Consultation on instrument cable core code issues
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Dear experts, what do P, R, T, and C represent in the cores of instrument cables?
I asked a senior and found out that p refers to ordinary batches of cables； PR is a shielded cable ； TR refers to the use of a special cable from the probe ； C refers to the cable used for the status lights.
Asking randomly. It has different meanings in different places. Search on Baidu by yourself.
This cannot be answered simply; as mentioned above, these letters have different meanings in various positions, and one can refer to the cable naming rules.