DDA55 AFJ Italy 4-channel click click sound analyzer

Introduction：

The DDA55 is a four-channel click click sound analyzer from AFJ-instrument, replacing the discontinued CL55C. The device complies with the GB4343.1 and CISPR 14-1 test standards, which describes how to measure the electromagnetic radiation generated by household appliances and portable hand tools, including the discontinuous interference (intermittent interference) generated on the power cable, commonly known as "click click". The standard describes the phenomenon of discontinuous interference (intermittent interference) generated by household appliances and portable hand tools, including power cables, which is commonly referred to as "clicking". "Niko" is defined as interference with a duration of less than 200ms and an interval of more than 200ms between two interferences. All embedded control devices, electronic switches, temperature-controlled heat generating devices, and commonly used home appliances as well as industrial lighting equipment generate intermittent interference emissions with different amplitudes and repetition rates from the power cord. These interferences are usually caused by high interference intensity, but low repetition rate. A pulse-like test burst is visible on the clicking receiver.

Product Features:

In CISPR14-1 and CISPR16-1-1, the process of determining nicking is very complex, and it is very difficult to determine whether nicking is compliant with the standard manually, so standard-compliant equipment and software are needed to complete the test manually instead, please see the detailed introduction document below.

Due to the "clicking sound" interference clearly exceeds the EMI test standards required in the conducted emission limits, and the interference duration is very short, CISPR14-1 for the interference of such products to develop test standards, such as the IEC61000-6-3 product standards for residential and lighting limits, industrial standards IEC61000-6-4, EN55103 for professional video/audio products limit test standards, all require these products need to be tested for a long time, each product single-phase test requires a long time, and each product single-phase test requires a long time. For example, IEC61000-6-3 for residential and lighting, IEC61000-6-4 for industrial, and EN55103 for professional video/audio products require long testing times, with single-phase testing of each product taking several hours to complete. The DDA55 Niko Analyzer, designed by AFJ-instrument, Italy, contains four receiver channels that can be tested synchronously, and each fixed receiver channel can be tested independently, thus saving a lot of testing time.

Four channels can be tested simultaneously

Automatic receiver attenuation setup chart

DDA55 has four parallel independent channels, channel fixed frequency (150kHz, 500kHz, 1.4MHz, 30MHz), each test channel can perform "Peak and Quasi-Peak" detector test, the test methodology and test equipment is fully compliant with the requirements of CISPR16-1-1 standard, quasi-peak detector design based on the CISPR 14-1 standard test, integrated oscilloscope (time domain measurement) function, the system also provides a CISPR16-1-1 standard compliant Peak Detector. Peak detector design according to CISPR 14-1 standards for testing, integrated oscilloscope (time domain measurement) function, the system also provides CISPR16-1-1 standards in line with the requirements of the four, a single, any number of interfering pulse generator for calibration, if you need to do the Japanese VCCI radiation standards, you can ask euttest to provide 500kHz / 550kHz If the Japanese VCCI radiation standard is required, euttest can be asked to provide the 500kHz/550kHz option - Fixed Frequency RF Receiver Module to complete the test.

Main technical parameters: