Frequency & Time Standards

Very precise GPS-controlled Rubidium reference clocks for various applications offering unique traceability and portability.


Pendulum brand frequency standards offer extreme accuracy for applications in telecommunications, calibration laboratories, automated test systems and design departments.

GPS-disciplined references offer traceable Cesium-like stability at an attractive price. Units are self-calibrating. A stand-alone high stability frequency standard is available where traceability to external reference is not required.


  • Get the accuracy and stability of a Cesium clock at a fraction of the cost
  • Traceable self-calibrating Frequency Standard. No need to send away for external calibration. Save time and money. (GPS-88/89)
  • Bring near-Cesium stability to the field with no warm-up time. No need for hours of waiting time. (GPS-12R/HS plus internal battery)
  • Easy-to-use, and operate. No configuration via PC needed
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