Universal Serial Bus - National Instruments PXI-8101 User Manual

Universal Serial Bus

Note 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.
© National Instruments Corporation
Figure 3-6 shows the location and pinouts for the Universal Serial Bus
(USB) connectors on the NI PXI-8101/8102. Table 3-7 lists and describes
the USB connector signals.
Embedded Controller
Figure 3-6. USB Connector Location and Pinout
Pin Signal Name
1 VCC
2 D–
3 D+
4 GND
NI PXI-8101
Table 3-7. USB Connector Signals
Cable Power (+5 V)
USB Data –
USB Data +
Ground
3-9
Chapter 3 I/O Information
4
USB
1
Signal Description
NI PXI-8101/8102 User Manual