National Instruments Interface Device NI PCI-8254R - Manual (Page 7)

© National Instruments Corporation 7 NI PCI-8254R Quick Start Guide
Caution Do not connect the NI 8254R isolated power to a source less than 5 VDC or
greater than 30 VDC. Doing so could damage the NI 8254R device.
To connect power for the isolated outputs to the NI 8254R, refer to
Figures 2 through 6 while completing the following steps:
1. If you are using the NI desktop power supply, remove the 4-position
power connector connected to the power supply, shown in Figure 2.
a. Reconnect the wire that was connected to the V position on the
4-position power connector to the V position on the 2-position
isolated outputs power connector, shown in Figure 3.
b. Reconnect the wire that was connected to the C position on the
4-position power connector to the C position on the 2-position
isolated outputs power connector, shown in Figure 3.
Figure 2. Removing the 4-Position Power Connector from the Power Supply
Figure 3. Connecting the 2-Position Power Connector to the Power Supply
2. Plug the 2-position isolated outputs power connector from the power
supply into the power receptacle on the NI 8254R.
1 4-Position Power Connector
2 V Position
3 C Position
4 Power Supply Wire and Optional Ferrule
1 2-Position Isolated Outputs Power Connector
2 C Position
3 V Position
4 Power Supply Wire and Optional Ferrule
2
3
4 1
2
3
4 1