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Product Name:GB-3
Product Description:Tracing it’s heritage back to the original Topcon Legacy GNSS receiver systems, the GB-3 introduces the G3 technology to users who like to keep their options open when it comes to configurations.
Type:Land and marine
Year of initial introduction :
Height [m]:0.11
Depth [m]:0.35
Width [m]:0.24
Total weight [kg]:0.6
Housing material:Aluminum or Polycarbonate
Operating power: min. [V]:6
Operating power: max. [V]:28
Typical consumption [W]:3.5
Internal power supply:
External power supply:5 pin ODU connector
Operating time with internal power supply [hr]:
Rechargeable with (auto)battery :
Direct car connection cable available :
Operating temperature: min. [°C]:-40
Operating temperature: max. [°C]:75
Humidity resistance:95
Water sand and dust proof:
Shock and vibration proof:
ROHS compliance:
WEEE compliance:
No. channels:72
Max. simultaneous tracked channels:
Tracked satellite signals:GPS & GLONASS
SBAS differential signals:WAAS/EGNOS/MSAS
Type of measurements:L1/L2/L5 C/A and P Code & Carrier
Reacqisition time [s]:1
RTK Network Compatibility:Y
MRS functionality:N
Horizontal uncertainty 
code: DGNSS/RTC (constant part) [m]:0.4
code: DGNSS/RTC (variable part) [ppm]:
phase: RTK rapid static (constant part) [m]:
phase: RTK rapid static (variable part) [ppm]:
phase: RTK kinematic (constant part) [m]:
phase: RTK kinematic (variable part) [ppm]:
phase: static post processing (constant part) [m]:
phase: static post processing (variable part) [ppm]:
phase: kinematic post processing (constant part) [m]:0.01
phase: kinematic post processing (variable part) [ppm]:1
Initialization time on the fly [s]:
Range on the fly [km]:
RTK network solution methods:RTCM 2.1, 2.2, 2.3, 3.0, CMR, CMR+, TPS
Memory medium :Internal 2 GB Compact Flash Card
Data capacity [MB]:2000
Type of data (on board recording):
Data input :
Communication: general 
Communication ports:Serial: RTS/CTS, 7 pin ODU connector, Maximum up to 4 ports. USB, Ethernet, Power, Antenna: TNC connector; Output voltage: 5.0VDC.
Simultaneous links:
Bluetooth :N
Communication: links 
Radio modems :
GSM; UMTS phone modems:
CDMA phone modems:
Landline modems:
Communication: Protocols 
RTCM standards for differential data:2.1, 2.2, 2.3, 3.0
CMR standards for differential data:CMR, CMR+
Other formats for differential data:
NMEA output format:NMEA 0183 versions 2.x and 3.x
other output formats:Proprietary (TPS) data format,
L-Band Compatible:Yes
Configuration method :
More information 
Distinguishable features :G3 dual frequency receiver. Flexible system. Suitable for base station static or backpack solutions. 72 Universal Channels. Selectable Port Configuration.

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