GPS-controlled Frequency Standards

The GPS-controlled frequency standards are especially suited for use in calibration departments, providing continuous traceability with no need for external calibration. The stability/24h is excellent;one part in a trillion. (Note! The GPS-88 & GPS-89 are available for sale in the Nordic countries only!). Unlike other GPS-disciplined oscillators (GPSDO), the disciplining process is not hidden to the user. We have incorporated a high-resolution phase comparator, which continuously compares the local oscillator with the GPS transfer standard. The result of that comparison is stored internally and can be transferred on demand to a PC. The frequency offset is displayed on the front panel and the values are stored in NVRAM for a period of at least 2 years.