Cost-effective Rubidium
for 256 unicast clients












Timing flexibility ideal
for topoligies in evolution

Net.Time clock

Net.Time represents the state-of-the-art in timing as it has been designed to deploy the most precise and secure synchronization networks for critical services such as electricity and telecommunications. Net.Time is fault-tolerant, has a built-in GNSS receiver, Rubidium oscillator, redundant power supply and accepts a wide variety of time references that can be used as primary or backup references. Provides compatibility between timing signals for synchronization distribution using protocol translation in all directions.


Fig 1. Time flexibility means that any in/out combination is possible.

Net.Time is a PTP / NTP appliance that can be configured as Master, Boundary and Slave clock to distribute a large variety of timing signals including PTP, NTP, SyncE, ToD, IRIG-B, PPS, T1, E1 and MHz. Net.Time is equipped with an atomic Rubidium oscillator to satisfy the highest time accuracy in the event of hold-over, OCXO is also a valuable option to maintain an excellent time stability in locked mode. Net.Time is very flexible indeed, as it accepts multiple clock references to discipline the internal circuits. GNSS is the default and the most obvious reference but signals such as PTP, NTP, SyncE, ToD and IRIG-B can also be used as main reference inputs and can be activated in a hierarchical way.


Fig 2. Time flexibility means that any in/out combination is possible.

Net.Time is conceived as a new-generation clock intended to facilitate the transition from to the new PTP networks. With this purpose in mind Net.Time offers seamless translation between SNTP and PTP presenting a wide variety of inputs / outputs for primary or backup time references.

  • PTP /NTP over PRP clock for mission critical applications
  • PRP native (DAN-P clock) no Red box required
  • Supports and translates PTP Telecom and Power profiles to integrate heterogenius networks.
  • OCXO / Rubidium are available for internal oscillator.
  • Multiple in/out signals PTP, NTP, SyncE, 1PPS, E1, T1, MHz, Mb/s
  • PTP-to-all, NTP-to-PTP, IRIG-B-to-PTP protocol translation
  • Facilitates the coexistence of legacy and new protocols

Applications

Power Substations

Smart grid automation requires extremely precise time accuracy --and stability as well-- for tasks such as peak-hour billing, virtual power generators, or outage management. It is also necessary for the automatic protection of high voltage lines that are permanently supervised, when a substations detects an event, it is timestamped and transmitted to ensure correct operation.


Fig 3. Time flexibility means that any in/out combination is possible.

The support of Power profile, PRP and IRIG-B make Net.Time ideal for the new digital substations willing to secure the investment and the support of both, legacy and new interfaces. In substation many resources require accurate synchronization ranging from microseconds to milliseconds.

5G Telecom

5G operators require accurate phase and time alignment at the backhaul of the wireless in order to increase the density of terminals reducing cells size. Timing is also necessary for reusing the frequencies, to control the hand-over, logging the events and many more new services that are boosting the mobile business. Net.Time in telecom networks is deployed at the edges and generally configured as a boundary clock to provide a high level of accuracy and protection with signals such as PTP, SyncE, PPS, T1/E1 and MHz.


Fig 4. New 5G networks are very demanding on frequency and phase requirement.

New wireless deployments have stronger requirements at synchronization plane in order to reduce the size of the cells reusing more often available frequencies and, very important, wireless terminals have to share up/downstream channels to improve the efficiency by using phase information.

Air Traffic Control

Time is a key resource in Navigation Systems to ensure the proper functioning. Inherited signals such as IRIG-B, NTP and TDM are still in use but progressively are being replaced by PTP time-stamping systems to provide a unique, accurate and consistent synchronization based on Net.Time equipped with atomic oscillators disciplined by GNSS and distributed throughout the territory, air traffic control centres and airports.


Fig 5. Air traffic control includes a combination of new and legacy timing signals.

Timing is a key resource to ensure the correct operation of the Air Navigation Systems. Legacy signal --such as IRIG B, NTP and TDM-- are still on use but are being progressively substituted by PTP time stamping to provide a unique, accurate and coherent synchronization signals based on atomic clocks disciplined by GNSS and distributed across the IP network to the whole territory.

Finance Institutions


Fig 6. Financial institutions are committed to register operations with time-stamps.

Financial services rely on powerful transport layer capable to provide high speed, availability, security and reliability. At the timing side, NTP and GNSS has been la widely used to synchronize nodes, transactions, and to log time-stamped events in a chronological sequence. Nevertheless today are in the migration pace to PTP that will improve the quality and functionalities of this service.


Fig 7. Timing is also a key requirement in any industry.

