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LA000605D © 2007 Navman New Zealand. All rights reserved. Proprietary information and specications subject to change without notice.
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5.6 Selectable User Proles
The purpose of this feature is to provide some typical application proles which users can
select through a simple NMEA message. These proles are macro-like commands that modify
parameters used for common applications. These proles produce optimal navigation default
settings which conform specically to an application’s requirements. They can be then be saved
using the Write-to-Flash feature. The new prole will not be written to Flash automatically.
Available Proles include:
Default - A general prole that balances the needs of most applications.
Automotive - Takes into consideration higher velocities with occasional stopping.
Pedestrian - Takes into consideration slower velocities.
TricklePower - Power saving mode for battery applications. See Low Power Operating
Modes Application Note LA000513
Push to Fix - Only performs a x when requested. For use in special applications. See Low
Power Operating Modes Application Note LA000513
Command
The proles will be selected by an NMEA command
$PSRF197,n<cr><lf>
where n is the prole number:
1. Automotive
2. Pedestrian
3. TricklePower
4. Push to Fix
Refer to Application Note LA000266.
5.7 GPS x output
The GPS x output is an active low output on pin 23 of the module. Whenever the unit has either
a 2D or a 3D x, this output will be low. When the unit has no x, the output will be high.
5.8 Custom application software
The module provides custom modication of the rmware to use available CPU processing
capacities and I/O capabilities. The custom application software can be invoked internally or
externally, providing the ability to dedicate the module as the host application or an external
processor as the host. The module also provides the ability to communicate externally with
standard or customer specic communication protocols.
The custom application software has access to the ash memory, navigation data from the GPS
Navigation software, and access to various I/O lines used on the module.
This can be developed using the SiRF SDK. The SDK provides all the tools and resources
necessary for custom software development. Refer to http://www.sirf.com for more information
about the SDK.