v5.20 - Classic DocuShare Home - Trimble

G GPS Total Station 4700
G.1 Introduction
G.2 Serial Ports
The GPS Total Station 4700 system is a fully integrated GPS receiver,
radio modem, radio antenna, and external GPS antenna. The 4700
GPS receiver is a low-latency, fast-update GPS engine designed to
provide centimeter-level positioning for Real-Time Kinematic (RTK)
surveys. It also features on-the-fly initialization for RTK mapping
operations and provides differentially corrected C/A code positions
accurate to better than one meter on a second-by-second basis.
The 4700 receiver tracks GPS satellites on both the L1 and L2
frequencies to provide precise position data for land survey and
mapping applications. The 4700 receiver records GPS data and makes
all raw and computed data available through bi-directional RS-232
ports.
There are three serial ports on the GPS Total Station 4700 receiver:
Port 1 is typically connected to the TSC1 datalogger. (Flow
control only on Port 1.)
Port 2 is either connected to an external power source or to a
desktop computer.
Port 3 is for connecting to an external RTK radio.
G.3 Turning the Receiver On
Press the large green button on the 4700 receiver. After a second, the
green LED turns on.
G.4 Turning the Receiver Off
Hold down the large green button on the 4700 receiver for a few
seconds. The LEDs turn off.
290 TSC1 Asset Surveyor Operation Manual