Neuralynx adaptor boards

Introduction

Neuralynx makes high-densiity electrophysiology recording equipment. We needed to produce two interface boards to the hardware:

• A jumper board to invert the differential input. All this board does is invert the plus and minus connections on 8 differential lines.
• Headers to make it easier to solder to the very small (0.05 inch) MillMax connectors used by Neuralynx to custom electrode cables. We built several versions

The boards

We used ExpressPCB software to design the boards and produce them. To open the dsign files, you will need to download software from ExpressPCB. The red and green images below are screen captures from the ExpressPCB design software showing all the connections, text, and header vias.

• The jumper board design file assumes that the user will mount a standard 0.1 inch, 2-row header socket on the back of the board (green side) and a 0.1 inch, two row header plug on the front.

  
  

• The headstage design file assumes that you will mount a Mill-max connector to interface to the Neuralynx and either a DIP plug or wires to go to the electrode array. The two adaptors to the left below each use two DIP plugs. The middle adaptors use a single DIP and bring out only 16 channels. The four to the right use direct wire connection. In the top image, red connections are on top of the board, green below.