Chapter 3
I/O Information
©
National Instruments
3-9
NI PXI-8119 User Manual
Universal Serial Bus
Figure 3-6 shows the location and pinouts for the Universal Serial Bus
(USB) connector on the NI PXI-8119. Each controller has six USB ports
on the front panel. Table 3-7 lists and describes the USB connector signals.
Figure 3-6.
USB Connector Location and Pinout
Caution
Install a noise-suppression ferrite (included in your shipping kit) around all
attached external USB cables to ensure that your device meets all EMC standards
applicable to your country. Install the ferrite so that each USB cable loops through the
ferrite as shown in Figure 3-7. The ferrite should be installed so that it is approximately
50–75 mm (2–3 in.) from the end of the cable that plugs into the controller. The ferrite
should accommodate from 2–4 USB cables depending on cable diameter.
Table 3-7.
USB Connector Signals
Pin
Signal Name
Signal Description
1
VCC
Cable Power (+5 V)
2
–Data
USB Data –
3
+Data
USB Data +
4
GND
Ground
USB
4
1
NI PXI-8119
Embedded Controller
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