STM Wiring

Here are a few different diagrams that show how the STM is currently wired up. I'd suggest looking at the powerpoint so that you can see things in higher resolution and move object around or even un-crop pictures to get a good idea of how things are placed.

Wiring is made using a very thin insulated wire (actually pacemaker wire use in heart monitors). You will need to either scrape or burn away the insulation (using a lighter). Then you will need to crimp connectors on the end. I use a method that involves sandwiching the exposed wire between two connector pieces, but play around with what works for you.

(Left: Original connection with insulation. Right: New connector with a front piece that can insert into a socket and a back piece that pushes the wire in for electrical contact, clamping it in place.)

A note on the Z electrode (inner piezo's inner electrode): The original socket for this somehow fell out. I used a worked around this issues by creating a connector piece with some copper braiding sticking out of the end. I made an extra, and it's in the STM wire box in case you need it later. (But you will still need to crimp that piece to some wire.)

A note on the bias electrode: This broke off during repairs and had to be reattached with silver paste (must be UHV safe). Stuff like this happens, and you can figure out from instructions online how to use the silver paste, I just thought I'd include a snap of the setup I used for curing. I used a solder iron to locally cure the epoxy, propping up the iron with clamps and clips.