Downloads (Documents, Software)

• (Existing GNSS antenna) Time synchronization technology with excellent cost-performance in compliance with PRTC-B

• Test carried out with a GNSS antenna surrounded by high-rise buildings

• Effects from jamming signals and validation of two countermeasures

• Threat of malicious spoofing signals
• Detection and exclusion of spoofing signals automatically

• Evaluation test when GNSS signal is interrupted (holdover performance)
• Two cases of using holdover function and operation method

• FURUNO GNSS Conductor T2 for Windows®
• TB-1 App for Android™

1. A basic explanation of how NTP/PTP works! Basics of Network Time Synchronization
2. Supporting nanosecond-precise infrastructure with GNSS technology cultivated from marine business

• (Existing GNSS antenna) Time synchronization technology with excellent cost-performance in compliance with PRTC-B

• Test carried out with a GNSS antenna surrounded by high-rise buildings

• Effects from jamming signals and validation of two countermeasures

• Threat of malicious spoofing signals
• Detection and exclusion of spoofing signals automatically

• Evaluation test when GNSS signal is interrupted (holdover performance)
• Two cases of using holdover function and operation method

We had a great collaboration with Spirent, a leading GNSS simulator company, to verify the multipath signals in the urban canyon environment with their simulator. This test report clearly shows that our product has a better performance for multipath mitigation.

1. A basic explanation of how NTP/PTP works! Basics of Network Time Synchronization
2. Supporting nanosecond-precise infrastructure with GNSS technology cultivated from marine business

1. A basic explanation of how NTP/PTP works! Basics of Network Time Synchronization
2. Supporting nanosecond-precise infrastructure with GNSS technology cultivated from marine business

Dual Band GNSS Receivers: Safeguarding Critical Infrastructure
GT-100 is our first dual-band frequency GNSS receiver module for time synchronization.
What are the advantages of a dual-band frequency receiver in time synchronization applications where service outages are not tolerated?

For those considering GNSS receivers for critical infrastructure, our engineer specializing in time synchronization explains the following in over 20 pages.

• Why is now the right time to move to dual-band?
• Extremely increased robustness
• Jamming waves at 1575.42 MHz: A previously unresolvable problem
• Outstanding features of GT-100 besides the dual-band

You can download this document by filling out the form below.

Countermeasure for GNSS receiver failure
You can download all five white papers by filling out one of the download forms 1-5 below.

• (Existing GNSS antenna) Time synchronization technology with excellent cost-performance in compliance with PRTC-B

• Test carried out with a GNSS antenna surrounded by high-rise buildings

• Effects from jamming signals and validation of two countermeasures

• Threat of malicious spoofing signals
• Detection and exclusion of spoofing signals automatically

• Evaluation test when GNSS signal is interrupted (holdover performance)
• Two cases of using holdover function and operation method

Multipath test report in Urban Canyon with Spirent
We had a great collaboration with Spirent, a leading GNSS simulator company, to verify the multipath signals in the urban canyon environment with their simulator. This test report clearly shows that our product has a better performance for multipath mitigation.

1. A basic explanation of how NTP/PTP works! Basics of Network Time Synchronization
2. Supporting nanosecond-precise infrastructure with GNSS technology cultivated from marine business

• (Existing GNSS antenna) Time synchronization technology with excellent cost-performance in compliance with PRTC-B

• Test carried out with a GNSS antenna surrounded by high-rise buildings

• Effects from jamming signals and validation of two countermeasures

• Threat of malicious spoofing signals
• Detection and exclusion of spoofing signals automatically

• Evaluation test when GNSS signal is interrupted (holdover performance)
• Two cases of using holdover function and operation method

We had a great collaboration with Spirent, a leading GNSS simulator company, to verify the multipath signals in the urban canyon environment with their simulator. This test report clearly shows that our product has a better performance for multipath mitigation.

1. A basic explanation of how NTP/PTP works! Basics of Network Time Synchronization
2. Supporting nanosecond-precise infrastructure with GNSS technology cultivated from marine business

What is this?
A monitoring software for GNSS receiver evaluation kit "VN series" of Furuno.
It is available to see latitude, longitude, velocity and reception status of the satellite signal easily.
It is also available to collect and playback the log data and plot the tracks on the map.
* For more detailed evaluation and log storage, please use the GNSS Conductor of Windows version.

How to install?
Please install and launch the APK file which was sent by Email as attached file in advance on the Android terminal.
* Please put the check in the "Unknown sources" in the security settings of the terminal before installing.

How to use?
Check the "Stay awake" and "Allow mock location" in the "Developer options" on the terminal, and start the application in a state of connecting an evaluation kit and Android terminal by the cable.
* Please prepare the conversion connector of the micro USB on the Android terminal by customer.

1. Become a "communication mode" with the evaluation kit when you select the "GNSS Receiver VN-86x / VN87x" in the combo box on the upper part of the "Main" tab. Log data is collected automatically.
2. It becomes "log replay mode" when you select a NMEA file in the "choose NMEA file ..."
   

Information
Supported OS: Android™ OS 4.2.2 or higher
Version: v1.1.1（2016/7/7）
Size: 4.73MB
Language: Japanese, English

How to install?
Please install and launch the APK file which was sent by Email as attached file in advance on the Android terminal.
* Please put the check in the "Unknown sources" in the security settings of the terminal before installing.

Information
Supported OS: Android™ OS 8 or higher
Version: v1.1.1（2021/05/01）
Size: 3.54MB
Japanese, English, Simplified Chinese
Please note that the TB-1 App cannot be used on devices without Google Play Developer Services (Google Play Service) installed, such as Amazon Fire tablets. Additionally, depending on the type of Android device, the App may not function.

Regarding communication with the TB-1
To communicate with the TB-1, please enable the USB host function (OTG) on your Android device. If communication is not possible, unplug and reinsert the USB cable, then check for the message output asking for connection with the TB-1 after 2 - 3 seconds. If the message is not displayed, reinstall the app and check again.

AU-500_HardwareSpecifications_SE23-410-003_en.pdf

AU-300_HardwareSpecifications_SE23-410-001_en.pdf

AU-500_300_InstallationManual_SE23-900-017_en.pdf

AU-217_InstallationManual_SE21-900-019_en.pdf

GPA-014_InstallationManual_SE21-900-020_en.pdf

• Total gain
• Total NF
• Propagation delay in coaxial cables

It is especially useful for those who are new to GNSS receivers.
We have prepared an Excel tool for calculating "Total Gain" and "Total NF" due to their complex formulas.
Please fill in the form to download the document and calculation tool.

TVA-03C_HardwareSpecifications_SE21-410-003_en.pdf

TVA-03V_HardwareSpecifications_SE21-410-004_en.pdf

• Against direct lightning strikes, that is against surges caused by direct ligthning strikes on the antenna.
• Against induced lightning, that is against surges caused by the magnetic field generated by near-by lightning strikes.
  By combining the above two types of SPDs, lightning surge resistance is enhanced.

Due to recent abnormal weather conditions, countermeasures against lightning surges are becoming more important. Using our SPD model TVA-03C for direct lightning and model TVA-03V for induced lightning as examples, we will introduce their installation methods and the results of lightning impulse tests.
You can download this document by filling out the form below.