Trimble Inc. 6848090 Manual De Usuario
SNB900 Radio-Modem User Guide 35
Configuration and Installation 3
30.1
Installing the SNB900 radio-modem as a rover
When the SNB900 is used as a rover, it receives GPS corrections from
the network for use by a GPS receiver.
the network for use by a GPS receiver.
To install the SNB900 radio-modem as a rover:
1.
If necessary, reconfigure the radio-modem serial port settings.
These settings must be the same on the radio-modem as they are
on the GPS receiver.
These settings must be the same on the radio-modem as they are
on the GPS receiver.
2.
Connect the radio-modem to the rover GPS receiver.
3.
Assemble the antenna and then attach the antenna to the
antenna bracket.
antenna bracket.
4.
Attach the antenna bracket to a tripod or pole.
5.
Connect the antenna cable to the radio-antenna port on the
radio-modem. For the location of this port, see
radio-modem. For the location of this port, see
.
6.
Connect a 12 V DC power source to one of the ports on the
radio-modem. You can use either the LEMO connector or the
26-pin connector for this.
radio-modem. You can use either the LEMO connector or the
26-pin connector for this.
7.
Make sure that the Sync and Rcv messages are flashing on the
radio-modem display.
radio-modem display.
30.1
Installing antennas
Trimble recommends that you use the 5 dB whip antenna when the
SNB900 radio-modem is operating as a base or repeater radio, and the
3 dB whip antenna when the radio-modem is operating as a rover
radio. Both antennas antennas are provided with the radio-modem.
SNB900 radio-modem is operating as a base or repeater radio, and the
3 dB whip antenna when the radio-modem is operating as a rover
radio. Both antennas antennas are provided with the radio-modem.
Safety
C
CAUTION – For your own safety, and in terms of the RF Exposure
requirements of the FCC, always observe the precautions listed here.
- Always maintain a minimum separation distance of 21 cm
requirements of the FCC, always observe the precautions listed here.
- Always maintain a minimum separation distance of 21 cm