The mean power consumption during a 12 hour test of the Topcon Net-G3A receiver was: 4.02 WTesting Procedure:Input: 12 VAgilent N6705B DC power analyzerPower sampling rate: 10 HzTest was conducted at room temperatureTracking: GPS L1/L2 onlyLogging... Read More

The Topcon PG-A1 with Ground Plane is the standard antenna distributed with UNAVCO's EarthScope Topcon GB-1000 campaign systems (IGS designation: TPSPG_A1+GP)The original calibration published by the National Geodetic Survey in 2004 were found to... Read More

Please contact Topcon directly for the latest GRIL documentation Read More

The attached file contains instructions on how to download GNSS data from the Topcon GB-1000. Read More

Topcon GB-1000 GPS receivers and PG-A1 antennas were selected by UNAVCO for exclusive use in the EarthScope/PBO Campaign Equipment Pool in 2004. This hardware was subjected to extensive testing and evaluation along with competitors that responded to... Read More

Topcon has recently released GNSS receiver board firmware version 3.4 (.zip) for GB-1000 and NetG3 receivers.  This firmware has been tested and accepted for use by UNAVCO's Development and Testing group.Release notes: User visible changes in... Read More

Download the attached file for:Topcon GB-1000 - Receiver Board Firmware v3.2Release notes for this firmware are contained in a separate KB article. Read More

Topcon GB-1000 - How to enable 20 Hz (and other high-rate) logging GB-1000 receivers are capable of logging at 20 Hz (50 ms.) sample rate, but in addition to specifying the sample rate for the log file two other receiver parameters must also be... Read More

GNSS Antenna Phase Center Stablity Test - TPSPG_A1+GP Background Topcon TPSPG_A1+GP Campaign Height Measurement Bias Problems were reported by Bob King, Adrian Borsa and other investigators regarding height estimate biases introduced when using... Read More

This article provides a summary of UNAVCO's comparison of the current state-of-the art hardware from 5 major manufacturers. It will include comparisons of receiver data quality in the following areas: double difference phase residual RMS; qualitative... Read More