GeoSIG Accessories

The GMS-GPS is a state of the art GPS receiver module which employs U-BLOX NEO-M8N that is a complete GPS receiver and embedded antenna designed for a broad spectrum of system application.

The NEO-M8 module is concurrent GNSS receiver, which can receive and track multiple GNSS systems: GPS, Galileo, GLONASS and BeiDou. Its far-reaching capability meets the sensitivity requirements of seismic applications and low power consumption.

The NEO-M8N design utilises the latest technology and high level circuit integration to achieve superior performance while minimising space and power requirements.

The GMS-GPS is housed in a water-resistant case and is designed to withstand rugged operating conditions. The host system may communicate with the GMS-GPS via a dedicated, compatible, bi-directional communication channel. Internal memory backup allows the GMS-GPS to retain critical data such as satellite orbital parameters, last position, date, and time.

General Characteristics
Reciever:
Differential ready 12 parallel channel receiver tracks and uses up to twelve satellites to compute and update
Supported GNSS:
GPS, Galileo, GLONASS and BeiDou
Cable:
20M standard, up to 70M possible with RS232. Or up to 300 m with RS485 option.
Antenna:
Built in (or optionally external)
Cable Specifications
Conductor:
5 X 0.25 for RS232, or 4 x 2 x 0.25 for RS485
Conductor Marking:
DIN 47100
Outer Jacket
PVC UL Style, Grey
Temperature range:
-30°C to 80°C
Minimum Bending radius:
10 X cable
Diameter:
5.1 mm
Acquisition Times
Update Rate:
1 sec, continuous
Acquisition*:
< 1 sec; re-acquisition
2 sec; warm (all data known)
45 sec; cold (position, time and almanac known)
Interfaces
RS232 or RS485 compatible
Protocol
NMEA 0183, version 4.0
Accuracy
Time:
30 nanosecond RMS, (60ns within 99% pulses)
position
Differential GPS (DGPS):
< 3 m
Non-differential GPS:
< 15 m,
Subject to accuracy degradation to 100 m 2DRMS under the Selective Availability Program.
PPower
Input Voltage:
4.5 - 15 VDC, typically 65 mA @ 12 VDC. All signals have overvoltage and overcurrent protections.
Environment/housing
Size:
82 mm x 162 mm x 55 mm
Weight:
200 g, not including cable
Operating Temperature:
-30°C to +80°C (internal temperature)
Storage Temperature:
-40°C to +80°C
Index Of Protection:
IP 65
**Specifications subject to change without notice

Concurrent reception of up to 3 GNSS (GPS, Galileo, GLONASS, BeiDou)
Supports all satellite augmentation systems and Assisted GNSS (A-GNSS)
30 nanosecond time accuracy (RMS)
< 2.5 m position accuracy GPS
< 1 second re-acquisition
5 seconds warm acquisition
45 seconds cold acquisition
RS232 or optionally RS485 communication
Built-in antenna or external antenna
Rugged, water resistant housing