{"title":"SparkPNT GNSS Disciplined Oscillator Plus","handle":"sparkpnt-gnss-disciplined-oscillator-plus","url":"/products/sparkpnt-gnss-disciplined-oscillator-plus","description":"SparkPNT GNSSDO+ is a high-precision time and frequency reference built around the Septentrio mosaic-T GNSS module and a Rakon STP3593LF double-oven OCXO. It is intended for demanding timing applications where stable 10MHz and pulse-per-second references are needed, including labs, server racks and remote equipment.The mosaic-T provides multi-constellation, multi-frequency GNSS timing with AIM+ resilience for challenging conditions such as jamming or spoofing. The onboard ESP32-WROVER disciplines the OCXO and controls the Qwiic OLED display, while remote configuration is available through the ESP32 serial console over TCP.Connectivity is practical and robust: the GNSS antenna, PPS output, disciplined 10MHz output and EventA input are all on SMA connectors, with additional IO on a 3.5mm cage-screw header. Power can come from USB-C, Power-over-Ethernet or an external DC source, and the unit is housed in a custom extruded aluminium case with machined end panels and slotted flanges for mounting.The included active L1/L2/L5 antenna is certified by the National Geodetic Survey, and AtomiChron® service is delivered over-the-air using the same GNSS antenna with no internet access required. Supporting documentation and files include a quick start guide, schematic, product manual, hardware repository, ESP32 firmware and firmware binaries.Features:High-precision GNSS timing: Based on the Septentrio mosaic-T module.Multi-constellation support: Uses all-constellation multi-frequency capabilities.L1/L2/L5-ready: Designed for use with the included active L1/L2/L5 antenna.AIM+ resilience: Helps maintain timing performance under GNSS jamming or spoofing conditions.Disciplined OCXO: Uses the Rakon STP3593LF Double-Oven OCXO for clock stability, accuracy and holdover.10MHz reference output: Provides a disciplined 10MHz output via SMA.Pulse-per-second output: Provides a PPS output via SMA.Event input: Provides an EventA input via SMA.Multiple host interfaces: Includes USB-C with Ethernet-over-USB, multiple UARTs and full Ethernet connectivity.Power-over-Ethernet: Can be connected directly to an Ethernet network with PoE support.Remote configuration: Provides access to the internal ESP32 serial console via TCP.Selectable IO voltage: IO voltage can be selected between 3.3V and 5V.Serviceable storage: The microSD card edge protrudes slightly for easier removal and reinsertion.Mountable enclosure: Custom extruded aluminium case with machined end panels and slotted flanges.NGS-certified antenna: Included antenna has National Geodetic Survey certification.AtomiChron® delivery: Delivered over-the-air using the supplied GNSS antenna, with no internet access required.Not RTK-capable: The mosaic-T does not support RTK Rover, RTK Base or RTCM output operation.Specifications:GNSS module: Septentrio mosaic-TGNSS capability: Multi-constellation, multi-frequency, L1/L2/L5-readyTime pulse precision: 5nsTime pulse precision with optional Fugro AtomiChron® subscription: better than 1 nanosecondEvent accuracy: better than 20nsProcessor: Espressif ESP32-WROVERFlash: 16MBPSRAM: 8MBOscillator: STP3593LF Double-Oven OCXO from RakonOscillator family: ROX5242T1N FamilyDisciplined oscillator output: 10MHzFrequency calibration at 25°C: better than 50ppbFrequency stability ageing: ±0.2ppb per dayFrequency stability with temperature: ±0.03ppbFrequency stability temperature range: -32°C to +70°COCXO control: digital control via I²CAllan Deviation with AtomiChron® enabled: below 1E-14 at 10000 secondsmosaic-T USB connectivity: USB-CUSB networking: Ethernet-over-USBUART connectivity: multiple UARTsEthernet connectivity: full Ethernet connectivityRemote console access: internal ESP32 serial console via TCPGNSS antenna connector: SMAPulse-Per-Second output connector: SMADisciplined 10MHz output connector: SMAEventA input connector: SMAIO connector: 3.5mm header with cage screw connectionsSelectable IO voltage: 3.3V and 5VInternal display: Qwiic OLED displayPower option: mosaic-T USB-C connectionPower option: ESP32 USB-C connectionPower-over-Ethernet input: 36V to 57VExternal DC power source: between 9V and 36VUSB-C power adaptor: included 65W Power Delivery Wall AdapterGNSS SMA antenna power: 3.3VIncluded antenna: active L1/L2/L5 antennaNGS antenna listing: SFESPK6618HRTK support: not supportedRTK Rover configuration: not supportedRTK Base configuration: not supportedRTCM output: not supportedUse it where a stable GNSS-disciplined frequency reference is required, but note that it is a timing product rather than an RTK positioning receiver.","vendor":"SparkFun","product_type":"GNSS Disciplined Oscillator","in_stock":false,"options":[],"variants":[{"id":16028,"title":"Default Title","sku":"SF-GPS-30777","mpn":"GPS-30777","price":0.0,"on_sale":false,"in_stock":false,"available_quantity":13}]}