jdbakker said:
I would like to have audio GND closer to the (single-ended) buses, to reduce return loop area.
On the power connector, I would prefer the outermost pins to be GND as well (even when you won't be hot plugging).
JDB.
I was expecting this whack on my neck. As how it is in the previous versions. I'll pull it down.
What do we think of the attached sketch? It is the rear view.
The blue lines are module width, the green are module centres. The edge connector centres are not shown. They are off-set to the module centers.
The area outlined in yellow is a bit exaggerated. I have to see the power connector situation here but in any case we will have the on/off switch for remotely controlling the power supply and the status LED for the rails here. There are two separate connectors for SS and tube powers respectively. I'll design the power supplies too.
The case will be 1" deeper than the standard 500 depth. The power and audio backplanes will sit in the front at the 500 depth. Of course nothing stops us from making the rack deeper.
There will be a full size backplane for the connectors which will mount onto the rear panel and connect onto the audio backplane through 26 WAY ribbons.
Unfortunately we are going to have to have a separate rear panel for SubD25 connections as there will be 6 of them, and there is simply not enough space, unless we add on another 1U.
For balancing the insert points (optional) I will incorporate a single row locking header on each slot on the audio backplane for little daughter boards. I would normally use THAT line drivers but the users can design their own if they wish to.
The provision for output TXs for the two main outputs were also discussed. This was Ian's request. Obviously we just have to see the available space which in return will dictate the size and shape of the transformer.
My preference would be to make the rack deeper to allow the transformer to be incorporated within the module design. With this in mind I will incorporate guide rails.
Edit: I see I missed a couple of mounting holes.