboard. This kit simplifies evaluation and software development with the
receiver by providing a USB interface that is compatible with most PC
communication ports. Power (9-32 VDC) is supplied through the power connector on
the front of the interface unit. The motherboard features a switching power supply
that converts this voltage input to the 3.3 volts required by the receiver and the 5
volts required by the antenna.
The DR+GPS module, installed on the Starter Kit interface unit, is a single port
receiver. A FAKRA RF connector supports the GPS antenna connection. The center
conductor of the FAKRA connector also supplies +5.5 VDC for the Low Noise
Amplifier of the active antenna. On the DR+GPS module, a 14-pin (2x14), 2 mm
AMP 1-215079-4 Micromatch connector (J1) supports the serial interface (CMOS
level), the pulse-per-second (PPS) signal (CMOS level), and the input power (+3.3
VDC). The 14-pin Amp Micromatch I/O connector on the module connects to the
motherboard via a ribbon cable (see Appendix C for the pinout details).