Frequency Standard

Frequency standards are devices used to generate highly accurate and stable frequencies. They are commonly used in various applications such as telecommunications, navigation systems, scientific research, and calibration of other instruments.

In the supply class Electrical And Electronic Properties Measuring And Testing Instruments, frequency standards are instruments that specifically focus on measuring and testing the frequency of signals. They are designed to provide precise and reliable frequency references for calibration and synchronization purposes.

Frequency standards can be categorized into different types based on their operating principles and accuracy levels. Some common types include:

1. Atomic Frequency Standards: These standards are based on the properties of atoms and their transitions. They use atomic clocks, such as cesium or rubidium clocks, to generate highly accurate and stable frequencies.

2. Quartz Crystal Oscillators: Quartz crystal oscillators are widely used as frequency standards due to their stability and affordability. They utilize the piezoelectric properties of quartz crystals to generate precise frequencies.

3. Oven-Controlled Crystal Oscillators (OCXOs): OCXOs are quartz crystal oscillators that are enclosed in a temperature-controlled oven. The oven helps maintain a stable temperature, which improves the frequency stability of the oscillator.

4. Rubidium Frequency Standards: Rubidium frequency standards use the hyperfine transition of rubidium atoms to generate highly accurate frequencies. They are commonly used in applications where a high level of stability is required.

5. GPS Disciplined Oscillators (GPSDOs): GPSDOs utilize signals from the Global Positioning System (GPS) to discipline the frequency of an oscillator. They provide highly accurate and stable frequencies by referencing the GPS satellite signals.

These are just a few examples of frequency standards available in the supply class Electrical And Electronic Properties Measuring And Testing Instruments. The choice of frequency standard depends on the specific requirements of the application, such as accuracy, stability, and cost.