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Product Description
To meet the stringent requirements of new mobile, fixed-line, and wired networks, reliable and accurate synchronization is crucial from the core network to the edge network. However, this challenge goes beyond precision. In addition to strict accuracy, network operators need a robust, scalable, and cost-effective solution that can work on packet networks and traditional equipment.
The T840 Telecom-grade Grandmaster Clock is a low-cost and highly accurate synchronization delivery device that supports operator-grade ePRTC, PRTC, SSU, and IEEE 1588v2 grandmaster clock with hardware timestamping on 10Gbit/s and 1Gbit/s interfaces, making it no longer a challenge for next-generation technologies like LTE-A and 5G.
With NTP server, multi-channel BITS outputs, and GNSS receiver capabilities, the T840 is an ideal choice for smooth upgrades of traditional synchronization architectures. It also serves as a powerful tool for cable operators to capture emerging demands by providing precise synchronization for DOCSIS3.1 remote PHY devices.
Featuring a modular, highly scalable, and fully redundant design, our T840 offers high configurability and reliability. Additionally, our integrated Bdtime™ technology enables online service synchronization monitoring and assurance without the need for expensive testing equipment.
Applications in the Core Network:
Wireless access network synchronization, including 4G, 4.5G LTE/LTE-A, 5G NR, cluster communications, and small cell base stations.
Clock synchronization in traditional network architectures based on NTP and PRC/SSU/CC.
Synchronization for wired networks (DOCSIS3.1) and PON.
Data centers and enterprise network synchronization.
Modern and traditional power utility network infrastructure.
Modern digital broadcasting studios.
Future-Proof Modular Architecture:
With the capability to support multiple line cards, our T840 is future-proof and can seamlessly integrate with new technologies as they evolve.
Precision and Reliability:
Utilizing our dual multi-GNSS receivers, the T840 provides unprecedented accuracy and availability.
Accurate and Stable:
Our T840 is a highly advanced, flexible, and cost-effective synchronization solution optimized for metropolitan and core network deployments. Even in harsh environmental conditions, the use of multiple GNSS technologies ensures unparalleled availability. Our T840 can be used as a grandmaster clock, boundary clock, or slave clock, complying with the ITU enhanced primary reference clock (ePRTC) standard. It is also combined with our excellent and stable cesium clocks to achieve autonomous, ultra-precise timing, even in long GNSS outage situations.
Zero Downtime:
Our T840 is the definition of reliability, featuring complete hardware redundancy to ensure uninterrupted service delivery.
Distribution Network System Overview
● High-quality OCXO, DOCXO, and Rubidium Clock up to 8x1/10GbE (base unit)
● +4x1/10GbE (line card)
● Up to 2048 unicast slave clocks
● Hot-swappable redundant clocks, GNSS, and PSU
Operating Modes
● ePRTC, PRTCA, and PRTCB
● IEEE 1588 PTP grandmaster clock, boundary clock, slave clock/probe NTP service
● PRC/SSU (Sync-E and BITS/CC)
GPS Receiver
● Embedded L1 multi-satellite receiver
● Optional multi-band, multi-satellite receiver for improved accuracy
● BeiDou/GPS/GLONASS/GALILEO/SBAS/QZSS
PTP Functionality
● Default configuration based on Ethernet and IP multicast telecommunications functions and G.8265.1, G.8275.1, and G.8275.2
● Enterprise hybrid/Power functionality based on hardware packet processing
NTP Service
● High-capacity primary time server
● Hardware timestamping with support for NTP/PTP/Sync-E/SSU
● NTP authentication and PTP to NTP conversion
Expansion Cards (Options)
● T840 expandable with 10 hot-swappable cards
● Line Cards: ①-16xE1/T1/2.048MHz(120/100/75ohm) ②-4x1/10GbE(PTP/Sync-E) ③-Multi-band GNSS-10x Composite Clock
Multi-band GNSS Receiver Card
● Redundant, hot-swappable GNSS receiver and antenna inputs (with 2 cards) for ePRTC and PRTC-B
● Provides higher accuracy. Multi-band, multi-satellite system with 184-channel GNSS receiver
● GPS (L1C/AL2C), BeiDou (B1l, B2l), Galileo (E1B/CE5b), GLONASS (L1OF, L2OF),
QZSS (L1C/AL2C), SBAS (L1C/A: WAAS, EGNOS, MSAS, GAGAN)
● Four parallel GNSS satellite systems
● Constellation map and GNSS status
● Configurable signal-to-noise ratio, elevation, and position accuracy factor
● User-configurable antenna cable delay compensation
● Supports fixed positioning - single satellite mode
● Interference and spoofing detection
● Advanced spoofing, interface detection, and mitigation
● Antenna voltage +5VDC
● Antenna connector SMA-F (50 ohm)
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Performance advantages
● Full Hardware Redundancy
All critical modules are protected to ensure no loss of performance and high service availability.
● Bdtime™ Technology
Built-in synchronization accuracy monitoring, testing, and assurance features.
