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PXI-7842
PXI-7842, Virtex-5 LX50 FPGA, PXI Multifunction Reconfigurable I/O Module
Actual item may vary if no part number is provided on quote request.
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March 2025
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January 2025
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May 2025
Gregg Flecki**** Verified Buyer
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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 PXI-7842 PXI Multifunction Reconfigurable I/O Module
The PXI-7842 (Part number: 780338-01) is a PXI Multifunction Reconfigurable I/O Module from National Instruments. This device features data acquisition with onboard processing and an onboard FPGA. The onboard FPGA is a Virtex-5 LX50 with 28,800 flip-flops, 48 DSP48 slices (multipliers), and 1,728 kbits of embedded block RAM. This device allows full user-programmable control of trigger and timer channels and can stream data at high speeds via DMA channels. The PXI-7842 is commonly used in digital communication protocols and applications requiring custom control logic.
The PXI-7842 has eight AI channels, which support Differential (DIFF), Referenced Single-Ended (RSE), and Non-Referenced Single-Ended (NRSE) input modes. The AI channels have an input impedance of 10 GΩ (powered on) or 4.0 kΩ (powered off), with ±42 V (powered on) and ±35 V (powered off) overvoltage protection. The ADC type is Successive Approximation (SAR) with a resolution of 16 bits and a maximum sampling rate of 200 kS/s.
The PXI-7842 also includes 8 single-ended AO channels that are DC-coupled with a ±10 V range and an output impedance of 0.5 Ω. The maximum AO update rate is 1 MS/s. Additionally, the module incorporates 96 DIO channels, supporting 3.3 V and 5 V TTL logic with an input protection range of –20 V to +20 V. This module includes three 68-pin Female High-Density VHDCI connectors, is compatible with the NI-RIO driver, and supports Windows XP/2000 and LabVIEW RT. The timebase options include 40, 80, 120, 160, or 200 MHz, with an ability to phase-lock to the PXI 10 MHz reference clock for synchronization.
PXI-7842 Mature Status has been announced by National Instruments, but the module will still be available for purchase and repairs by Apex Waves.
| Model | PXI-7842 |
|---|---|
| Manufacturer | National Instruments |
| Series | R Series |
| Part Number | 780338-01 |
| Type | PXI Multifunction Reconfigurable I/O Module |
| FPGA Type | Virtex-5 LX50 |
| Analog Inputs | 8 (16 Bits, 200 kS/s) |
| Analog Outputs | 8 (16 Bits, 1 MS/s) |
| Number of Flip-flops | 28,800 |
| Number of 25 × 18 Multipliers | 48 |
| Embedded Block RAM | 1,728 kbits |
| Digital I/O | 96 |
| Number of DMA Channels | 3 |
| Timebase | 40, 80, 120, 160, or 200 MHz |
| I/O Connectors | 3 68-pin Female High-Density VHDCI |
| Power Requirements | +3.3 VDC, +5 VDC, 12 VDC, -12 VDC - 604 mA,136 mA, 0.5 A, 0.25 A |
| Dimensions | 6.3 in. by 3.9 in. |
| Weight | 0.33 lb. |
| Software Driver | NI-RIO |
| PXI-7842 Manual | User Manual and Maintenance Manual Available for Download |
| Price | Contact a sales representative for a quote. |
Associated part numbers for PXI-7842:
National Instruments PXI-7842 Frequently Asked Questions
Question: Does the PXI-7842 have a user-programmable FPGA?
Answer: The PXI-7842 has a user-programmable FPGA for high performance onboard processing.
Question: Does the NI PXI 7842 have a dedicated A/D converter?
Answer: The NI PXI-7842 uses a shared successive approximation (SAR) A/D converter for analog inputs, rather than a dedicated converter per channel.
Question: What do I do if I have a Veristand timeout error with the PXI 7842?
Answer: If you get a timeout error with the Veristand and the PXI 7842, try to increase your gateway timeout setting with your remote chassis or if you’re not using a remote chassis, try moving your card into slots 2-9.
PXI-7842 PDF Manuals
GETTING-STARTED-WITH-R-SERIES-MULTIFUNCTION-RIO.PDF
NI-78XXR-PINOUT-LABELS-FOR-THE-SCB-68-NOTE-TO-USERS.PDF
NI-78XXR-PINOUT-LABELS-FOR-THE-SCB-68A-NOTE-TO-USERS.PDF
NI-R-SERIES-CALIBRATION-PROCEDURE.PDF
NI-R-SERIES-INTELLIGENT-DAQ-USER-MANUAL.PDF
NI-R-SERIES-MULTIFUNCTION-RIO-SPECIFICATIONS.PDF
NI-R-SERIES-MULTIFUNCTION-RIO-USER-MANUAL.PDF
PXI-7841R-42R-51R-52R-LETTER-OF-VOLATILITY.PDF
PXI-7842 Diagrams
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