Measurement Specialties CIO-SSH16 user manual Signal Connection, Connector Diagram, Analog Inputs

3.0 SIGNAL CONNECTION

3.1 CONNECTOR DIAGRAM

The CIO-SSH16 inputs are screw terminals which will accept 12-22 AWG wire.

Each channel has a screw terminal for signal high, signal low and ground.

3.2 ANALOG INPUTS

Analog inputs to the CIO-SSH16 may be connected in two different configurations. In order of complexity, these are Floating Differential and Differential.

WARNING - PLEASE READ

Measure the voltage between the grounds at the signal source and the PC. Use a volt meter and place the red probe on the PC ground and the black probe on the signal ground. If there is more than 10 volts, do not connect the CIO-SSH16 to this signal source because you will not be able to make any reading. If the voltage is more than 30 volts, DO NOT connect this signal to the CIO-SSH16 because it will damage the board and possibly the computer.

3.3 FLOATING DIFFERENTIAL

A floating differential input is two wires from the signal source and a ground reference resistor (10 Kohms is a typical value) installed at the CIO-SSH16 input. The two signals from the signal source are Signal High (CH# HI) and Signal Low (CH# LO).

The reference resistor is connected between the CIO-SSH16 CH# LO and LLGND pins.

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