“Better Safe Than Sorry” Advanced Sync Security NTP/ PTP/ IRIG-B IEEE1588 ePRTC GNSS Time Servers Smart Antenna Technology Jamming/ Spoofing Protection Enhanced Time Server Security Clock Accuracy SafeTime Audit Management Software (NMS-STAS

Introduction Overview 1. Smart Antenna Technology Current technology Traditionally, to receive a GNSS signal, you will need a signal receiver board and an antenna to obtain RF timing signal for the NTP/ PTP time server. Most time server has the signal receiver board built-in the NTP/ PTP time server, while the antenna is a passive device that obtain signal from satellites through its line-ofsight. Advanced technology Elproma NTP/ PTP time server has developed a Smart Antenna where the GNSS receiver board is built into their Smart Antenna instead of the usual approach in time servers. The advantages...

Introduction Overview 3. Enhanced Time Server Security Current technology Time server uses Network Time Protocol (NTP) and Precision Time Protocol (PTP) to distribute timing to other devices within a network. Most of them are single processor computer (FPGA) running over a single software stack dedicated to receive and distribute time via all available network LAN interfaces. Advanced technology • Elproma NTP/ PTP time servers supports expansion by adding special server autonomous NIC modules on top of the standard main network appliance. Each time server module has its own FPGA processor, private...

1. Smart Antenna Technology Traditionally, to receive a GNSS signal, you will need a signal receiver board and an antenna to obtain timing signal for the NTP/ PTP time server. Most time server have the signal receiver board built-in the time server, while the Antenna is a passive device that obtain signal from satellites through its line-of-sight. Elproma NTP/ PTP time server has developed a Smart Antenna where the GNSS receiver board is built into their Smart Antenna instead of the usual approach in servers chassis. The advantages of moving the GNSS signal receiver component to the Smart Antenna...

1. Smart Antenna Technology Ease of updating to latest antenna technology e.g. multi-path mitigation advanced technology from Furuno Furuno manufacturer has developed a new technology to enhance the reception of GNSS signal. This unique functionality enables correct timing signal to be computed even when antennas are mounted in a lower ground and accept reflected GNSS signal. Ease of Installation (UTP CAT5+ cable) Most NTP/ PTP time server uses expensive coaxial cables to connect to GNSS antenna. Elproma time severs uses standard CAT5+ cable to connect to Smart Antenna. This provides: • Long...

2. Jamming/ Spoofing Protection Being a key global player in timing technologies, Elproma has invested many years of R&D into jamming/ spoofing protection. As jamming/ spoofing attacks come in different levels, Elproma has developed a comprehensive process of jamming/ spoofing protection which consists of 3 Levels. “Geographical” distance risk diversification Elproma NTP/ PTP time servers comes with dual GNSS antenna ports. At Level 1, when 2 x Smart Antenna are at least 50m apart, the physical distance deters the risk of mobile jammers as the signal interference is typically limited to 50m....

3. Time Server Security NTP/ PTP time server uses Network Time Protocols (NTP) and Precision Time Protocol (PTP) to distribute timing to other devices within a network. Most of them are single processor server running over a software stack dedicated to receive and distribute time via all available LAN interfaces. Autonomous NTP/ PTP time server On top of Elproma NTP/ PTP time server, it also supports 4 expansion slots for the expansion of NTP/ PTP ports. Each NTP/ PTP module has its own FPGA processor, private PTP-Stack and IP-Stack, allowing each module to perform as an autonomous NTP/ PTP time...

4. Clock Accuracy NTP/ PTP time server supports different internal oscillators to allow different holdover period of accurate time should the GNSS signal is not received. There are 3 common types of internal oscillators: TCXO, OCXO & Rubidium. Typically, these oscillators will provide holdover from the quartz oscillator received from GNSS. Elproma time server improves clock input signal accuracy by reducing its low noise error. Elproma NTP/ PTP time server supports holdover oscillators: Instead of using TCXO as holdover clock like others, Elproma uses TCXO internal low-noise clocking capability...

5. SafeTime Audit Management (NMS-STAS) NMS-STAS is a powerful synchronization management software and reporting tool which support multiple Elproma NTP/ PTP time servers according geographical regions. Using the application, you are able to manage hundreds of NTP/ PTP time severs and audit them with the data collected, to better understand the timing synchronization infrastructure. Real-time monitoring of multiple NTP/ PTP time servers and antennas • Ease of monitoring as users can group their NTP/ PTP time servers based on their preference • Quick visibility of multiple NTP/ PTP time servers'...

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