2 Overview
4 AgGPS 252 Receiver User Guide
2.1 Standard Features of the AgGPS 252 Receiver
A standard AgGPS 252 receiver provides the following features:
•12 GPS (C/A-code) tracking channels, code carrier channels
•Horizontal RTK positioning accuracy 2.5cm (0.98in) + 2ppm,
2sigma; ver tical RTK positioning accuracy 3.7cm (1.46 in)
+ 2ppm , 2sigma
•Submeter differential accuracy (RMS), assuming at least five
satellites and a PDOP of less than four
•Combined GPS/DGPS receiver and antenna
•System level cable
•AgRemote utility with four-button keypad to configure and view
system properties (download from the Trimble website at
www.trimble.com)
•LED status indicator
•The receiver outputs a 1PPS ( pulse per second) strobe signal on
both ports. This signal enables an external instrument to
synchronize its internal time with a time derived from the very
accurate GPS system ti me.
•WAAS differential correction compatibility
•AgGPS 170 Field Computer compatibility
•EVEREST™ multipath rejection technology
•OmniSTAR VBS and HP positioning compatibility
•Two ports that support both CAN2.0B and RS-232:
CAN
– J1939 and NMEA 2000 messages
Note – The AgGPS 252 is ISO 11783 compliant. It supports
some ISO 11783 messages.
RS-232
Ag252_100B_UserGuide_ENG.book Page 4 Thursday, July 28, 2005 4:06 PM