As the requirements for high-speed signal transmission and lightweight design of electronic devices continue to increase, micro coaxial cable, with its excellent anti-interference performance, high-speed transmission capabilities, and flexibility, has been widely used in high-precision equipment such as smartphones, tablets, vehicle display systems, and camera modules. However, the connection quality of this type of cable directly affects the signal stability and service life of the entire unit, so the reliability of its open-short circuit detection is particularly critical. This article takes HRS DF56-30P-0.3SD as an example to analyze the standard detection process for micro coaxial cables.
HRS DF56-30P-0.3SD connector introduction
HRS DF56-30P-0.3SD is a super miniature, high-density PCB-to-cable connector launched by Hirose Electric of Japan, specifically designed for high-speed signal transmission equipment. Its main features are as follows:
Ultra-fine pitch design: Pitch spacing only 0.3mm, compatible with high-density wiring requirements.
Supports ultra-fine coaxial cables: perfectly compatible with micro coaxial cable, suitable for high-speed signal transmission scenarios.
Secure locking structure: Equipped with vibration resistance and anti-loosening functions, ensuring stable connection.
Multi-channel signal capability: 30 terminal design, meets parallel transmission of multiple signals.
Wide application fields: Often used in devices with high requirements for size and signal integrity, such as smartphones, tablets, in-car cameras, and security modules.
Second, the standard process for detecting short-circuits in ultra-fine coaxial cable bundles
To ensure the product's quality upon leaving the factory, the micro coaxial cable harness must undergo a systematic open-short circuit detection after assembly. The following are the standard detection steps:
Connector terminal pre-inspection
Check the terminal status of HRS DF56-30P-0.3SD to ensure there are no issues such as loose connections, damaged, or misaligned terminals, and to ensure the connector is intact and undamaged.
Open Test
Use a professional harness tester to individually check the conductivity between each core wire and the terminal, confirming there are no phenomena such as broken wires, loose soldering, or poor crimping.
Short Circuit Test
Check for short circuits between core wires, between core wires and ground wire, and between the shield layer, to prevent signal interference or motherboard damage.
• High Voltage / Insulation Test
According to the project requirements, conduct insulation withstand voltage tests on the harness from 300V to 500V to verify its resistance to high-frequency cross-talk and insulation performance.
• Appearance re-inspection
Finally confirm the appearance of the connector terminals, lock tabs, and solder joints to ensure there are no abnormalities such as contamination, deformation, or excess solder.
The open-short circuit detection of extremely fine coaxial cable bundles is a crucial link to ensure the stability and long-term reliability of electronic device signal transmission. Especially when using high-density precision connectors such as HRS DF56-30P-0.3SD, it is necessary to strictly comply with detection standards to ensure that each cable bundle can operate stably under high-speed and high-frequency working conditions.
We have been focusing on the design and customization of high-speed signal cable harnesses and ultra-fine coaxial cable harnesses for a long time, committed to providing stable and reliable high-speed interconnection solutions. If you have any related needs or would like to learn more, please contact: Manager Yin.
18913280527 (WeChat number)。
