Trimble Inc. TC900C User Manual
3 Configuring the SNR900
1 4 SNR900 Operation Manual
3.3.3
Network
To change which GPS base station a SNR900 listens to, set the
Network number. The SNR900 offers 40 different Network numbers.
Network number. The SNR900 offers 40 different Network numbers.
Note – If you only have one GPS base station on your site, set all your
radios to the same Network number. If you have more than one GPS
base station on your site, each GPS base station must be on a separate
radio network. Select a different Network number for each radio
network.
radios to the same Network number. If you have more than one GPS
base station on your site, each GPS base station must be on a separate
radio network. Select a different Network number for each radio
network.
When you initially set up a radio network for your site, configure a
rover to the Network number you require and listen to see if anyone is
currently using this network in your area. If the rover sync light glows,
you must select a different Network number for your site. This will
avoid interfering with the other network user.
rover to the Network number you require and listen to see if anyone is
currently using this network in your area. If the rover sync light glows,
you must select a different Network number for your site. This will
avoid interfering with the other network user.
3.3.4
Mode
Each radio in a SNR900 network can be set to one of three operational
modes:
modes:
•
GPS Base – when it is connected to the base station GPS
receiver that is generating CMR corrections
receiver that is generating CMR corrections
•
Rover – when it is mounted on a machine that is connected to a
receiver required to generate RTK positions
receiver required to generate RTK positions
•
Repeater – when it is used in a network to increase coverage
Note – A network can have many rovers but only one base radio. It
can also have up to four repeaters, each uniquely identified by a
different repeater number (#1, #2, #3, and #4). Repeaters can be
chained two in a row.
can also have up to four repeaters, each uniquely identified by a
different repeater number (#1, #2, #3, and #4). Repeaters can be
chained two in a row.
3.3.5
Serial Port Baud Rate and Parity
The serial port baud rate list and the serial port parity setting list
configure the baud rate and parity of the radio port that is connected to
the GPS receiver. Set the baud rate to 38400 and the parity to None.
configure the baud rate and parity of the radio port that is connected to
the GPS receiver. Set the baud rate to 38400 and the parity to None.
SNR900.book Page 14 Friday, December 3, 2004 2:02 PM