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LA000578A © 2006 Navman New Zealand. All rights reserved. Proprietary information and specifications subject to change without notice.
suggested that VisualGPS is used for analysis, rather than SiRFDemo.
To provide graphical presentation of the data, the receiver can be set to output in SiRF binary
format.
To set the receiver output to SiRF binary
1. Open the SiRFDemo software.
2. When the Data Source setup is displayed, select the appropriate COM port and 9600 Baud
from the drop down menu.
3. Select the Action menu and click on Open Data Source. If the development unit is powered,
and the serial port is connected to the PC, NMEA data should appear in the Debug View
window.
To change to SiRF binary, select the Action menu and click on the Switch to SiRF Protocol. This
should now present information in each window, similar to that of VisualGPS. Whilst enabled in
SiRF binary protocol, more of the analysis software’s functionality can be accessed. To switch
back into NMEA mode, select the Action menu and click on Switch to NMEA Protocol. Select
9600 for the baud rate and click on the Send button.
Note: settings, including the current output protocol, are reset if all power is removed from the
unit. For more information, refer to the Navman SiRFDemo and SiRFash User Guide
MN000316.
5.0 Acronyms used in this document
1PPS: One Pulse Per Second
DGPS: Differential Global Positioning System
GPIO: General Purpose Input Output
GPS: Global Positioning System
NMEA: National Marine Electronics Association
RTC: Real Time Clock
RTCM: Radio Technical Commission for Maritime services