Anonymous Verified Buyer
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July 2025
NI SwitchBlock Request for Availability
NI SwitchBlock, 16 Analog Bus Lines, 4 Slots, PXI Carrier and Relay Card
Rated 4.6/5 | 18 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 NI SwitchBlock
The NI SwitchBlock (Part Numbers: 781420-13, 781421-14, 781420-14, 781421-15, 781420-15, 781421-16, 781420-16, 781420-160, 781421-17, 781420-17, 781421-33, 781420-33, 781421-34, 781420-34, 782907-01, 150579-01, 150275-1R5, 150275-0R5, 150275-01, 781420-08, 781420-09, 150056-01, 781420-06, 781420-00, 782720-01, 782720-02, 781421-10, 781420-10, 781421-11, 781420-11, 781421-12, 781420-12, & 781421-13) from National Instruments is a modular PXI switching system designed for creating large, high-density switch matrices with exceptional flexibility and minimal wiring complexity. Users may effectively manage complicated switching demands within a PXI chassis with this highly adaptable hardware, which is perfect for applications requiring extensive signal routing, such automated test systems. Six 1-slot relay cards can be installed on a 4-slot PXI carrier, which is the basis of the NI SwitchBlock system. The carrier incorporates six virtual device engines to improve timing and synchronization capabilities, and it has a hybrid-compatible connector on the back of the second PXI slot.
Users can configure the NI SwitchBlock carrier with a variety of relay cards, each available in different matrix topologies. Relay cards can be used as separate matrices or connected using the carrier's backplane's analog bus to create a bigger matrix. To form a 4x344 1-wire, 0.25 A matrix, for instance, four NI 2815 relay cards are combined. Adding an NI 2833 relay card results in a 4x71 2-wire, 2 A matrix. Instead of connecting to the analog bus that the NI 2815 cards use, the NI 2833 relay card functions independently.
In order to facilitate signal routing between relay cards, the NI SwitchBlock carrier's backplane has sixteen analog bus lines. Relay cards of Type A configuration can access both the columns and the analog bus, but cards of Type B connect to the columns exclusively, hence reducing their influence on bus performance. A single PXI-chassis may accommodate up to 24 relay cards spread across four carriers, enabling matrices with more than 8800 crosspoints. The system can be further expanded by connecting more carriers using NI 2806 extension bridge cards.
Complete software support, including configuration, control, and maintenance tools, is also offered by National Instruments for the NI SwitchBlock. Significantly less time is spent developing large switch systems thanks to the Switch Executive route management software, which offers automatic signal routing and simple graphical configuration.
| Model Name | NI SwitchBlock |
|---|---|
| Part Number(s) | 781420-13, 781421-14, 781420-14, 781421-15, 781420-15, 781421-16, 781420-16, 781420-160, 781421-17, 781420-17, 781421-33, 781420-33, 781421-34, 781420-34, 782907-01, 150579-01, 150275-1R5, 150275-0R5, 150275-01, 781420-08, 781420-09, 150056-01, 781420-06, 781420-00, 782720-01, 782720-02, 781421-10, 781420-10, 781421-11, 781420-11, 781421-12, 781420-12, 781421-13 |
| Part Type | PXI Carrier and Relay Cards |
| Number of Slots | 4 slots per carrier |
| Relay Card Capacity | Up to six 1-slot relay cards |
| Analog Bus Lines | 16 analog bus lines per carrier |
| Matrix Configuration | Supports individual or combined matrix configurations |
| Timing and Sync | 6 virtual device engines for timing/synchronization |
| Expansion Capability | Supports up to 24 relay cards across 16 PXI slots |
| Software Integration | Compatible with Switch Executive for route management |
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