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Chapter 3 Signal Connections
NI PCI-8254R User Manual 3-2 ni.com
Table 3-1 summarizes the functions of the connectors on the NI 8254R.
Connectors
This section describes the connectors on the NI 8254R and includes pinouts
and signal descriptions for each connector.
2-Position Isolated Outputs Power Connector
The isolated outputs power connector on the NI 8254R accommodates one
power supply. The V terminal provides the isolated output circuitry (5 to
30 VDC) for the NI 8254R. The C terminal provides the common-mode
signal for the NI 8254R.
Figure 3-1 illustrates the isolated outputs power connector on the
NI 8254R.
Figure 3-1. NI 8254R Isolated Power Connector
Table 3-1. NI 8254R Connector Functions
Peripheral Connector Function
Isolated Output Power 2-position isolated outputs
power connector
Power for isolated outputs
IEEE 1394 6-pin IEEE 1394a connector Power and data connection to
IEEE 1394 cameras
Digital Input/Output 44-pin female high-density
D-SUB
External TTL I/O; External
isolated I/O
Camera Power 4-pin computer power Power from PC power supply
to IEEE 1394a connector
VC