Hemisphere GPS P306, Integrator Manual

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P306/P307 Integrator’s Guide Chapter 1 - Introduction Page 7 of 39
The P306/P307 GNSS engine is a low-level module intended for custom integration with the
following general integration requirements:

Regulated power supply input (3.3 VDC ± 3%) and 700 mA continuous

Low-level serial port (3.3 V CMOS) and/or USB port communications

Radio frequency (RF) input to the engine from a GNSS antenna is required to be
actively amplified (10 to 40 dB gain)

GNSS antenna is powered with a separate regulated voltage source up to 15 VDC
maximum

Antenna input impedance is 50Ω
Common Features of Eclipse Boards

372-channel GNSS engine

Sub-meter horizontal accuracy 95%

Raw measurement output (via documented binary messages)

Position and heading update rates of 20 Hz max

COAST™ technology that provides consistent performance with correction data

e-Dif®-ready - a base station-free way of differentially positioning

L-Dif™-ready – Local differential is a proprietary Hemisphere GNSS method where a
specialized set of messages are relayed between two Eclipse receivers

Quick times to first fix

Four full-duplex serial ports

USB device port only (P307)

USB host and USB device ports (P306)

1 PPS timing output

Event marker input
Message Interface
The P306/P307 uses a NMEA 0183 interface, allowing you to easily make configuration changes by
sending text-type commands to the receiver.
The P306/P307 also supports a selection of binary messages. There is a wider array of information
available through the binary messages, plus binary messages are inherently more efficient with
data. If the application has a requirement for raw measurement data, this information is available
only in a binary format.
For more information on NMEA 0183 commands and messages as well as binary messages refer
to the
Hemisphere GNSS Technical Reference .
Note: For complete specifications of Eclipse boards, see Appendix C, “ Technical Specifications .”