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National Instruments NI USB-6251 manual

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Table of contents for the manual

  • Page 1

    USER GUIDE NI USB-6221/6229/6251/6259 OEM This document provides dimensions, p inouts, and information about the connectors, switch, LEDs, and chassis ground of the NI USB-6221/6229/6251/62 59 OEM devices. Caution There are no product safety , electro magnetic compatib ility (EMC), or CE marking compliance claims made fo r the USB-6221/6229/6251 /6[...]

  • Page 2

    NI USB-6221/6229/6 251/6259 OEM User Guide 2 ni.com Dimensions Figure 2 shows the dimensions of the USB-6221/625 1 OEM device. Figure 2. USB-6221/6251 OEM Dimensions in Inches (Millimeters) 0.436 (11.07) 0.392 (9.96) 0.362 (9.19) 0.162 (4.11) 0.062 (1.57) 0.000 (0.00) 0.396 (10.06) 0.304 (7.72) 0.256 (6.50) 0.116 (2.95) 0.000 (0.00) 6.950 (176.53) [...]

  • Page 3

    © National Instruments Corporatio n 3 NI USB-6221/6229/6251 /6259 OEM User Guide Figure 3 shows the dimensions of the USB-6229/6259 OEM device. Figure 3. USB-6229/6259 OEM Dimensions in Inches (Millimeters) 0.436 (11.07) 0.392 (9.96) 0.362 (9.19) 0.162 (4.11) 0.062 (1.57) 0.000 (0.00) 0.396 (10.06) 0.304 (7.72) 0.256 (6.50) 0.116 (2.95) 0.000 (0.0[...]

  • Page 4

    NI USB-6221/6229/6 251/6259 OEM User Guide 4 ni.com I/O Connector Pinouts Figures 4 through 7 show the connect or pinouts for the USB-6221 OEM, USB-6229 OEM, USB-6251 OEM, and USB-6259 OEM devices. Refer to the M Series User Manual at ni.com/manuals for more information about USB-6221/622 9/6251/6259 signal s and how to connect them.[...]

  • Page 5

    © National Instruments Corporatio n 5 NI USB-6221/6229/6251 /6259 OEM User Guide Figure 4. USB-6221 OEM Connector Pinout AO 0 AO 1 AI GND AI GND AI GND AI 8 AI 1 AI GND AI 10 AI 3 AI GND AI 12 AI 5 AI GND AI 14 AI 7 AI GND AO GND AO GND NC AI 0 AI GND AI 9 AI 2 AO GND AI S EN S E AI GND AI 11 AI 4 AI GND AI 1 3 AI 6 AI GND AI 15 2 4 6 8 10 12 14 1[...]

  • Page 6

    NI USB-6221/6229/6 251/6259 OEM User Guide 6 ni.com Figure 5. USB-6229 OEM Connector Pinout AO 0 AO 1 AI GND AI GND AI GND AI 8 AI 1 AI GND AI 10 AI 3 AI GND AI 12 AI 5 AI GND AI 14 AI 7 AI GND AO GND AO GND NC AI 0 AI GND AI 9 AI 2 AO GND AI S EN S E AI GND AI 11 AI 4 AI GND AI 1 3 AI 6 AI GND AI 15 2 4 6 8 10 12 14 16 1 8 20 22 24 26 2 8 3 0 3 2 [...]

  • Page 7

    © National Instruments Corporatio n 7 NI USB-6221/6229/6251 /6259 OEM User Guide Figure 6. USB-6251 OEM Connector Pinout AO 0 AO 1 AI GND AI GND AI GND AI 8 AI 1 AI GND AI 10 AI 3 AI GND AI 12 AI 5 AI GND AI 14 AI 7 AI GND AO GND AO GND APFI 0 AI 0 AI GND AI 9 AI 2 AO GND AI S EN S E AI GND AI 11 AI 4 AI GND AI 1 3 AI 6 AI GND AI 15 2 4 6 8 10 12 [...]

  • Page 8

    NI USB-6221/6229/6 251/6259 OEM User Guide 8 ni.com Figure 7. USB-6259 OEM Connector Pinout AO 0 AO 1 AI GND AI GND AI GND AI 8 AI 1 AI GND AI 10 AI 3 AI GND AI 12 AI 5 AI GND AI 14 AI 7 AI GND AO GND AO GND APFI 0 AI 0 AI GND AI 9 AI 2 AO GND AI S EN S E AI GND AI 11 AI 4 AI GND AI 1 3 AI 6 AI GND AI 15 2 4 6 8 10 12 14 16 1 8 20 22 24 26 2 8 3 0 [...]

  • Page 9

    © National Instruments Corporatio n 9 NI USB-6221/6229/6251 /6259 OEM User Guide LEDs USB-6221/6229/6251/625 9 OEM devices have two LEDs that reflect the device state. The green READY LE D indicates whether the device is powered on and co nfigur ed as a USB device. The yellow ACTIVE LED indicates whether ther e is USB bus activity. Three connector[...]

  • Page 10

    NI USB-6221/6229/6251 /6259 OEM User Guide 10 ni.com Power Switch The power switch on the USB-6221/62 29/6251/6259 OEM device po wers the device on and off. Figure 10 shows the pins on the power switch. Figure 10. Power Switch (USB-6229/6259 OEM Shown) Pin 1 is connected to VDC th rough the fuse (ref erence designator XF1). The VDC is the voltage p[...]

  • Page 11

    © National Instruments Corporation 11 NI USB-6221/6229/6251 /6259 OEM User Guide Chassis Ground Chassis ground provides a connection betw een the enclosure and USB ground. D GND is connected to the chassis ground thro ugh an internal connection to hole A, shown in Figure 12. The chassis ground direct ly connects to USB shield ground. The USB-6221/[...]

  • Page 12

    National Instruments, NI, ni.com, and LabVIEW are tradem arks of National Instruments Corporation. Refer to t he Terms of Use section on ni.com/legal for more information a bout National Instruments trademarks. Other product and compan y names mentioned herein are trademarks or trade names of their respective companie s . For patents covering Natio[...]