Net.Time Features

Synchronization

PTP function

  • Boundary, Grandmaster, and Slave clock
  • Up to 256 unicast clients at 128 packets/sec
  • PTP profile translation from Port A to Port B

PTP profiles

  • Default profiles (IEEE 1588-2008 Annex J)
  • Telecom frequency profile (ITU-T G.8265.1)
  • Telecom phase and time profile (ITU-T G.8275.1)
  • PTS / APTS profile (ITU-T G.8275.2)
  • Utility Profile (IEC 61850-9-3)
  • Power Profile (IEC C37.238)

NTP function

  • Port A: NTP server / Port B: 1000 transactions per second
  • NTPv3 (RFC 1305) and NTPv4 (RFC 5905) server and client
  • SNTPv3 (RFC 1769) server

SyncE function

  • Interfaces: RJ45 and SFP
  • Full ESMC / SSM support as per ITU-T G.8264 and G.781
  • SyncE for time holdover during GNSS outage

GNSS

  • GPS, GLONASS, Beidou, Galileo support
  • 72 channels in the L1 band
  • Single and Multiple constellation
  • Cable delay compensation

Time Inputs / Outputs

  • Time: PTP, NTP, IRIG-B (B00X, B12X, B13X, B14X, B15X, B22X), ToD (ITU-T G.8271, China Mobile and NMEA)
  • Phase: 1PPS, 1PP2S
  • Frequency: 1544 kHz, 2048 kHz, 5 MHz, 10 MHz, 1544 kb/s (T1), 2048 kb/s (E1), SyncE

Rubidium / OCXO oscillators Internal Oscillator

  • Default OCXO better than ±0.1 ppm
  • Optional Rubidium better than ±5.0 e-11

Rubidium features

  • Aging (1 day, 24 hours warm up): ±4 e-11
  • Aging (1 year): ±1.5 e-9
  • Warm-up (time to <1.5 e-9): 15 minutes (typical 25º C)

Locked Accuracy

  • To UTC (24 h locked to GNSS, peak value, ±2º C): ±40 ns
  • To reference (24 h locked to 1PPS / ToD, peak value ±2º C): ±10 ns

Hold-over Accuracy

  • OCXO: <1μs (1h ±2ºC) / <10μs (12h ±2ºC)
  • Rubidium: <100ns (2h ±2ºC) / <1μs (24h ±2ºC) / <10μs (120h ±2ºC)

Freerun Accuracy

  • Accuracy on shipment at 25ºC: ±5 e-11

PRP resilience

  • PRP extension for IEEE 1588 / IEC 61588
  • Link Redundancy Entity (LRE) / IEC 62439-3

Ports

  • 2 x RJ45 (10BASE-T, 100BASE-TX, 1000BASE-T): PTP, NTP, SyncE, PRP (in/out)
  • 2 x SFP (100BASE-FX, 1000BASE-LX,1000BASE-T, 1000BASE-ZX, 1000BASE-BX): PTP, NTP, SyncE, PRP (in/out)
  • 1 x SMA port: GNSS (in)
  • 3 x SMB ports: IRIG-B (in/out), 1PPS (in/out), 1PP2S (in/out), 10 MHz (in/out), 5 MHz (in/out), 2048 kHz (in/out), 1544 kHz (in/out)
  • 2 x RJ48: IRIG-B (in/out), ToD (in/out), 10 MHz (in/out), 5 MHz (in/out), 2048 kHz (in/out), 1544 kHz (in/out)

Platform

Operation

  • Fan-less operation ETSI 1U rack mountable (1¾” x 10” x 19” / 240 mm), weight: 2.8kg / 6.2lb
  • Temperature / Humidity range: -10ºC ~ +65ºC, 10% ~ 90%

Redundant power supply

  • AC: 85 ~ 264 Vac, 47 - 63 Hz (IEC 60320 C13/C14)
  • DC: 18 ~ 75 Vdc (2-pin 5.1 mm)
  • Universal: 85 ~ 264 Vac or 100 ~ 370 Vdc (2-pin 5.1 mm)
  • Power Consumption: 10W ~ 14W

Front/Back Panel

  • LEDs: Platform (PSU1, PSU2, System), Application (Alarm, GNSS, Locked), Ports (Link, Activity)
  • 1 x RJ45 Network and Time interfaces
  • 1 x RJ45 Management Interfaces
  • USB software and firmware upgrade
  • 1 x Expansion module
  • 1 x Reset button

Management

  • Local console by CLI (RJ-45)
  • SSH through management interface (RJ-45, 10/100BASE-T)
  • RFC 3164 Syslog event reporting (device role)
  • TFTP software and firmware upgrade

