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© National Instruments Corporation 2-1 NI PXI-4224 User Manual
2
Connecting Signals
This chapter provides details about the front signal connector of the
NI PXI-4224 and how to connect signals to the NI PXI-4224.
Connecting Signals to the NI PXI-4224
After you have verified that the NI PXI-4224 is installed correctly and
self-tested the device, refer to the following sections to connect signals to
the device.
Caution Refer to the Read Me First: Safety and Radio-Frequency Interference document
before removing equipment covers, or connecting or disconnecting any signal wires.
Front Signal Connector
The NI PXI-4224 connection interface consists of a 25-pin D-SUB
connector and one SMB connector. You can program SMB connector
as a PFI 0 line or for external calibration. Table 2-1 shows the signal
assignments of the D-SUB connector for the NI PXI-4224. Figure 2-1
shows the front label, with each set of screw terminals labeled according
to the corresponding differential input signal for the NI PXI-4224.
To connect a signal to the NI PXI-4224, use a TB-2725 terminal block
designed specifically for the NI-PXI-4224, or use a 25-pin D-SUB to build
a connector to suit your application. Refer to the TB-2725 Terminal Block
Installation Guide if you are using the TB-2725 terminal block. Use
Table 2-1 to make the signal connections if you are constructing a
connector using a 25-pin D-SUB connector.
Connect a timing or triggering signal to the PFI 0/CAL SMB connector
using a cable with an SMB signal connector.