GT-804Rackmount Multi-GNSS Disciplined Oscillator
Description:
GT-804 is a 1U rackmount GNSS Disciplined Oscillator (GNSSDO) which supports 4 pairs of 1PPS and 10MHz clock outputs on the back panel. GT-804 is equipped with the u-blox M8, Multi-GNSS, high-sensitivity timing engine, OCXO, DPLL/DCO, and SoC. This GNSSDO provides stable 1PPS and 1PPS synchronized 10MHz clocks. The holdover time of ±1.5us is better than 4 hours. GT-804 supports positioning of multi-satellite systems – GPS, GLONASS, GALILEO, BEIDOU, QZSS, SBAS. Vast number of visible satellites allows stable and better clock quality of 1PPS/10MHz. Additional filtering design makes clocks even more stable.Specifications
| Chipset | u-blox M8 timing engine + OCXO |
|---|---|
| GNSS systems | GPS, GLONASS, Galileo, BeiDou, QZSS, SBAS |
| Frequency bands | L1 |
| Accuracy | 1PPS holdover ±1.5 µs / 4 h |
| Features | Precise timing, Holdover |
| Interface | USB |
| Output | NMEA, 1PPS, 10MHz |
| Update rate | Up to 1 Hz |
| Power | 40–60 V |
| Size | 1U rackmount |
| Operating temperature | -40 ~ 85 ℃ |
| Antenna | External (connector) |
Typical values. See the product flyer (PDF) for full specifications.

