The core material is changed from PVC to PE to provide more stable signal transmission for the reader.
The barcode reader cables provided by a listed company's original supplier frequently experienced signal transmission instability during the production process, resulting in large-scale product returns and severely affecting production efficiency and brand reputation.
ADAMICU’s engineer was invited to conduct on-site analysis and carry out signal link inspection. Using a professional Fluke tester, it was found that the characteristic impedance of the scanner cable was significantly lower than the standard value, which is the root cause of the signal instability. Further destructive testing revealed that the original cable core material was PVC, which has a high dielectric constant, causing great signal attenuation and making it unable to maintain stable impedance matching in high-speed transmission scenarios.
Product Design
Based on the test results, our engineers have decided to upgrade the core material of the wires to foamed PE. Foamed PE has more stable dielectric properties, which can effectively improve the characteristic impedance of the cables and ensure the integrity of signal transmission. We have also simultaneously optimized the twisting process and shielding structure of the cables to ensure signal integrity is maintained even in complex industrial electromagnetic environments.
Results Verification
After sample production, the products were strictly tested using Fluke instruments, and their characteristic impedance consistently met the 100Ω standard.
On-site measurements by the customer showed that the reader signal transmission was stable and highly compatible with the equipment, with no recurrence of previous disconnection or interference issues.
Project Outcome
ADAMICU through a comprehensive technical approach encompassing electrical testing, material analysis, structural design, and practical verification, helped the customer fundamentally eliminate signal transmission risks and enhance the overall product reliability.
ADAMICU will continue to be technology-driven, providing customers with stable and professional connectivity solutions.
Comparison of PVC and Foamed PE Materials
| Feature | PVC material | Foamed PE material (used this time) |
| Dielectric constant | Relatively high (about 3.0-4.0) | Low (about 1.5-2.2) |
| Signal attenuation | Large, particularly noticeable at high frequencies | Small, suitable for high-frequency, high-speed transmission |
| Impedance Stability | Varies significantly with frequency/temperature | High stability, precise impedance control |
| Applicable Scenarios | Ordinary low-voltage power or control circuit | High-speed data communication, high-frequency signal transmission |
