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USER MANUAL
NI USB-7846R
R Series for USB Multifunction RIO with Kintex-7 160T FPGA
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This document provides compliance, pinout, connectivity, mounting, and power information
for the National Instruments USB-7846R.
Safety Guidelines
Caution
manual. Product misuse can result in a hazard. You can compromise the safety
protection built into the product if the product is damaged in any way. If the product
is damaged, return it to National Instruments for repair.
Electromagnetic Compatibility Guidelines
This product was tested and complies with the regulatory requirements and limits for
electromagnetic compatibility (EMC) as stated in the product specifications. These
requirements and limits are designed to provide reasonable protection against harmful
interference when the product is operated in its intended operational electromagnetic
environment.
This product is intended for use in residential, commercial, and industrial locations. However,
harmful interference may occur in some installations or when the product is connected to a
peripheral device or a test object. To minimize interference with radio and television reception
and prevent unacceptable performance degradation, install and use this product in strict
accordance with the instructions in the product documentation.
Furthermore, any changes or modifications to the product not expressly approved by National
Instruments could void your authority to operate it under your local regulatory rules.
Caution
shielded cables and accessories.
Deutsch
ni.com/manuals
Do not operate the NI USB-7846R in a manner not specified in this user
To ensure the specified EMC performance, operate this product only with
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Summary of Contents for NI 7846R
- Page 1 Safety Guidelines Caution Do not operate the NI USB-7846R in a manner not specified in this user manual. Product misuse can result in a hazard. You can compromise the safety protection built into the product if the product is damaged in any way. If the product is damaged, return it to National Instruments for repair.
- Page 2 NI USB-7846R Connecting the NI USB-7846R The NI USB-7846R provides connections for eight analog input (AI) channels, eight analog output (AO) channels, and forty-eight digital input/output (DIO) channels, as shown in Figure 2 | ni.com | NI USB-7846R User Manual...
- Page 3 TERMINAL 1 TERMINAL 34 TERMINAL 1 TERMINAL 68 TERMINAL 35 TERMINAL 35 TERMINAL 68 Connectivity Options Use the following connection accessories and cables to access the signals on the I/O connectors. NI USB-7846R User Manual | © National Instruments | 3...
- Page 4 Analog Input The NI USB-7846R provides connections for eight AI channels. Each channel has an AI+ pin, AI- pin, and AIGND pin to which you can connect both single-ended or differential voltage signals. Use the AISENSE pin to connect non-referenced single-ended signals.
- Page 5 You can connect grounded or floating differential signal sources to the NI USB-7846R. Connect the positive voltage signal to the AI+ and the negative voltage signal to AI-. To connect grounded differential signals to the NI USB-7846R, you must also connect the signal reference to AI GND.
- Page 6 AIGND Connection Accessory NI USB-7846R Analog Output The NI USB-7846R provides connections for eight analog output channels. Each channel has an AO pin and AOGND pin to which you can connect a load. Figure 7. Connecting a Load LOAD AOGND...
- Page 7 When the system powers on, the DIO channels are set as input low with pull-down resistors. To set another power-on state, you can configure the NI USB-7846R to load a VI when the system powers on. The VI can then set the DIO lines to any power-on state.
- Page 8 Separate NI USB-7846R signal lines from high-current or high-voltage lines. These lines can induce currents in or voltages on the NI USB-7846R signal lines if they run in parallel paths at a close distance. To reduce the magnetic coupling between lines, separate them by a reasonable distance if they run in parallel or run the lines at right angles to each other.
- Page 9 Figure 9. Wall or Panel Mounting the NI USB-7846R DIN Rail Mounting Complete the following steps to mount your NI USB-7846R. You can purchase a DIN rail mounting clip at with part number 781515-01. ni.com Fasten the DIN rail clip to the back of the backpanel wall mount using a #1 Phillips screwdriver and four machine screws.
- Page 10 Solid blue when the USB is ready ERROR Solid red for error cases USER1 Blue, user-defined USER2 Blue, user-defined USER3 Blue, user-defined The following figure shows the LEDs on the front panel of the NI USB-7846R. 10 | ni.com | NI USB-7846R User Manual...
- Page 11 Never connect the +5 V power terminals to analog or digital ground or any other voltage source on the NI USB-7846R or any other device. Doing so can damage the device and the computer. National Instruments is not liable for damage resulting from such a connection.
- Page 12 FPGA. The bitfile automatically starts running loaded to FPGA. whenever power is applied to the NI USB-7846R. To collect data, you must reconnect the NI USB-7846R to a host computer before powering off the device. Refer to the LabVIEW FPGA Module Help for more information about downloading an FPGA VI to the flash memory.
- Page 13 Worldwide Offices section of ni.com/niglobal to access the branch office websites, which provide up-to-date contact information, support phone numbers, email addresses, and current events. NI USB-7846R User Manual | © National Instruments | 13...
- Page 14 . You can find information about patents.txt ni.com/patents end-user license agreements (EULAs) and third-party legal notices in the readme file for your NI product. Refer to the Export Compliance Information at for the National Instruments global trade compliance policy and ni.com/legal/export-compliance...
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