©
National Instruments Corporation
4-1
4
Signal Connections
This chapter describes how to make input and output signal connections to
your device via the I/O connector.
The I/O connector for the devices has 68 pins that you can connect to
68-pin accessories with the SH6868 shielded cable or the R6868 ribbon
cable. You can connect your device to 50-pin signal accessories with the
SH6850 shielded cable or R6850 ribbon cable.
Caution
Connections that exceed any of the maximum ratings of input or output signals
on the devices can damage the device and the computer. Maximum input ratings for each
signal are given in the Protection column of Table 4-2. National Instruments is not liable
for any damages resulting from such signal connections.
I/O Connector
Figure 4-1 shows the pin assignments for the 68-pin I/O connector. Refer
to Appendix B,
Custom Cabling and Optional Connectors
assignments of the optional 50- and 68-pin connectors. A signal description
follows the figures.