On Sat, Oct 23, 2021 at 10:05 AM, Eric Garner wrote:
The major purpose for using these is to protect an instrument's input and output from mechanical damage during storage and transit.
I won't lie... I have seen damaged bnc connectors on instruments (can't recall seeing one on coax)
Usually though, it was from someone (telecommunications techs et. al.) trying to force a TNC onto a BNC.
I can't see how one of these plasticy things could stop the kind of impact force it takes to even dimple a BNC... especially a quality one.
I can't see it at all on an N connector.
I used to see the metal shorting/protecting caps on BNC sometimes (usually they got lost as soon as the instrument was bought.)
I've only recently seen the plastic caps.
I'd speculate (but, don't know) that these plastic caps are a cosmetic thing... to "brighten up a rig for better sales potential... kind of like waxing apples.