GeoSIG - Model GMS-TIM -GNSS Time Receiver Module

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

• 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

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.

Power

• 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