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" Very responsive and helpful, competitive pricing. Good source! "
July 2025
USB-6343
USB-6343, Screw Terminal or BNC Connector Options, 48 DIO Channels, NI Multifunction I/O Device
Actual item may vary if no part number is provided on quote request.
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✔ NIST Calibration Available
Expert Insights for the USB-6343
"The USB-6343 is a robust multifunction USB data I/O device that features advanced timing and synchronization capabilities. With fully independent analog and digital timing engines, it is well suited for a variety of tasks, including complex data acquisition and testing automation. It features 32 analog inputs, 4 analog outputs, and 48 digital I/O. It can handle any number of data logging or testing control applications."
- Chris B.
LabVIEW Trained
In-House Technician
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
Expert Insights for the USB-6343
"The USB-6343 is a robust multifunction USB data I/O device that features advanced timing and synchronization capabilities. With fully independent analog and digital timing engines, it is well suited for a variety of tasks, including complex data acquisition and testing automation. It features 32 analog inputs, 4 analog outputs, and 48 digital I/O. It can handle any number of data logging or testing control applications."
- Chris B.
LabVIEW Trained
In-House Technician
National Instruments USB-6343 Multifunction I/O Device
The National Instruments USB-6343 (Part Numbers: 781439-01, 782253-01, 782252-01, and 150199C-01L) is a Multifunction I/O Device from the X Series. This device has 16 differential (or 32 single-ended) analog input channels, featuring 16 bits of ADC resolution and a maximum sample rate of 500 kS/s.
The analog input channels of the NI USB-6343 multifunction I/O device are safeguarded against damage from overvoltage with protection of ±25 V when the device is powered on. When powered off, it is still protected with ±15 V. These values apply to up to two analog input pins at a time. The USB-6343 from NI also features 4 analog output channels, which come equipped with 16 bits of DAC resolution. The flexible device offers simultaneous update rates, which differ depending on the number of output channels. The maximum update rate for one channel is 900 kS/s, two channels is 840 kS/s, three channels is 775 kS/s, and four channels is 719 kS/s. These rates offer high resolution performance for a wide range of applications.
The various part numbers for the NI USB-6343 differ depending on their connector type. Part number 781439-01 is equipped with screw terminal front connectors, while part number 782253-01 features BNC front connectors. In addition, 782252-01 is the descriptive part number for the board only kit of the multifunction I/O device. The X Series NI USB-6343 offers DC output coupling and monotonicity. The screw terminal I/O connector variation of the device features 128 screw terminals, while the BNC I/O connector version provides 30 BNCS and 60 screw terminals.
Designed only for use indoors, the NI USB-6343 I/O device should be operated in environments where the temperatures range from 0 °C to 45 °C. The device has a storage temperature range of -40 °C to 70 °C. The screw terminal variant of the USB-6343 has a weight of 1.445 kg (3 lb 3 oz) and dimensions measuring 26.4 cm × 17.3 cm × 3.6 cm (10.4 in. × 6.8 in. × 1.4 in.). In contrast, the BNC connector module weighs 1.803 kg (3 lb 15.6 oz) and is sized at 20.3 cm × 18.5 cm × 6.8 cm (8.0 in. × 7.3 in. × 2.7 in.).
| Model | USB-6343 |
|---|---|
| Manufacturer | National Instruments |
| Part Numbers | 781439-01, 782253-01, 782252-01, 150199C-01L |
| Type | Multifunction I/O Device |
| Analog Input Channels | 32 Single-Ended or 16 Differential |
| Analog Output Channels | 4 |
| Bidirectional Digital Channels | 48 |
| Analog Input Resolution | 16 Bits |
| Maximum Update Rate | 900 kS/s |
| Maximum Sample Rate | 500 kS/s |
| Counters/Timers | 4 |
| FIFO Buffer Size | 2047 Samples |
| Simultaneous Sampling? | No |
| Analog Input Absolute Accuracy | 2190 μV |
| Bus Connector | USB 2.0 |
| Dimensions | Screw Terminal: 10.4 × 6.8 × 1.4 in.BNC: 8.0 × 7.3 × 2.7 in. |
| Weight | Screw Terminal: 3 lb 3 oz.BNC: 3 lb 15.6 oz. |
| USB-6343 Manual | User Manual and Maintenance Manual Available for Download |
| Price | Request a Quote Today for Pricing Info! |
Associated part numbers for USB-6343:
National Instruments USB-6343 Frequently Asked Questions
Question: What is the difference between the part numbers for the NI USB-6343?
Answer: The differences is that part number 781439-01 has screw terminal front connectors, part number 782253-01 has BNC front connectors, and part number 782252-01 is the board only version of the USB-6343.
Question: How many bidirectional digital channels does the NI USB-6343 have?
Answer: The X Series DAQ has 48 bidirectional digital channels.
Question: How many I/O connectors does the device have?
Answer: The NI USB-6343 screw terminal version has 128 screw terminals, while the BNC version has 30 BNCs and 60 screw terminals.
Question: What are the power supply requirements for the Multifunction I/O Device?
Answer: The power supply requirements for the USB-6343 are 11 to 30 VDC, 30 W.
| Accessory Type | Model Name | Part Number |
|---|---|---|
| Cable | SHC68-68-EPM | 192061-01 (1 m) |
| 192061-02 (2 m) | ||
| 192061-05 (5 m) | ||
| 192061-0R5 (0.5 m) | ||
| RC68-68 | 187252-01 (1 m) | |
| 187252-0R25 (0.25 m) | ||
| 187252-0R5 (0.5 m) | ||
| Shielded Connector Block | SCB-68A | 782536-01 |
| Shielded BNC Connector | BNC-2110 | 777643-01 |
| Rack-Mountable Accessory | BNC-2090A (Rackmount) | 779556-01 |
| Terminal Block | TB-2706 | 779183-01 |
| Connector Block | TBX-68 | 777141-01 |
| CB-68LP (Vertical Mount) | 777145-01 | |
| CB-68LPR (Right Angle Mount) | 777145-02 |
USB-6343 PDF Manuals
DAQ-GETTING-STARTED-GUIDE-FOR-EXTERNALLY-POWERED-USB.PDF
DAQ-GETTING-STARTED-GUIDE-FOR-PCI-PCI-EXPRESS.PDF
DAQ-GETTING-STARTED-READ-ME-FIRST--NI-DAQMX-AND-DAQ-DEVICE-INSTALLATION-GUIDE.PDF
FERRITE-INSTALLATION-NOTE-TO-USERS.PDF
GUIDE-D_INITIATION-DAQ-POUR-LES-PC3A9RIPHC3A9RIQUES-USB-C3A0-ALIMENTATION-EXTERNE.PDF
GUIDE-D_INITIATION-DAQ-POUR-PCI-PCI-EXPRESS.PDF
LOCKING-LID-FOR-USB-SCREW-TERMINAL-DEVICES-USER-GUIDE.PDF
MULTIFUNCTION-IO-PRODUCT-FLYER.PDF
USB-6341-43-51-53-61-63-LETTER-OF-VOLATILITY.PDF
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