VIAVI SecurePNT 6200 Series resilient PNT timing clock, front view

VIAVI / Series · Resilient PNT

VIAVI SecurePNT 6200 Series Resilient PNT Timing Clock with SecureTime altGNSS/eGNSS Services

Compact, resilient PNT timing clock combining multi-frequency GNSS with SecureTime LEO and GEO satellite timing sources for critical infrastructure.

GPS/GNSS locked: <5 ns RMS
altGNSS LEO locked to Iridium's STL service: <65 ns RMS
eGNSS GEO locked to Fugro AtomiChron service on Inmarsat: <5ns RMS
altGNSS GEO locked to Fugro AtomiChron service on Inmarsat: <100 ns p2p

View Models Datasheet

Overview

The VIAVI SecurePNT 6200 Series is a compact timing reference for critical infrastructure. It uses TrustedPNT technology and a zero-trust multisource platform that combines GPS/GNSS with alternative and enhanced satellite timing sources, so timing and positioning can continue when GNSS is jammed, spoofed or unavailable.

The units are intended for network operators, back-office timing, data centers, financial transaction timing, deep-indoor timing and positioning, ship-board timing and R&D labs that need a timing and positioning reference that does not depend on GNSS.

SecureTime services

On top of GPS/GNSS, the series can use VIAVI SecureTime services: altGNSS LEO, a GNSS-independent encrypted source powered by Iridium STL; eGNSS GEO, an enhanced GNSS source with authenticated spoofing detection powered by Fugro AtomiChron on Inmarsat; and altGNSS GEO, a GNSS-independent source powered by Fugro on Inmarsat and other satellite constellations. S models include the LEO STL receiver and L models include the GEO-L receiver.

Retrofitting legacy clocks

The patented µPNTranscoder generates a GPS L1 C/A RF output signal. With it, a SecurePNT 6200 placed between the antenna and an existing GPS clock receiver turns legacy GPS/GNSS clocks into resilient multisource PNT clocks without replacing them. Holdover is provided by an internal DOCXO (6250 models) or rubidium oscillator (6260 models), and external 10 MHz and 1 PPS inputs accept a Cesium clock.

Models in this series

Model	Description
PNT-6250L	SecurePNT 6200 PNT-6250L Resilient PNT Clock with DOCXO Holdover and GEO-L Receiver Resilient PNT clock and GPS transcoder with multi-frequency GNSS, GEO-L satellite receiver and DOCXO holdover.	Details →
PNT-6250S	SecurePNT 6200 PNT-6250S Resilient PNT Clock with DOCXO Holdover and STL LEO Receiver Resilient PNT clock and GPS transcoder with multi-frequency GNSS, LEO STL receiver and DOCXO holdover.	Details →
PNT-6260L	SecurePNT 6200 PNT-6260L Resilient PNT Clock with Rubidium Holdover and GEO-L Receiver Resilient PNT clock and GPS transcoder with multi-frequency GNSS, GEO-L satellite receiver and Rb SA55 holdover.	Details →
PNT-6260S	SecurePNT 6200 PNT-6260S Resilient PNT Clock with Rubidium Holdover and STL LEO Receiver Resilient PNT clock and GPS transcoder with multi-frequency GNSS, LEO STL receiver and Rb SA55 holdover.	Details →

Key Features

L1/2/3/5/6+PPP GNSS receiver supporting GEO satellite signals, with optional LEO STL receiver
Holdover options: internal DOCXO or Rb oscillator
10 MHz and 1 PPS inputs for external Cesium clock holdover
10 MHz and 1 PPS outputs
Meets PRTC-A ITU-T G.8272 specification
NEBS certified
Half 19-inch width, rack-mountable
Intelligent zero-trust multisource switchover between GNSS, STL LEO, GEO Sat, 10 MHz and 1 PPS
Patented µPNTranscoder GPS L1 C/A RF output to retrofit legacy GPS/GNSS clocks
Augmented PNT clock for GPS/GNSS-denied or indoor environments
SecureTime altGNSS LEO source with encryption, traceable to UTC(NIST)
SecureTime eGNSS GEO and altGNSS GEO sources with authenticated spoofing detection and mitigation
Single or dual redundant +12 V DC inputs
Field firmware upgrades through USB or RS-232 serial ports

Specifications

1 PPS Stability

GPS/GNSS locked	<5 ns RMS Traceable to UTC/NIST
altGNSS LEO locked to Iridium's STL service PNT-6250S, PNT-6260S	<65 ns RMS Traceable to UTC/NIST
eGNSS GEO locked to Fugro AtomiChron service on Inmarsat	<5ns RMS Traceable to UTC/NIST
altGNSS GEO locked to Fugro AtomiChron service on Inmarsat	<100 ns p2p Traceable to UTC/NIST

