- GNSS for Time Sync
Multi-GNSS Disciplined Oscillator
Model
GF-8701
- Old Products
TCXO equipped High sensitivity Multi-GNSS Disciplined Oscillator which achieves the world's best-in-class small size and low price.
GF-8701 outputs 1PPS synchronized with UTC as well as 10MHz coherent to 1PPS.
GF-8701 can receive concurrent GPS, GLONASS, QZSS (Quasi-Zenith Satellite System) and SBAS signals.
New Product:GF-8805 (Extremely high stability of 4.5ns (1sigma) using a single band receiver)
- GNSS (Timing, Automotive/Industrial)
Features
Generates UTC-synchronized 1PPS (pulse per second) and continuously disciplined 10 MHz
- Reduces errors in digital communication by providing highly accurate and stable frequency
Coherent behavior between time pulse (jitter less 1PPS) and frequency (10 MHz)
Built-in high-sensitivity timing Multi-GNSS receiver with improved noise tolerance for harsh environments
- Receives concurrent GPS, GLONASS, QZSS (Quasi-Zenith Satellite System) and SBAS signals
- Flexible antenna installation locations thanks to high sensitivity and twice the number of satellites in view as opposed to GPS-only positioning
- Reduces effects of internal and external noise thanks to Active Anti-Jamming and Advanced Multipath Mitigation
Support compatible design depending on customer's requirement
- GNSSDO can be customized to meet unique customer requirements
[Specification]
Product | Timing Specifications (1PPS) | Frequency Specifications | Size (mm) | |
|---|---|---|---|---|
Normal Status | Holdover | Normal Status (24h avg.) | ||
GF-8701 | < ±100ns | - | < ±1×10-11 | 34×27×11 |
< ±100ns | < ±50μs/24H | < ±1×10-12 | 34×27×15.5 | |
< ±100ns | < ±10μs/24H | < ±1×10-12 | 34×27×20 | |
< ±50ns | < ±5μs/24H | < ±1×10-12 | 100×52×20 | |
< ±50ns | < ±1.5μs/24H | < ±1×10-12 | 100×52×20 | |
[Test data]
1PPS Timing Accuracy <± X μs continued from start of holdover.
- Reference information only, values not guaranteed.
Time Synchronization
Selectable sources for time synchronization from UTC time or GPS time
Single satellite tracking capable operations (except Navigation Mode)
Antenna Connection Status Check Function
Checks the antenna connection status (Open or Short)
- Assesses antenna connection failure or malfunction easily
Antenna Power Supply Function
Provides power from GNSSDO directly to antenna
- Enabling a simplified antenna connection
Backup Power Supply
Significantly reduces recovery time to GNSS lock after rebooting or interruption
Detect/Disable low integrity satellites (TRAIM function)
Synchronization with external pulse
Enables synchronizing to time pulse from an external source
- Usable to synchronize to time information such as IEEE1588 or SyncE obtained through the network
- Improves robustness of the system
Arbitrary frequency output
Enables arbitrary frequency output separately from reference frequency
Wide operation temperature range
- -40°C to +85°C
ITU-T G.8272/Y.1367 compliant
Suitable for Grandmaster clock
Suitable for various communication and broadcasting applications
For infrastructure requiring product reliability
- Small cell applications including LTE (TDD/ MBSFN/ CoMP/ eICIC)
- Multimedia broadcast base stations or wireless base stations
- Smart grids
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.
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)
Sensitivity
GPS
Tracking: -161 dBm
Acquisition: -147 dBm
GLONASS
Tracking: -157 dBm
Acquisition: -143 dBm
*Measurement platform with recommended active antenna
Initial Stabilization Time
< 5 minutes (untill lock state)
10 MHz Output
Square pulse
10MHz Output (Lock State)
Frequency Accuracy (24h avg.): <±1×10⁻¹¹
Short Term Stability: <1×10⁻⁹
1PPS Output (Lock State)
1PPS Accuracy: <±100ns
1PPS Stability: 15ns (1σ)
Supply Voltage
3.7VDC
Current Consumption
< 150 mA (3.7 V, Stable State)
Backup Supply
1.4 to 3.6VDC / 0.4 μA (Normal Operation)
Operating Temperature
-40°C to +85°C
Antenna Detection
Short and Open Detection
Outer Size
34mm x 27mm x 11mm
Protocol
eSIP (NMEA 0183 Standard Ver 4.10)
Anti-Jamming
Available
Multipath Mitigation
Available
Functions
External Referense Synchronisation, Output Status Signal
Evaluation Kit
P/N VF-01 : Evaluation kit for GF-8701
Connect the PC with a USB port to communicate. Output time pulse (1PPS) and 10 MHz reference frequency (selectable) from a SMA terminal.
Contents: GNSS antenna, CD (GNSS Conductor GF), USB cable
Evaluation kit configuration (video)
simple use by connecting the GNSS antenna with the power supply.
Downloads
| Name | Last update |
|---|---|
| Aug 31, 2018 | |
| Aug 1, 2018 | |
| Mar 8, 2017 | |
| May 24, 2019 |
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Inquiries about GNSS Products
- Specifications subject to change without notice.
GNSS for Time Sync Product List
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Model
GT-100
Timing Multi-GNSS Receiver Module
Model
GT-90/GT-9001
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Model
GT-88
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Model
GF-8801/02/03
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Model
GF-8804/05
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Model
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Field Time Sync Generator
Model
TB-1There are no products that meet the conditions.
GNSS for Time Sync
GNSS for Automotive & Industrial
GNSS Antennas・Accessories
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GNSS Surge Protector TVA-05V
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GPS Antenna AU-15