Hi Everyone,
I have a question regarding the grounding of shields. This is both practical for a build I'm thinking about, and theoretical (if there is any general theory to be gleaned here).
Below, I've attached a simple diagram of how the various ground points of the project are intended to be connected. However, in an effort to "overbuild" somewhat,* I have chosen to use shielded cable for the various front panel connections. There are not enough convenient ground pads on the main boards to connect the shields on that end (they are probably overkill and not completely necessary, and thus were not anticipated on the pcb), so my thought was to connect them all to a bus wire at the front panel instead end and run that off to ground. And yes, they will only be connected at that end. My question is this: as you can see, several of the other ground points "touch base" at the PSU, from which they are all connected to the bolt on the chassis. Does it make sense for me to also send the ground bus to that same point on the PSU, or directly to the chassis? Does it make a difference / is there a reason why, either way?
*The primary reason for the shielded wires is that my front panel layout is a little different and many of these cables will run near-ish to the AC lines of the power switch, and I'd like some extra insurance against that noise.
I have a question regarding the grounding of shields. This is both practical for a build I'm thinking about, and theoretical (if there is any general theory to be gleaned here).
Below, I've attached a simple diagram of how the various ground points of the project are intended to be connected. However, in an effort to "overbuild" somewhat,* I have chosen to use shielded cable for the various front panel connections. There are not enough convenient ground pads on the main boards to connect the shields on that end (they are probably overkill and not completely necessary, and thus were not anticipated on the pcb), so my thought was to connect them all to a bus wire at the front panel instead end and run that off to ground. And yes, they will only be connected at that end. My question is this: as you can see, several of the other ground points "touch base" at the PSU, from which they are all connected to the bolt on the chassis. Does it make sense for me to also send the ground bus to that same point on the PSU, or directly to the chassis? Does it make a difference / is there a reason why, either way?
*The primary reason for the shielded wires is that my front panel layout is a little different and many of these cables will run near-ish to the AC lines of the power switch, and I'd like some extra insurance against that noise.