SparkPNT SXT / SXT-D

SparkPNT SXT (GNSSDO)

Designed and manufactured in Boulder, Colorado, USA, the SparkPNT SXT GNSS Disciplined Oscillator (GNSSDO) and SXT-D GNSS Disciplined Oscillator Plus (GNSSDO+) are the perfect solution for your high-precision timing needs. Based around the multi-constellation, multi-frequency, L5-ready mosaic-T from Septentrio, these are our most accurate GNSS timing products to date. They feature a disciplined 10MHz oscillator: Digitally-Controlled Temperature-Controlled Crystal Oscillator (DCTCXO) on the SXT; Digitally-Controlled Double-Oven Crystal Oscillator (OCXO) on the SXT-D. The mosaic-T also has built-in on-module support for the Fugro AtomiChron L-band timing service.

Under the hood, the SXT and SXT-D are based on the mosaic-T GNSS module from Septentrio, plus the Espressif ESP32-WROVER processor (16MB flash, 8MB PSRAM). The mosaic-T has USB-C connectivity (with Ethernet-over-USB), multiple UARTs and supports full Ethernet connectivity. You can connect the mosaic-T directly to your Ethernet network - our product supports Power-over-Ethernet too. The ESP32 rides shotgun: disciplining the digitally-controlled oscillator and controlling the OLED display. Remote configuration is possible, the ESP32 console can be accessed via TCP. The SXT and SXT-D have multiple power options including USB-C, PoE and 9V-36V DC, making it easy to connect them to a battery-backed supply.

RTK Not Supported

The mosaic-T is a superb GNSS module designed for highly accurate timing applications. But it does not support RTK. It can not be used as a RTK Rover or Base. RTCM output is not supported.

Documentation

• Product Manual - Product manual for the SXT(-D) GNSSDO(+) hosted by GitHub pages.