Holdover Performance

Holdover (over 24 hours @ 25°C, no airflow, no motion) PNT-6250S, PNT-6250L	<2 µs with DOCXO After 7 days with GNSS reference; datasheet lists models 6250/6250S
Holdover (over 24 hours @ 25°C, no airflow, no motion) PNT-6260S, PNT-6260L	<250 ns with Rb After 7 days with GNSS reference; datasheet lists models 6260/6260S

µPNTranscoder

RF output	GPS L1 C/A RF output signal to retrofit legacy GPS/GNSS clock equipment Patented multisource-to-GPS transcoder
NMEA messages	USB and RS-232 connectors, GGA, RMC, ZDA, GSV, PASHR, GSA

GPS/GNSS Receiver

Multifrequency	L1, L2, L3, L5 Features list on page 1 states L1/2/3/5/6+PPP
Constellations	GPS/Galileo (SBAS)/GLONASS/BeiDou/QZSS/NAVIC
Acquisition (C/NO threshold)	33 dB-Hz
Tracking (C/NO threshold)	20 dB-Hz
TTF cold start	<45 sec
TTF warm start	<20 sec
Reacquisition	1 sec
GEO Sat Signals	Integrated GEO receiver
STL LEO receiver PNT-6250S, PNT-6260S	A VIAVI leading edge design
Sensitivity	-100 dBm tracking
Intelligent zero-trust multisource switchover	GNSS (4 frequencies), STL LEO, GEO Sat, 10 MHz, 1 PPS

Inputs and Outputs

External reference inputs for Cesium holdover clock	10 MHz Sine Wave (0 dBm to +15 dBm), 1 PPS CMOS options
10 MHz output	2x +13 dBm 10 MHz sine wave, low phase noise option
10 MHz accuracy	<±0.2E-010 After 20 min with GNSS
1 PPS outputs	2 x 1 PPS Outputs via SMA (Coax) (>1K Load), 3.3 V
1 PPS input	1 x 1 PPS Input, SMA, >1 K Load

Oscillator

Frequency	10 MHz, DOCXO or Rb oscillator option
Stability over temperature (holdover mode) PNT-6250S, PNT-6250L	±0.2E-09 -10° to +75°C, DOCXO option
Stability over temperature (holdover mode) PNT-6260S, PNT-6260L	±5E-011 -10° to +75°C, Rb option
Spurs	<-110 dBc/Hz

Power

Supply voltage (Vdd)	Single or Dual redundant +12 V DC inputs
Power consumption PNT-6250S, PNT-6250L	<10 W DOCXO variant

Environmental

Operating temperature range	-25°C to +75°C Forced air environment
Storage temperature range	-45°C to +85°C

Mechanical

Size	Half 19” width, 1.64” x 8.53” x 8” (H x W x D)
Weight	1.5 lbs

Connections

RF antenna (one for STL, one for GNSS)	SMA Antenna power enable controls on both ports
10 MHz in/out, 1 PPS in/out, TTL status	SMA
In situ firmware updates	Fully field upgradeable through USB or RS-232 serial ports

Compliance

Compliance marks	CB: Scheme International Safety; CE: EU Safety and EMC; FCC: USA EMC; RCM: Australia/New Zealand EMC
Emissions	FCC Part 15 (Class A), ICES 003 (Class A), ETSI EN 300 386, CISPR 32, EN 55032, ETSI EN 303 413, ETSI EN 301 489-1, ETSI EN 301 489-19
Immunity	ETSI EN 300 386, ETSI EN 301 489-1, ETSI EN 301 489-19, EN 61000-4-2 ESD, EN 61000-4-3 radiated immunity, EN 61000-4-4 EFT, EN 61000-4-5 surge, EN 61000-4-6 low frequency common immunity, EN 61000-3-2 harmonic emission, EN 61000-3-3 voltage fluctuations and flicker emissions, EN 61000-4-11 voltage dips and interruptions
Safety	IEC 62368-1, EN 62368-1
Other	NEBS GR 1089-CORE
Directives	Safety Directive 2014/35/EU, EMC Directive 2014/30/EU, Radio Equipment Directive (RED) 2014/53/EU, RoHS Directive 2011/65/EU and the (EU) 2015/863 amendment

Applications

Retrofitting legacy GPS/GNSS clock equipment
Critical infrastructure timing under Presidential Executive Order 13905
Timing reference for 5G equipment
Enhanced Primary Reference Time Clock (ePRTC) referencing
High-performance disciplined referencing with IEEE-1588, LEO STL, RF distribution and multi-frequency GNSS
Financial services
Power
Industrial automation
Logistics and transportation
Telecommunications
Emergency response
Defense
Data centers
Ship-board timing
R&D laboratories

Options & Accessories

Option	Description
22181620	SecureTime altGNSS GEO-L Helical Antenna — GEO-L helical antenna, 1518 to 1559 MHz, +39 dBiC total transducer gain, IP67, TNC female connector; compatible with SecurePNT 6200L