● Easy Transition from Traditional to IP
Convenient conversion from traditional TDM to IP-based networks, including CC, BITS, and T1/DS1/E1 signals.
● Multi-Technology High-Speed Connections
The telecommunications industry's first solution supporting NTP, PTP, and SyncE with over 48 10Gbit/s and 1Gbit/s interfaces with hardware timestamping.
● Unique Flexibility and Versatility
Modular and scalable design, configurable as ePRTC, PRTC, SSU, PTP grandmaster clock, APTS, boundary clock and slave clock, as well as NTP server.
● Easy Operation
Comprehensive controller including SyncDirector and GNSS Control for excellent management and synchronization monitoring capabilities.
Primary Applications
● Enhanced Primary Reference Time Clock (ePRTC)
● Primary Reference Time Clock (PRTCA and PRTCB)
● 1588v2 PTP grandmaster clock (supporting up to 2048 PTP clients at a rate of 128pps)
● 1588v2 PTP boundary clock (supporting up to 2048 PTP clients at a rate of 128pps), G.8273.2 BC type D
● 1588v2 PTP slave clock input (as GNSS backup) APTS
● GNSS receiver and PRC/PRTC, including multiple physical synchronization output interfaces
● Synchronization Supply Unit (SSU) and composite clock generator
● NTP server
● Sync probe - Bdtime™ monitoring and assurance
Product Specifications
Expansion Cards: Up to 10
PTP/NTP/Sync-E Ports: Up to 48
BITS Output Ports: Up to 161
PSU: Hot-swappable redundant DCPSU
Dimensions (Length x Width x Height): 3RU 443mm x 132.5mm x 216mm / 17.44" x 5.21" x 8.50"
NTP Functionality
● GNSS-referenced primary time server
● NTPv1, v2, v3, and v4 support for IPv4 and IPv6
● NTP unicast/multicast/broadcast
● Symmetric key and autokey authentication
● Time & Date Protocol
● NTP peering
● Optional time standards for NTP (UTC/GNSS/Local)
● Hardware timestamping accurate to nanoseconds
● Lock to GNSS, NTP to UTC accuracy better than +/-100ns
● Up to 16 NTP service IP addresses
● NTP and PTP support on the same network interface
● PTP to NTP conversion
● Up to three layers of VLAN per flow (Q-in-Q service provider tag)
● Enhanced NTP statistics and client list
● Up to 8,000 events per second per CSM
● PTP as a backup when GNSS fails
PTP Network Functionality
● PTP configuration support:
- ITU-T G.8265.1 frequency delivery (IP unicast based on IPv4/IPv6)
- ITU-T G.8275.1 time/phase delivery (full timing domain support - Ethernet multicast)
- ITU-T G.8275.2 time/phase delivery (partial timing domain support - IPv4/IPv6)
- PTP enterprise profile (mixed multicast and unicast) - default support for IEEE 1588-2008 PTP based on IP multicast
- Default support for IEEE 1588-2008 based on Ethernet multicast (Annex F)
- PTP power and utility profile: EC/IEEE 61850-9-3, IEEE C37.238-2011, IEEE C37.238-2017
- PTP broadcast and media profile: SMPTE ST2059-2, AES67
● Support for one-step and two-step clock configuration
● Performance does not degrade with increasing number of slave clocks
● Up to 16 master/boundary clock IP addresses (supporting both IPv4 and IPv6 on the same port)
● Up to 16 EVCs (IEEE 802.1Q customer tags) and VLANs stacked per CSM
● Simultaneous support for multiple functions
● Support for PTP (TAI) and arbitrary (ARB) timescales
● Simultaneous master and slave clocks on all ports
● Up to three layers of VLAN per flow (Q-in-Q service provider tag)
● Enhanced PTPGM/BC/slave statistics, performance monitoring (15 minutes and 24 hours), threshold crossing alerts (TCA), and SNMP traps
● Nanosecond-accurate hardware timestamping
● Internal top-tier clock recovery algorithm
● DoS protection using hardware access control lists (ACLs) and traffic rate limiting
● Operates as a single or dual attached clock in PRP IEC 62439-3 networks
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Documentation
T840【PDF】data
PDF
Being among experts, no longer confused.
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PNT stands for Positioning, Navigation, and Timing
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Bd Star is a national high-tech enterprise specializing in Beidou GPS timing and navigation industry. The company is dedicated to the research and development, design, production, and sales of system solutions such as standard time timing
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Experienced
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BdSTAR TIME seamless switching technology for redundant reference sources includes several technical components such as high-precision phase-shifting technology, reference clock, FPGA, integrated analog stretching, asynchronous serial communication, parameter storage, and master clock output.
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Requirement customization
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The core technology team of the company has many years of research and development experience in the field of timing and frequency. They possess multiple key core technologies in high-precision timing, PNT combination, frequency measurement, control, optical fiber time-frequency transfer, recovery, and maintenance.
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Philosophy
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"Our team of experts is committed to providing you with the best industry solutions, reducing project costs, and saving your valuable time. Additionally, our ability to design and use various timing and navigation components enables us to develop customized products for various special applications."
