GPS/GNSS Modules

Timing Multi-GNSS Receiver Module Model GT-87

High sensitivity and high accuracy timing Multi-GNSS Receiver Module

The GT-87 supports TRAIM and various position modes, allowing it to output accurate and robust 1PPS synchronized to UTC time.
The GT-87 supports GPS, GLONASS, QZSS, SBAS.

>> New Product:GT-88 (Extremely high stability of 4.5ns (1sigma) using a single band receiver)

Timing

Features

  • Multi-GNSS, Concurrent reception of GPS and GLONASS

    ・Improved of robustness thanks to concurrent reception of GPS and GLONASS signals
    ・Supports concurrent GPS, GLONASS, SBAS and QZSS.
  • Simultaneous output of time pulse (1PPS) and low jitter clock (configurable, 4 kHz to 40 MHz) synchronized with the 1PPS

  • Enable to output accurate and robust UTC time and 1PPS synchronized with UTC time

    ・1PPS stability: 15 nsec (1σ) 
  • Single satellite tracking capable operations (except Navigation Mode)

  • Detect/Disable low integrity satellites (TRAIM function)

    ・Suitable for infrastructure development which needs high integrity.
  • Improved Noise Tolerance

    Reduces effects of internal and external noise
    Active Anti-Jamming
    Advanced Multipath Mitigation
  • Embedded Flash ROM

    Suitable for long-term use backed by FURUNO’s continuous support and function enhancement
  • Enhance performance in combination with recommended antenna

    Multi-GNSS antenna AU-217 receives GPS signal (L1 band) and GLONASS signal (G1 band), and has highly noise resistant as well as highly environmental resistant equivalent to IP67. Multi-GNSS antenna AU-217 is suitable for use with Furuno timing Multi-GNSS modules and disciplined oscillators.
    Here's more on  Multi-GNSS antenna AU-217

Specifications

GENERAL

GNSS Reception Capability
GPS L1 C/A, GLONASS L1OF, QZSS L1 C/A, SBAS L1 C/A
GNSS Reception
26 channels (GPS, GLONASS, QZSS, SBAS)
Update Rate
1Hz
Sensitivity
GPS
Tracking: -161 dBm
Hot Start: -161 dBm
Warm Start: -147 dBm
Cold Start: -147 dBm
Reacquisition: -161 dBm

GLONASS
Tracking: -157 dBm
Hot Start: -157 dBm
Warm Start: -143 dBm
Cold Start: -143 dBm
Reacquisition: -157 dBm

*Measurement platform with recommended active antenna
Position Accuracy (Horizontal)
GPS:2.5m(CEP)
GPS+SBAS:2.0m(CEP)
GPS+SBAS+GLONASS:2.0m(CEP)

*Measurement platform with recommended active antenna
1PPS Stability
15ns(1σ)
Clock Configurable Range
4 KHz to 40 MHz
TTFF (Typical)
Hot Start: <5 sec (@-130 dBm)
Warm Start: 35 sec (@-130 dBm)
Cold Start: 35 sec (@-130 dBm)

*Measurement platform with recommended active antenna
Supply Voltage
3.3VDC
Power Consumption
Acquisition Mode: 62.5 mA
Backup Supply
1.4 to 3.6VDC / 9 μA (Typ)
Operating Temperature
-40°C to +85°C
Storage Temperature
-40°C to +85°C
Package
24Pin LCC (Leadless Chip Carrier)
12.2mm×16.0mm×2.8mm
Protocol
eSIP (NMEA 0183 Standard Ver 4.10)
M12 Binary
Interfaces
UART, Time Pulse (1PPS), Clock
Anti-Jamming
Available
Multipath Mitigation
Available

Drawing

Evaluation Kit


GT-87
 Evaluation Kit is available to evaluate the performance of GT-87.
The Evaluation Kit can supply power and communicate with USB interface.
 
FEATURES
  • 5VDC Power supply through USB bus power
  • Serial communication through USB
  • 1PPS output from the SMA connectors
  • SMA antenna connection
  • Outer size is (w) 110mm x (D) 112mm x (H) 30mm
  • Weight is about 260g
  • Accessories are USB cable, GPS-GLONASS Antenna and CD ROM containing the Communication Software, the USB driver and the documentations

Quote Request

Please fill out the quote form and our staffs will respond to you shortly.
 

This is a quote form only for GNSS receivers for time synchronization.
For other contents, please contact us using the respective inquiry form.

Quote request form

Documents, Software

Download documents and software related to this product and other GPS/GNSS products (Specifications document, Drivers and Monitor software).
 

Download contents for GT-87

  • Hardware Specifications
  • Protocol Specifications
  • Monitoring Software

Download page

Documentation

* Specifications subject to change without notice.