User's Manual

SPSx80 and SPSx81 Smart GPS Antennas User Guide 37
Setup Guidelines 4
– gasoline engines (spark plugs)
– televisions and computer monitors
– alternators and generators
– electric motors
–equipment with DC-to-AC converters
– fluorescent lights
– switching power supplies
• Trimble recommends that, wherever possible, all GPS receiver equipment is
protected from rain or water. Although, the receivers are designed to withstand
all wet weather conditions, keeping the receivers dry prolongs the life of the
equipment and reduces the effects of corrosion on ports and connectors. If the
equipment gets wet, use a clean dry cloth to dry the equipment and then leave
the equipment open to the air to dry. Do not lock wet equipment in a transport
case for prolonged periods. Wherever possible, avoid exposing the GPS receiver
to corrosive liquids and salt water.
• If you are using the rover receiver in open spaces, Trimble recommends that you
stop work during electrical storms where the risk of lightning strike is high.
• Where cables are involved, Trimble recommends that you use cable ties to
secure the cables to the rod or other equipment to avoid inadvertent snagging
while moving about the jobsite. Be careful not to kink, twist, or unnecessarily
extend cables, and avoid trapping them in vehicle doors or windows. Damage to
cables can reduce the performance of GPS equipment.
Internal radio setup for rover operations
The internal radio of the SPS GPS receiver is delivered with the transmit (Tx) radio
frequencies preprogrammed into the receiver. To add receive (Rx) radio frequencies to
450 MHz radios, use the WinFlash utility (see
Appendix C, Adding Internal Radio
Frequencies
). Radio frequences cannot be added to the 900 MHz radios.
Once the radio frequencies are configured, use the controller or receiver to select
channel frequencies during base station or rover setup operations.
Cellular modem and external radio
Instead of the internal radio, you can use a cellular modem or an external radio as your
data communications link.
To connect a cellular modem to a Smart GPS antenna, you need the following:
• Smart GPS antenna
• One of the following:
– TSC2 controller with CompactFlash card cellular modem, for example, a
Audiovox modem card