Frequency Standards

On December 23, 2016, an agreement was reached between Altaria Services and Spectracom Corporation for the rights to products marketed under the Pendulum brand.

Please visit the Pendulum Instruments website for current information about this product.

For a short period of time, we will maintain links to previous versions of product documents and files here.


Frequency Standards

  • Portable Frequency Standard
  • Stand-alone Frequency Standard
  • GPS Frequency Standard System

Frequency Standards Overview

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.

Key specifications:

GPS-12R/12RG
  • GPS-disciplined Rubidium clock
  • Internal battery option for transportation and mains-free field use
  • Two switchable 1.544 MHz (T1) or 2.048 MHz (E1) front-panel outputs
  • 1 PPS front-panel output
  • 1, 5 & 10 MHz outputs
  • User friendly touch panel, selectable for six language
  • Use of both GLONASS and GPS gives better signal coverage (GPS-12RG)
GPS-88/89
  • GPS-controlled frequency standard
  • Choice of Rubidium or ovenized crystal oscillator
  • Traceable internal calibration system approved by Swedish National Testing and Research Institute 
  • Remote monitoring via Ethernet interface
  • No doubt-about-accuracy via display of frequency offset
6688/6689
  • Stand-alone frequency reference standard
  • Rubidium (6689) or high stability ovenized crystal oscillator (6688)
  • Distribution amplifiers for 5x10 MHz and 1x5 MHz outputs as standard
  • Optional 10x10 MHz outputs
  • 0.001 ppm aging in 10 years (Rubidium)

GPS-12R Portable GPS Frequency Standard Details

Accuracy, High-Stability and Performance

The GPS-12R frequency standard offers traceable Cesium-like stability at a very attractive price. Synchronized to the GPS satellite system, the GPS-12R provides both short and long–term time and frequency stability, assuring precision and accuracy.

We offer the following models:

  • GPS-12R - GPS-controlled Rubidium frequency reference giving near-Cesium stability
  • GPS-12R/HS – high-end model including a high-stability Rubidium for optimum phase noise performance
  • GPS-12RG – Glonass/GPS-controlled High-stability Rubidium reference

GPS-88/89 GPS-based Frequency Standard Details

Traceable Accurate 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.

Long-term frequency stability is provided from the built-in Cesium-controlled standards in the GPS-satellite. Very high short-term stability comes from the built-in oven controlled crystal oscillator found in the GPS-88; or the built-in Rubidium atomic clock installed in GPS-89, as its local oscillator.

6688/6689 Stand-alone Frequency Standard Details

Ideal Reference for Multiple Testers

These Pendulum frequency standards suit the highest demands for stability. All frequency standards offer multiple buffered outputs (5x or 10x outputs of 10 MHz sine). Choose from the low-cost 6688 based on a very-high-stability oven-controlled SC-cut crystal oscillator or the 6689 with a built-in Rubidium atomic clock. These standards are suited for use in automatic test systems, for example in the production department of telecommunications companies, especially when multiple instruments/testers need to be supplied with a stable frequency reference.

Resources

External Resource

More Info

On December 23, 2016, an agreement was reached between Altaria Services and Spectracom Corporation for the rights to products marketed under the Pendulum brand.

Please visit the Pendulum Instruments website for current information about this product.


Offsite File
Wednesday, July 19, 2017
By: Spectracom

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