Question What Types of Cables are Susceptible to EMI?

[Crag_Hack]

Hi I have a quick question - what types of cables are susceptible to electromagnetic interference? All the cables I could dream up include:

HDMI/Displayport
3.5mm mini jack audio cables
Speaker Wire
Ethernet (stp vs utp)
Phone
USB
Coaxial
Digital Coaxial
Digital Optical (obviously not)
Component Video and RCA/Composite kinda non-existent nowadays

Thanks!

 

[ex_bubblehead]

Under the proper conditions ALL of them.

 

[USAFRet]

what types of cables are susceptible to electromagnetic interference?

Anything except fiber optic.

 

[ex_bubblehead]

Anything except fiber optic.

Technically speaking the cable isn't but the transducers at either end could be.

 

[USAFRet]

Technically speaking the cable isn't but the transducers at either end could be.

Right.

 

[Crag_Hack]

Thanks guys. I forgot to mention I was specifically wondering about EMI from power cables in close proximity to the mentioned cables in cable management setups. Same thing right? Does the EMI just interfere with the signal and therefore decrease its quality and max length? Does it have more of an impact on analog signals than digital signals?

 

[kanewolf]

Thanks guys. I forgot to mention I was specifically wondering about EMI from power cables in close proximity to the mentioned cables in cable management setups. Same thing right? Does the EMI just interfere with the signal and therefore decrease its quality and max length? Does it have more of an impact on analog signals than digital signals?

Power cables are low frequency compared to data cables. So other low frequency analog cables are the most susceptible. Audio cables for example.
I have worked in MANY data centers with megawatts of power in use. Ethernet cabling has never been an issue near power. Why? The pairs are twisted and the signaling is designed to be resistant to EMI. Cheap CCA cable, too thin cable and bad terminations are what cause ethernet problems. Not EMI interference, in my experience.

 

[Crag_Hack]

@ex_bubblehead @USAFRet You guys got any info to chime in with?