DIN 44402-7 Measurement of Electrical Properties of Electronic Tubes and Valves - Hiss and Hum Measurement Methods

EUROLAB, with its state-of-the-art accredited laboratories and expert team, offers precise and rapid testing services within the scope of DIN 44402-7 test. Hiss and hum are types of noise that can affect the performance of electronic circuits, especially in audio applications. Measuring these factors involves assessing the level of unwanted noise caused by a device.

The purpose of this test is to evaluate the noise contribution of an electronic tube or valve in the signal processing process. The two main types of noise, "hiss" and "hum," are often critical in audio applications. This test aims to evaluate the audio performance of the device by identifying and measuring the unwanted sound levels of the device.

It is a type of random, broadband noise and usually occurs when there is no signal. Measuring the level of sensation in electronic circuits helps evaluate the performance of the device in silence.

It is a type of regular periodic signal and usually originates from power supplies. This test aims to evaluate possible problems with the device's power line by determining noise levels resulting from the device's power frequencies (for example, 50 Hz or 60 Hz).

This standard provides guidance for industries and application areas that wish to evaluate audio performance in the manufacture and use of electronic tubes and valves. These measurements are especially important in areas with sensitive audio requirements, such as audio equipment and audio recording applications.

EUROLAB assists manufacturers with DIN 44402-7 test compliance. Our test experts, with their professional working mission and principles, provide you, our manufacturers and suppliers, the best service and controlled testing process in our laboratories. Thanks to these services, businesses receive more effective, high-performance and quality testing services and provide safe, fast and uninterrupted service to their customers.