Leica GPS1200+, Technical Reference Manual

Page: 578 / 1442

Configuration of Devices 578
23.1.3 Modems
Typical uses
Example of use
Requirements for using
modem AT command language must be supported by the modem. Refer to "23.3 Creating a New
Device".
• To transmit NMEA messages. • To download raw observations from a remote location.
• To transmit real-time data
•
Step Description
1. The reference is equipped with a modem.
2. The rover is equipped with a digital cellular phone.
3. Ensure that the modem is switched on.
4. The rover digital cellular phone contacts the selected reference of which the phone
number was pre-defined. Refer to "23.3 Creating a New Device".
5. One rover can dial in to the reference modem at a time.
6. As soon as the reference modem is contacted, it sends its data to the rover digital
cellular phone that has called.
)
Several modem numbers can be pre-defined on the rover. Dialing a different
number changes the reference station.