Digital walkie talkie is a digital walkie talkie designed using digital technology. Digital walkie talkies digitize speech signals and propagate them in digital encoding, meaning that all modulation on the transmission frequency of the walkie talkie is digital. The basic principle of digital walkie talkie is to convert analog voice into digital signal, and then modulate it to RF. Since the transmission is a digital signal, of course, this device can also directly transmit data. The emergence of digital walkie talkies is also aimed at saving radio frequency spectrum, so most digital walkie talkies are equivalent to a voice channel occupying 6.25kHzk bandwidth, which is half the frequency saved compared to general analog walkie talkies
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