Security Ranger III Betriebsanweisung PDF herunterladen (Seite 102)

Working with GPS

Tap Windows Start> Settings> System> System Information. Then select Wireless from the selections that display across

the top of the screen to verify that GPS is installed and is using COM 2.

The GPS is compatible with applications that accept the NMEA position information using a default baud rate of 9600.

GPS Settings

If you are using only one GPS-aware application, these settings do not need to be changed. However, to use multiple

GPS-aware applications, tap Windows Start> Settings> System> GPS and tap the selections across the top of the screen:

Access The GPS Intermediate Driver allows multiple applications to access the GPS receiver. To manage the GPS

Intermediate Driver, uncheck the check box.

Hardware COM2 is the hardware port dedicated for the built-in GPS. Verify that COM2 is selected. The internal GPS

communicates at 9600 baud by default. If it has been modified by a third-party program, adjust to match

the receiver baud rate.

Programs Programs that use GPS need to know which port to use to access GPS data. When using more than one

GPS-aware application, the same GPS program port must be used in each application. Ensure that the

COM port on the GPS-aware application(s) is set to the same GPS program port as shown in the Programs

selection. The program port must be a different port than the hardware port. By default, this is COM 3.

Using Assisted GPS (A-GPS)

To enable and disable Assisted GPS, Windows Start> Settings> System> GPS. Then select A-GPS from the selections at the

top of the screen and check the box to "Enable Assisted GPS."

If the GPS has been used in the prior 72 hours, A-GPS will retain a memory of the satellite paths. The A-GPS satellite data is

stored in memory for the satellites visible in your current position. Therefore the unit can lock on the satellites quickly, in

less than 20 seconds in an open sky. The expiration of the A-GPS data is also shown in this menu. Using A-GPS may reduce

accuracy in some situations. If you are unable to connect to the GPS using the default GPS settings, you can restore it to

factory default settings by performing a system shutdown and leaving the unit shut down for approximately 5 minutes.

NOT:N While Assisted GPS can improve time-to-first-fix, it may reduce accuracy in some situations. Uncheck the box next to

"Enable Assisted GPS" and reboot your unit if you wish to disable it.

ORION® Automated Meter Reading System for Trimble® Ranger 3

Page 102 February 2013

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Security Ranger III Betriebsanweisung Seite 102