© National Instruments Corporation
3-1
ER-8/16 User Manual
Chapter 3
Signal Connections
This chapter describes the signal connections, channel connections, and digital interface to the
ER-8/16.
Front Connectors
This section describes the signal connections to the ER-8/16 via the I/O connectors for the digital
interface.
Warning: Connections that exceed any of the maximum ratings of the input signals on the
ER-8/16 can damage the ER-8/16, your computer, and the DAQ device.
Maximum input ratings for each signal are given in Appendix A, Specifications.
National Instruments is
NOT
liable for any damages resulting from signal
connections that exceed any of these ratings.
Turn off signal sources before connecting or disconnecting any additional signal.
DO NOT
attempt to connect your ER-8/16 to any connector for which it is not
designed. Incorrect connection can damage your ER-8/16 or the host computer.
National Instruments is
NOT
liable for any damages resulting from incorrect
connections.
The front end of the ER-8/16 has two 50-pin connectors. The top connector, DIO-32, is for
interfacing to DIO-32 boards, and the bottom connector, DIO-24, is for interfacing to DIO-24
devices.
Warning: Use only one connector, either the DIO-24 or the DIO-32 connector.
DO NOT
connect cables to both connectors.
Connecting the cable to the wrong connector can damage the ER-8/16 or your
DAQ device. National Instruments is
NOT
liable for any damages resulting from
such connections.
Using DIO-24 Devices
If you are using a National Instruments DIO-24 device to control the ER-8/16, connect the cable
to the DIO-24 connector.