Ordering Information

CODE DESCRIPTION
AT.NTIME.GM.AC ALBEDO Net.Time PTP Grandmaster Clock. Dual 10 / 100 Mb/s electrical Ethernet port and dual 100 Mb/s optical Ethernet supplying synchronization as specified in IEEE 1588-2008 Annex J “Default Profiles” to a maximum of 16 clocks. Internal OCXO timing source. GPS, GLONASS, BeiDou and Galileo clock reference input. 1PPS, 1PP2S and time-of-day inputs and outputs. Frame and network statistics. Console and and Ethernet management ports. Local and remote firmware upgrade. Single AC power supply unit (PSU-AC). Includes AC power cord, console cable, rack mount ears and screws.
AT.NTIME.GM.DCL ALBEDO Net.Time PTP Grandmaster Clock. Dual 10 / 100 Mb/s electrical Ethernet port and dual 100 Mb/s optical Ethernet supplying synchronization as specified n IEEE 1588-2008 Annex J “Default Profiles” to a maximum of 16 clocks. Internal OCXO timing source. GPS, GLONASS, BeiDou and Galileo clock reference input. 1PPS, 1PP2S and time-of-day inputs and outputs. Frame and network statistics. Console and and Ethernet management ports. Local and remote firmware upgrade. Single DC 18 – 75 V power supply unit (PSU-DC). Includes console cable, rack mount ears and screws.
AT.NTIME.1GE Adds support for 1 Gb/s Ethernet interfaces over electrical and optical interfaces.
AT.NTIME.BC Boundary clock function for IEEE 1588-2008 Annex J and IEC 61850-9-3 PTP profiles. With AT.NTIME.PTPEXT adds boundary clock function for ITU-T G.8275.1 and ITU-T G.8275.2 profiles. Adds PTP profile translation functionality. With AT.NTIME.NTP adds support for NTP client function.
AT.NTIME.PRP Parallel Redundancy Protocol following IEC 62439-3 for simultaneous transmission of information over two redundant Ethernet ports with zero seconds failover recovery time.
AT.NTIME.SE Synchronous Ethernet timing. Synchronous Ethernet input / output and ESMC generation and decoding as specified in ITU-T G.8261, G.8262 and G.8264.
AT.NTIME.FREQ Provides support for 2048 kHz, 2048 kb/s, 1544 kHz, 10 MHz and 5 MHz clock reference inputs and outputs.
AT.NTIME.PTP.U Adds support for IEC 61850-9-3 "Utility Profile", IEEE C37.238-2011 "Power Profile 2011" and IEEE C37.238-2017 "Power Profile 2017"
AT.NTIME.PTP.T Adds support for ITU-T G.8261.1 “Telecom frequency profile”, ITU-T G.8275.1 “Telecom phase and time profile” and ITU-T G.8275.2 “PTS / APTS profile”.
AT.NTIME.NTP Network Time Protocol version 3 (RFC 1305), version 4 (RFC 5905) and Simple Network Time Protocol version 3 (RFC 1769) master functionality.
AT.NTIME.IRIG Inter Range Instrumentation Group type B (IRIG-B) time codes input and output over balanced or unbalanced interface.
AT.NTIME.FHM.RB Rubidium timing module. Replaces OCXO internal timing source by an atomic (Rubidium) internal timing source in AT.NTIME.GM.AC or AT.NTIME.GM.DCL
AT.NTIME.GM.USR64 Upgrade to 64 clients. Increases number of client unicast or multicast clocks to 64 in AT.NTIME.GM.AC or AT.NTIME.GM.DCL
AT.NTIME.GM.USR128 Upgrade to 128 clients. Increases number of client unicast or multicast clocks from 64 to 128 in AT.NTIME.GM.AC or AT.NTIME.GM.DCL
AT.NTIME.GM.USR256 Upgrade to 256 clients. Increases number of client unicast or multicast clocks from 128 to 256 in AT.NTIME.GM.AC or AT.NTIME.GM.DCL
AT.NTIME.ANT GNSS kit. GNSS antenna kit for fixed installation. Includes antenna, 20 m of 50 Ohm coaxial cable and accessories.
AT.NTIME.PSU.AC Adds an additional AC power supply unit to AT.NTIME.GM.AC (PSU-AC2) or AT.NTIME.GM.DCL (PSU-AC-DCL). Includes AC power cord.
AT.NTIME.PSU.DCL Adds an additional DC power supply unit to AT.NTIME.GM.AC (PSU-AC-DCL) or AT.NTIME.GM.DC (PSU-DCL2).
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