A video recorder is a magnetic tape recorder used to record television images and accompanying sound, which can store video signals of television programs and later send them back to the television transmitter or directly to the television. A video recorder is a recording and playback device in a closed circuit television monitoring system, which requires a very long recording time. Most dedicated video recorders for monitoring systems can record 24H-960H recordings. In addition, the video recorder must also have a remote control function to facilitate remote operation of the recorder, or to automatically operate the recorder using control signals in a closed circuit television system. Hard disk recorders are mainly divided into two categories: one is PC based hard disk recorders based on computer architecture (also known as industrial control hard disk recorders), and the other is embedded hard disk recorders based on embedded processors. In terms of market applications, each has its own advantages. Early hard disk recorders were PC based hard disk recorders based on computer architecture, and later the market share of embedded hard disk recorders gradually increased, The market share of the two is basically the same
Function of testing report:
1. Project bidding: Issue authoritative third-party CMA/CNAS qualification report
2. Online e-commerce platform entry: Quality inspection report recognized by major e-commerce platforms 3. Used as a sales report: issuing legally effective testing reports to make consumers more confident 4. Papers and research: Provide professional personalized testing needs 5. Judicial services: providing scientific, fair, and accurate testing data 6. Industrial problem diagnosis: Verify the troubleshooting and correction of industrial production problemsBaijian and testing process:
1. Telephone communication and confirmation of requirements
2. Recommend solutions and confirm quotations 3. Mail samples and arrange testing 4. Progress tracking and result feedback 5. Provide reports and after-sales service 6. If urgent or priority processing is requiredTesting and testing characteristics:
1. The testing industry is fully covered, meeting different testing needs
2. Fully cover the laboratory and allocate localized testing nearby3. Engineers provide one-on-one services to make testing more accurate
4. Free initial testing, with no testing fees charged
5. Self service order delivery for free on-site sampling
6. Short cycle, low cost, and attentive service 7. Possess authoritative qualifications such as CMA, CNAS, CAL, etc 8. The testing report is authoritative and effective, and is generally used in China