The LC XO Gen 3 is an ultra‑small, low‑cost OCXO‑based GPSDO module delivering ±35 ns RMS 1 PPS accuracy when GPS‑locked and holdover stability better than ±20 µs over three hours after 72 hours of GPS conditioning. It outputs 1 PPS via 3.3 V CMOS and supports SCPI‑99 and NMEA through TTL‑level serial control. Operating at the GPS L1 C/A 1574 MHz band, it works with active or passive antennas and features a 70‑channel receiver supporting GPS, Glonass, Galileo, BeiDou, QZSS, and SBAS. Sensitivity reaches –148 dBm for acquisition and –167 dBm for tracking, with TTFF under 30 seconds cold and 2 seconds warm or hot. ADEV is below 5E‑12 at 10,000 seconds, with warm‑up under five minutes to 1E‑08 accuracy on a 3.3 V supply.

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