NI Announces 11 New PXI RF Switches for Video and Communications Test

National Instruments (Nasdaq:NATI) has doubled its PXI RF switch offering for 50 and 75 ohm RF applications with the release of 11 new RF switches. The new modules include 4x1, terminated 4x1, dual 4x1 and 8x1 multiplexers as well as quad (4) SPDT and dual-terminated SPDT general-purpose configurations. With these new products, engineers have more choices to optimize their RF switch networks around price performance and improved signal integrity. The six new 2.5 GHz 75 ohm modules are the companys first switches for high-frequency video applications, such as set-top box testing. The five new 2.7 GHz 50 ohm modules add to the companys current RF switch offering of 10 modules for routing signals between DC and 26.5 GHz and are ideal for expanding the channel count of RF generators, such as the NI PXI-5671 2.7 GHz vector signal generator, or RF analyzers such as the NI PXI-5661 2.7 GHz vector signal analyzer.

All 11 modules offer extremely low insertion loss (less than 2.1 dB at specified bandwidth) and voltage-standing wave ratio (less than 1.75 at bandwidth) to minimize power loss, voltage attenuation and signal reflections. Alternative PXI RF switches available on the market have up to 3 dB of insertion loss and voltage-standing wave ratio greater than 1.8 at their bandwidth frequencies. The new modules also offer relay count tracking, a feature available only on National Instruments PXI modules. With this feature, engineers can keep track of relay closures on board the hardware to estimate the lifetime of individual relays on the module and avoid unexpected system downtime.

Engineers can program all of the new switches using the full-featured NI-SWITCH driver software for basic relay operations in common development environments such as the NI LabVIEW graphical development environment, LabWindows/CVI for ANSI C development and Microsoft Visual Basic/C++. For additional assistance in configuring, programming and managing high-channel-count switching systems, NI Switch Executive software offers an easy-to-use, intelligent switch management and visual routing environment. Once they have configured and programmed their switch networks, engineers can deploy them using NI TestStand, a ready-to-run test management environment and framework designed to simplify the automation of test and validation systems.

11 New RF Switch Modules for Communications and Video Test

50 Ohm Modules (2.7 GHz)75 Ohm Modules (2.5 GHz)
PXI-2545 Dual 4x1 PXI-2554 4x1
PXI-2546 Term 4x1 PXI-2555 Dual 4x1
PXI-2547 8x1 PXI-2556 Term 4x1
PXI-2548 Dual Term SPDT PXI-2557 8x1
PXI-2549 Quad SPDT PXI-2558 Dual Term SPDT
PXI-2559 Quad SPDT

About NI Modular Instruments

NI offers essential technologies for test, which combine high-performance hardware, flexible software and innovative timing and synchronization technology for test and design applications. NI modular instruments offer accurate, high-throughput measurements from DC to 6.6 GHz. The product family includes:

  • Digitizers/oscilloscopes (up to 24 bits, up to 2 GS/s, up to eight channels)
  • Signal generators (up to 16 bits, 200 MS/s)
  • Digital waveform generator/analyzers (up to 400 Mb/s)
  • RF signal generators and analyzers (up to 6.6 GHz)
  • Digital multimeters (up to 7½ digits, LCR)
  • Programmable power supplies (up to 20 W, 16 bits)
  • Dynamic signal analyzers (up to 24 bits, 500 kS/s)
  • Switching (multiplexers, matrices, general-purpose and RF)

About National Instruments

National Instruments ( is transforming the way engineers and scientists design, prototype and deploy systems for measurement, automation and embedded applications. NI empowers customers with off-the-shelf software such as NI LabVIEW and modular cost-effective hardware, and sells to a broad base of more than 25,000 different companies worldwide, with no one customer representing more than 3 percent of revenue and no one industry representing more than 10 percent of revenue. