OSA 5405-S

Oscilloquartz OSA 5405-S GNSS + Iridium STL Receiver, Stratum 3E OCXO

The Oscilloquartz OSA 5405-S is a compact PTP Grandmaster, NTP server and multisource assured timing platform that integrates GNSS and Iridium STL reception into a single low-power device.

Designed for applications where timing resilience is critical, the OSA 5405-S provides two independent satellite timing technologies. GNSS delivers conventional UTC-traceable timing, while Iridium STL provides an authenticated LEO satellite timing source that can maintain synchronization when GNSS is unavailable or compromised.

Its small footprint, low power consumption and flexible mounting options make it suitable for distributed deployments across telecom, defense, smart grid, data center, transportation, finance and broadcast networks.

Key Features

• Integrated GNSS + Iridium STL receiver
• OCXO Stratum 3E oscillator
• PRTC-A timing capability
• IEEE 1588v2 PTP Grandmaster, Boundary Clock and Slave
• High-performance NTP server
• Synchronous Ethernet, SyncE
• Dual Ethernet interfaces with copper and fiber support
• Hardware-based timestamping
• Multiple concurrent PTP profiles
• PTP profile conversion
• PTP and SyncE fallback capabilities
• Integrated Syncjack monitoring and assurance
• IPv4 and IPv6 management
• Compact design for desk, DIN, wall or rack installation
• Maximum power consumption of only 10 W

GNSS + Iridium STL Resilient Timing

A key advantage of the OSA 5405-S is its ability to combine GNSS and STL as distinct satellite timing sources.

The integrated multi-constellation GNSS receiver supports GPS, GLONASS, BeiDou and Galileo and provides hardware-based jamming and spoofing detection.

The STL receiver obtains authenticated timing and location information from the Iridium low-earth-orbit constellation. STL can also operate independently in locations where GNSS reception is unavailable, including installations using an indoor STL antenna.

This architecture makes the OSA 5405-S particularly suitable for networks requiring protection against GNSS outages, interference, jamming and spoofing.

GNSS Performance

The integrated GNSS receiver provides:

• PRTC-A operation
• Accuracy within ±100 ns from UTC
• 72-channel multi-constellation receiver
• GPS
• GLONASS
• BeiDou
• Galileo
• Up to three concurrent constellations
• Fixed-location and navigation modes
• Configurable SNR and elevation masks
• Antenna cable-delay compensation
• Advanced jamming and spoofing detection

Iridium STL Performance

The integrated STL receiver provides:

• Authenticated timing and location from LEO satellites
• Timing accuracy within ±100 ns from UTC, 1 sigma, with outdoor antenna
• Position accuracy within 30 m, 1 sigma, after a one-hour survey with outdoor antenna
• Indoor or outdoor antenna support
• High-power LEO satellite signal reception
• Authenticated signal for increased resilience against manipulation

PTP Grandmaster

The OSA 5405-S provides full IEEE 1588-2008 PTP functionality and can operate as a Grandmaster, Boundary Clock or Slave.

Supported profiles include:

• ITU-T G.8265.1
• ITU-T G.8275.1
• ITU-T G.8275.2
• IEC/IEEE 61850-9-3
• IEEE C37.238
• Enterprise PTP
• SMPTE ST 2059-2
• AES67
• IEEE 802.1AS AVB/TSN
• IEEE 1588 default L2 and L3 profiles

The platform supports up to 64 unicast slaves at 128 pps and provides profile conversion, VLAN support and fixed or dynamic asymmetry compensation.

High-Performance NTP Server

The OSA 5405-S also functions as a compact, security-hardened NTP server.

NTP capabilities include:

• Stratum 1 operation when locked to GNSS
• NTP v1, v2, v3 and v4
• SNTP over IPv4 and IPv6
• Hardware timestamping
• DoS protection
• PTP and NTP on the same interface
• PTP-to-NTP translation
• PTP backup during GNSS outages
• Up to 500,000 NTP transactions per second

Timing Monitoring and Assurance

Integrated Syncjack functionality provides timing-performance monitoring and assurance for physical and packet-based synchronization sources.

Capabilities include:

• Clock TE and TIE measurement
• PTP packet timing analysis
• GNSS, SyncE and PTP reference monitoring
• Raw timing-data collection
• Integration with Ensemble Sync Director

Flexible Interfaces and Installation

The OSA 5405-S provides:

• 100/1000BaseT copper Ethernet
• 1000BaseX SFP fiber
• Synchronous Ethernet
• PPS
• Clock I/O
• IRIG-B
• PPS + Time-of-Day
• Single or dual GNSS/STL antenna configurations
• PoE support

The compact unit measures approximately 103.4 x 22.1 x 100.1 mm, weighs 400 g, and supports DIN, table, wall and rack mounting. Its operating temperature range is -25°C to +65°C.

Applications

The OSA 5405-S is designed for:

• 5G and mobile telecom
• Defense and government
• Critical infrastructure
• Smart grid and power utilities
• Data centers
• Transportation
• Financial networks
• Broadcast facilities
• Resilient PTP networks
• GNSS backup and assurance
• Indoor environments requiring STL-only timing
• Synchronization gateways between telecom and utility networks

Product Positioning

OSA 5422: Best suited for larger, highly configurable synchronization deployments requiring extensive interfaces, expansion cards, advanced PTP/NTP capabilities, high client capacity and optional advanced resilient timing technologies.

OSA 5405-S: Best suited for compact edge deployments where GNSS + Iridium STL timing resilience, low power consumption and straightforward PTP/NTP distribution are the primary requirements.

The platform provides:

• Integrated GNSS + Iridium STL receiver
• Stratum 3E OCXO
• Configurable Clock Input / Output
• Configurable PPS Input / Output
• ETSI / 19" mounting bracket
• PTP synchronization capability
• Broadcast / Enterprise synchronization profile
• Timing monitoring capabilities
• Iridium STL-TIME support

OSA 5405-S Base Configuration*

OSA 5405-S, GNSS + STL Receiver, Stratum 3E OCXO

Included:

• OSA 5405-S hardware
• Integrated GNSS + Iridium STL receiver
• Stratum 3E OCXO
• Configurable Clock Input / Output
• Configurable PPS Input / Output
• ETSI / 19" mounting bracket
• System Software Release 13.5.1 pre-installed
• Broadcast / Enterprise Basic System Software License
• Syncjack OS
• PTP Broadcast profiles
• 1 x Clock Probe
• 1 x PTP Probe
• Default L3 Multicast

Base Hardware PN: 1063904630-01
Pre-installed Software PN: 30-0000149-01
Base Software License PN: 1091904576-01