Connectors; Ieee 1394B Connector; Atx Connector - National Instruments NI PCIe-8255R User Manual

Chapter 3 Signal Connections
Peripheral
IEEE 1394
Camera Power
Digital Input/Output

Connectors

IEEE 1394b Connector

You can use a 6-pin to 9-pin cable or adapter with IEEE 1394a cameras to connect
Note
the cameras to the IEEE 1394b ports.

ATX Connector

NI PCIe-8255R User Manual
Table 3-1 summarizes the functions of the connectors on the NI 8255R.
Table 3-1. NI 8255R Connector Functions
Connector
9-pin IEEE 1394b bilingual
connector
4-pin ATX computer power
connector
44-pin female high-density
D-SUB connector
This section describes the connectors on the NI 8255R and includes pinouts
and signal descriptions.
The NI 8255R provides two direct-connect IEEE 1394b bilingual
connectors, which support IEEE 1394a and IEEE 1394b devices. The
connectors provide a reliable, high-frequency connection between the
NI 8255R device and up to two DCAM-compliant IEEE 1394 cameras.
To access the IEEE 1394b connectors on the NI 8255R device, use any
standard 9-pin IEEE 1394 cable.
The ATX connector on the NI 8255R allows the 1394 devices that are
connected to the NI 8255R to draw power directly from the computer
power supply, instead of the PCI Express bus. The PCI Express bus has a
stricter current draw allowance than the computer power supply. Connect
the NI 8255R device to the computer power supply by connecting an
unused ATX power connector from within the computer chassis to the
ATX connector on the NI 8255R. The green LED on the front panel of the
NI 8255R device will illuminate when the ATX connector is connected to
the computer power supply and the computer is on.
Power and data connection to
IEEE 1394 devices
Power from PC power supply to
IEEE 1394b connectors
External TTL I/O,
External isolated I/O,
Power for isolated outputs
3-2
Function
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