Adding a Jumper to an Input

When measuring a 4-20mA current signal or a voltage signal, such as a thermocouple, a jumper must be placed on the corresponding two or three-position header.  For example, Input 1 would need to have a jumper placed between the pins labeled “I1” before connecting a 4-20mA signal.  Failure to add the jumper will result in damage to the circuit board.  The jumper may already be present at each of the three headers, but unless it is attached across both pins (not just one) it will not be connected.