Small board,
big results

A compact, multi-constellation GNSS board loaded with functionality.

Product Info

Full constellation tracking and enhanced web capabilities in an ultra-compact package

Don't be fooled by its small size. The B125 packs in futureproof tracking of GPS, GLONASS, Galileo and BeiDou signals with the ability to perform centimeter-level RTK positioning all while being remotely accessed over Ethernet.

The B125 GNSS receiver board is an ultra-compact positioning engine capable of providing scalable positioning from sub-meter DGPS positioning to sub-centimeter RTK positioning. Low power consumption, comprehensive communication interfaces and peripheral support make the B125 extremely flexible and easy to integrate into any precise positioning application.

  • Ultra compact receiver board with future-proof GNSS tracking
  • Low power consumption
  • 226-channel Vanguard Technology with Universal Tracking Channels, for reliable "all in view" tracking
  • SD card interface support for quick and easy data collection
  • Serial, USB, CAN and Ethernet available through a single connector for data exchange

B125 is perfect for:

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B125 Specifications

GNSS Tracking
Number of Channels
226 Channels with Universal Tracking Channel technology
Signals Tracked
GPS: L1, L2, L1C, L2C, L5
Galileo: E1, E5a, E5b, AltBOC
Beidou: B1, B2
Physical and Environmental
40 x 55 x 10 mm
20 g
Antenna connector
80-pin Hirose
Operating Temperature
-40°C to 85°C
Storage Temperature
-40°C to 95°C
95%, non-condensing
Vibration Rating
4g Sine Vibe (SAEJ1211)
7.7g Random Vibe (MIL-STD 810F)
Shock / Crash Safety
40 g (IEC 68-2-27)
H: 0.3 m; V: 0.5 m
H: 0.8 m; V: 1.2 m
RTK (L1+L2)*
H: 5 mm + 0.5
V: 10 mm + 0.8
0.02 m/seconds
30 ns
*ppm x baseline
2x RS232 ports and 4x LVTTL ports up to 460.8 kbps
CAN 1x port (w/o transceivers), LVTTL, NMEA2000
Ethernet 1x port supporting TCP/IP, FTP, NTRIP
PPS 1x port with 5 ns resolution, <30 ns precision, LVTTL, configurable polarity and period
EVENT 1x port with 5 ns resolution, LVTTL, programmable active edge
USB 2.0 Slot*
1x port up to 480 mbps (High Speed)
Data Format
SD card support, up to 8 GB capacity
Update/Output rate
1Hz – 100Hz Selectable
Real Time Data Output
ASCII output
NMEA 0183 version 2.x and 3.0
Power and Electrical
Input Voltage Range
+3.4 to +5.5 VDC
Power Consumption
2.0 W typical
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