Pinout for Connection to an ER4 Rack
Rev A - D Signal Distribution Board (only has one serial connector), located at J15 next to the module 2 ULP header
- Pin 1 - TX
- Pin 2 - RX
- Pin 3 - Ground
Rev E or higher (has two serial connectors), located at J16 and J17 between the module 1A and module 2 ULP headers
- Pin 1 - Ground
- Pin 2 - RX
- Pin 3 - TX
