| Brand |
Topcon |
| Model name/ Type |
NET-G3A |
| Year of introduction |
2009 September |
| Class (GPS, Glonass, Galileo/ S, D en T) |
GPS, GLONASS, GALILEO / T |
| Dimensions (h*d*w* in cm): base station case/ rover set case |
9.3 x 27.5 x 16.6 |
| Weight (receiver, rover, antenna, communications, batteries, pole) |
3 kg (rcvr) |
| What type of material is used for the housing |
Aluminium |
| Static [mm + pmm] |
H: 3mm + 0.5ppm V: 5mm+0.5ppm |
| RTK [mm + ppm], maximum baseline length (m) |
H: 10mm + 1.0ppm V: 15mm + 1.0ppm |
| Signal(s) tracked (types / bands / codes) |
GPS: L1, L2, & L5 carrier,CA, L1 P, L2 P, L2C; GLONASS: L1, L2 & L5 carrier, L1CA, L2CA, L1 P, L2 P; GALILEO E2-L1-E1, E5a; SBAS; EGNOS/WAAS/MSAS |
| Single/dual/triple frequency |
Triple |
| Number of channels / tracking mode |
144 Universal Channels |
| Max. no. of satellites tracked parallel (GPS/Glonass/Galileo/Other) |
72 |
| Time to first fix (C/W/R) [sec/sec/sec] |
<60sec / <10sec / <1sec |
| Can the receiver perform RTK surveys (Y / N), Time to first fix (sec) |
Y, on-the-fly |
| RTK initialisation (s/d) [sec] |
within seconds |
| PPS (Puls per second) |
Y |
| Update rate of position (frequency) [Hz] |
Up to 50 Hz |
| Supported RTCM version |
2.1, 2.2, 2.3, 3.0 |
| RTK Network Compatibility |
Y |
| MRS (Mobile Reference Station) functionality |
Y |
| Possible types of messages |
1,2,3,6,9,15,16,18,19,20,21,22,31,32,34,36,59 User selectable (incl. Special GLONASS messages) |
| Id. proprietary format |
Y, TPS, CMR, CMR+ |
| Antenna (integr. and / or ext.) |
External |
| Rover (r/rd/rdm) [V – W/W/W] |
6 to 28 V/4/5 |
| Base (b/bm) [V – W/W] |
6 to 28 V/4/5 |
| Operating time wo/w radio (h) [hrs/hrs] |
n/a |
| Use of cellular phone for the datalink/ Protocol |
Y, GSM, GPRS (NTRIP) |
| Supported GSM protocols, ISDN, GPRS, UMTS |
GSM, GPRS, EDGE, UMTS |
| I/O-ports (number and type of plug) |
4 ser, 1 USB mini, 1 USB Type A, 1 Ethernet, 2 pwr, 1PPS, Event Marker, Ext. Frequency, GPS antenna |
| Remote managing receiver |
Y |
| Options remote |
Y, modem, serial, USB and Ethernet (IP) |
| Special remote software needed? |
Y; Web Browser access via internet Explorer, Firefox and Opera |
| Integrity warnings (warning at failure datalink, loss of lock i.e. (Y/N) |
Y |
| Base antenna phase centre stability (*1) |
<1mm phase center stability |
| Rover antenna phase centre stability (*1) |
<1mm phase center stability |
| ROHS compliance |
Y |
| WEEE compliance |
Y |
| Data storage on receiver |
Y |
| Storage medium (type) / memory [MB] |
CF memory card : 2GB, USB mass storage device |
| Exchangeable / fixed |
Exchangeable |
| Display; size (lines and char. / line) |
FC200, GMS-2 or FC2500 Controller |
