How to avoid the danger of accumulating electric charge in 1.85mm cable assembly

To prevent the accumulated charge of the 1.85mm cable assembly from burning out the test equipment, it must be discharged before connecting the test equipment.

The method of discharge is very simple: connect a short circuit (such as the Short calibration piece of VNA) to the 1.85mm cable assembly, so as to ensure that the inner and outer conductors are connected, and place it on the laboratory ground terminal to complete the discharge! It is worth mentioning that to prevent such a situation, the 1.85mm coaxial cable was subjected to a dielectric withstand voltage test after production, and a relatively long 1.85mm cable assembly was made, but no further tests were carried out after that.

In this case, the inner conductor of the 1.85mm cable assembly is also very likely to carry a large amount of charge. Before use, it is strongly recommended to discharge this 1.85mm cable assembly to prevent harm to other electronic devices or equipment.