A631 GNSS Smart Antenna

Name: A631 GNSS Smart Antenna
Brand: Hemisphere GNSS

Multi-Frequency GNSS Smart Antenna with Scalable Accuracy

Hemisphere GNSS A631 GNSS Smart Antenna offers professional-level accuracy for a wide range of applications, including agriculture, marine, GIS, and mapping. Powered by Hemisphere’s Lyra™ II ASIC and Cygnus™ interference mitigation technology, it supports GPS, GLONASS, BeiDou, Galileo, QZSS, and Atlas® L-band corrections. With a rugged IP67-rated enclosure, scalable accuracy, and flexible mounting options, A631 delivers reliable GNSS performance in any environment.

First file

Second file

Third file

GNSS Receiver:

Receiver Type	Multi-Frequency GPS, GLONASS, BeiDou, Galileo, QZSS, and Atlas
Signals Received	GPS L1CA/L1P/L1C/L2P/L2C/L5 GLONASS G1/G2/G3/P1/P2 BeiDou B1i/B2i/B3i/B10C/B2A/B2B/ACEBOC Galileo E1BC/E5a/E5b/E6BC/ALTBOC QZSS L1CA/L2C/L5/L1C/LEX/IRNS L5 Atlas
Update Rate	10 Hz standard, 20 Hz optional (with activation)

Accuracy

Positioning	RMS (67%)
Autonomous, no SA:	1.2 m
SBAS	0.3 m
Atlas H10	0.04 m
Atlas H30	0.15 m
Atlas Basic	0.5 m
RTK	8 mm + 1 ppm

Communications Ports:

Ports	2 full-duplex RS-232, CAN
CAN Baud Rates	4800 - 460,800
Correction I/O Protocol:	Hemisphere GNSS proprietary, RTCM v2.3 (DGPS), RTCM v3 (RTK)
Data I/O Protocol	NMEA 0183, NMEA 2000, Hemisphere GNSS binary, Bluetooth 2.0 (Class 2), Wi-Fi
Timing Output	1 PPS, CMOS, active low, falling edge sync, 10 kΩ, 10 pF load

Data & Storage:

Storage Type	16 GB (internal)

Power:

Input Voltage	7-32 VDC
Power Consumption	2.0 W nominal (L1/L2 GPS/GLONASS; L-band)
Current Consumption	0.17 A nominal (L1/L2 GPS/GLONASS; L-band)
Power Isolation	No
Reverse Polarity Protection	Yes
Antenna Voltage	Internal Antenna

Mechanical:

Dimensions	15.8 L x 15.8 W x 7.9 H (cm)
Weight:	< 1.05 kg
Power/Data Connector	12-pin male (metal)
Antenna Mounting	1-14 UNS-2A female adapter, 5/8-11 UNC2B adapter, flat mount available