Product Description
Product Description
The SparkFun SparkPNT GNSS Disciplined Oscillator Plus is a specialized GNSS RTK module for high-precision timing and frequency reference applications. The SparkPNT GNSS Disciplined Oscillator Plus variant is built around the Septentrio mosaic-T and combines multi-constellation, multi-frequency GNSS capability with a disciplined 10MHz Rakon OCXO. This design targets applications that require stable timing pulses, accurate frequency output, and resilient operation under challenging GNSS conditions.
The system uses an Espressif ESP32-WROVER with 16MB flash and 8MB PSRAM for oscillator disciplining and OLED display control. Connectivity includes USB-C with Ethernet-over-USB, multiple UARTs, and full Ethernet with Power-over-Ethernet support. The GNSS antenna input, Pulse-Per-Second output, disciplined 10MHz output, and EventA input are provided through SMA connectors, while general-purpose I/O is available through screw terminal connections.
Technical Features
- Septentrio mosaic-T GNSS receiver module with multi-constellation, multi-frequency support, L1/L2/L5-ready
- Disciplined 10MHz oscillator based on the Rakon STP3593LF double-oven OCXO
- Time pulse precision of 5ns; better than 1ns with optional Fugro AtomiChron subscription
- Event accuracy better than 20ns
- ESP32-WROVER for control, remote configuration, and display management
- USB-C, Ethernet-over-USB, Ethernet with PoE support, and multiple UART interfaces
- SMA connectors for GNSS antenna, PPS output, 10MHz output, and EventA input
- Selectable 3.3V or 5V I/O levels and microSD card slot for logging
Application Areas
Typical applications include laboratory reference systems, time and frequency synchronization for measurement equipment, network infrastructure requiring precise timing, remote installations with Ethernet connectivity, and evaluation setups for GNSS-based timing solutions. The robust design and strong holdover characteristics during GNSS outages also make it suitable for demanding field deployments.
What's Included
- 1x SparkFun SparkPNT GNSS Disciplined Oscillator Plus GNSS RTK module
