Provide various AV/IT products testing and certification

With the advent of the Internet era, IT/AV multimedia has become an indispensable part of people's life, and its security, electromagnetic compatibility and reliability issues have become the focus of manufacturers and consumers.

Product range:

Radio, television, combination stereo, active speaker, tuner, Karaoke, sound mixer, video recorder, language repeater, television, monitor, Projector, TV antenna amplifier, video modulator, frequency converter, audio and modem, satellite television broadcasting receivers, set-top boxes, digital TV receiver, electronic organ, central processing unit (CPU), printers, monitors, scanners, picture-tel, fax, telephone switches, transponder, radio and television transmission receiving equipment, pagers, separation device, rotary steam Type DRYER, ENGRAVING machine, LASER cutting machine, SAwing machine and SLicing machine, CENTRIFUge, injection machine, oven and heating furnace, ion implantation machine, microscope, measuring and testing instruments, color separators, spectrometers, optical ray equipment, word processors, etc.

A telephone exchange is a special - purpose user exchange. It has a number of telephone sharing lines, suitable for institutions, organizations, small and medium enterprises and other units, can also be used for residential and secretary telephone. Group telephone exchange does not need a full-time operator and maintenance personnel, each department can understand the whole system through the indicator light. When an external call is made, it can be answered by any phone and transferred to the called party. When any phone wants to make an external call, press the corresponding key representing the idle external line to dial the external line.

Testing standard

Switches CE EN55024 standard standard is introduced

EN55024 CISPR24 Information Technology Equipment, immunity characteristics, Limits and Measurement Methods, EN55024 is equivalent to CISPR24 and, as the name implies, applies to information technology equipment (ITE). EN55024 defines requirements for immunity testing of information technology equipment relating to continuous and transient conduction and radiation interference. Standard tests include ELECTROSTATIC DISCHARGE (ESD), ELECTRICAL FAST TRANSIENT (EFT), surge, power frequency magnetic field, power outage, and radio frequency interference (RFI).

EN55024 establishes requirements that can provide a sufficient level of intrinsic immunity so that the device operates as intended in its environment. Test requirements and apply to a port-by-port approach. Ports are defined and described in the standard. These ports include the entire chassis, DC power supply, AC power supply, Earth, signal and telecommunications ports.

Compliance with this standard may in part be presumed to be in compliance with the European EMC Directive 2004/108/EC. Most products also require emission matching standard N55022 to measure the level of spurious signal generated by 1TE.
In addition, devices powered through AC power may require additional testing for powerline harmonics and powerline flicker.

This section describes the files required for CE certification of network switches?

1. The manufacturer shall provide product manuals and a list of spare parts
2. Safety design structure drawing, size and structure information of accessories 3 Product technical conditions (or enterprise standards)
4 Electrical schematic diagram of control cabinet
6. List of main components or raw materials
7. Copy of machine or component certificate
8. Other materials that need to be tested

Environmental reliability Testing

High and low temperature resistance test, heat and humidity resistance, high and low temperature impact, high and low temperature alternating, mechanical vibration, mechanical impact, low pressure (vacuum) test, IP grade, dustproof water release test, gas corrosion (single/multiple), salt spray corrosion test (neutral, acid, compound), etc.

Class specific tests

Battery charging and discharging test, impact test, impact test, drop test, ROhs testing, REACH, halogen detection, temperature and humidity environment test, failure analysis, components selection, pressure test, light aging test, sand and dust test, get wet in the rain test, vibration test, high speed test, mechanical shock test, biological environment test, salt spray test and reliable integrated environment Sex test, simulated packaging and transportation test, gas corrosion test, slice test, etc.

Energy efficiency test

Energy saving testing, energy efficiency testing

Electrical performance testing

Operating voltage, operating current, speed range, power, conductivity, dielectric constant, dielectric loss, field strength (breakdown voltage), etc

2. Certification services

The test report issued by Global Zhongyi has legal effect and can be used in scenarios such as the entry of supermarkets, product appeals, anti-malicious rights protection, and auctions (appeals and auctions must meet Party A's testing requirements).