Javad Prego, Operator'S Manual

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1-10 Prego Operator’s Manual www.javad.com
I N T R O D U C T I O N
Getting Acquainted
1
Table 1-1lists the options available for this card.
The GGD variety allows users to receive L1/L2 signals from both GPS
and GLONASS.
A WAAS-enabled JNS receiver allows simultaneous tracking of two
WAAS satellites. Each of the WAAS satellites is allocated its own
channel.
Radio Modem
The Prego incorporates an internal radio modem used to receive
differential corrections. The reference station’s modem transmits the
carrier phase and code measurements along with the reference station
information (i.e., location and description) to the rover modem.
In its most common configuration, the Prego has an on-board PDL
(Positioning Data Link) radio receiver that allows the receiver to
capture RTK corrections a PDL Base station broadcasts.
The PDL Base operator is responsible for complying with local
regulations for radio operation. In the US, the FCC regulates the use of
radio transmitters, requiring a license. Broadcasting without a license
can result in severe penalties including the confiscation of your radio
and GPS+ equipment. Please call JNS Customer Support if you need
advice on obtaining the proper license in the USA.
Your internal PDL radio modem comes with a number of preset
frequencies programmed at JNS.
Warning: The use of these preset frequencies without a license
is illegal. Contact your local authorities (the FCC in
the US) to use these preset frequencies.
Once the FCC or your local authority issues the proper licenses, your
JNS dealer will program your PDL radios (Base and Rover) to enable
Table 1-1. Euro Card Options
Euro Card Model Available Options
Euro-GGD G: GPS L1
GD: GPS L1/L2
GG: GPS/GLONASS L1
GGD: GPS/GLONASS L1/L2