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July 2025
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USB-7845R, 48-Channel, Multifunction Reconfigurable I/O Device
Rated 4.6/5 | 12 ratings
Actual item may vary if no part number is provided on quote request.
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Andrew Gar**** Verified Buyer
" Amazing to work with and had my order within 1 week after purchasing with all NI certs and data that were needed. "
March 2025
Said Sai**** Verified Buyer
" Competent contact for highly specialized components. The support team is very knowledgeable. Many thanks for the help and the fast shipping! "
January 2025
Bob C**** Verified Buyer
" Jason was able to get our emergency situation taken care of quickly and professionally. "
May 2025
Gregg Flecki**** Verified Buyer
" Great service and great products. This is my 2nd time using Apex Waves, truly impressed. "
January 2025
Carol Zimme**** Verified Buyer
" Very responsive and helpful, competitive pricing. Good source! "
July 2025
Andrew Gar**** Verified Buyer
" Amazing to work with and had my order within 1 week after purchasing with all NI certs and data that were needed. "
March 2025
Said Sai**** Verified Buyer
" Competent contact for highly specialized components. The support team is very knowledgeable. Many thanks for the help and the fast shipping! "
January 2025
Bob C**** Verified Buyer
" Jason was able to get our emergency situation taken care of quickly and professionally. "
May 2025
Gregg Flecki**** Verified Buyer
" Great service and great products. This is my 2nd time using Apex Waves, truly impressed. "
January 2025
National Instruments USB-7845R Multifunction Reconfigurable I/O Device
The USB-7845R (part numbers: 783200-02 and 783200-01) is a Multifunction Reconfigurable I/O Device from National Instruments. The USB-7845R provides connectivity for 8 AI (analog input) channels, 8 AO (analog output) channels, and 48 DIO (digital input/output) channels. The difference between the two part numbers for the USB-7845R Reconfigurable I/O Device is that part number 783200-01 is an enclosed device, while part number 783200-02 is the standard version of the device that is not enclosed. There are three pins for every analog input channel of the National Instruments USB-7845R—AI+, AI-, and AIGND. Using these pins, the end-user can connect both differential voltage signals and single-ended signals. This device also features a pin referred to as AISENSE. This pin can be used to connect single-ended signals that are non-referenced or have a remote ground connection.
While connecting single-ended, referenced voltage signals to the NI USB-7845R, the end-user should connect the voltage GND signal to the AI GND. This is necessary to retain the common mode voltage in the defined range. The end-user can connect the sources of the grounded or floating differential signals with the Multifunction Reconfigurable I/O Device. The negative signal will be connected to AI- and the positive signal will be connected to AI+. To connect a grounded differential signal to the NI USB-7845R, the end-user must connect the reference signal to the AI Ground.
While connecting floating differential signals to the National Instruments USB-7845R, the end-user must connect the negative signal line to the AI- pin, the positive line to AI+, and add a 1 MΩ resistor between AI- and AIGND to maintain a reference. This module can sample data at a maximum rate of 500 kS/s aggregate across all AI channels, not per channel.
| Model | USB-7845R |
|---|---|
| Manufacturer | National Instruments |
| Part Numbers | 783200-01 (enclosed), 783200-02 (OEM) |
| Series | R Series |
| Type | Multifunction Reconfigurable I/O Device |
| Bus Connector | USB 2.0 |
| Analog Input Channels | 8 |
| Analog Output Channels | 8 |
| Bidirectional Digital Channels | 48 |
| Analog Input Resolution | 16 bits |
| Maximum Sample Rate | 500 kS/s (aggregate) |
| FPGA | Kintex-7 70T |
| Maximum Clock Rate | User-Configurable; typically up to several hundred MHz |
| Dimensions | 7.3 x 6.8 x 1.4 in. |
| Weight | 3 lbs. |
| USB-7845R Manual | User Manual and API Reference Available for Download |
| Price | Contact a sales representative for a quote. |
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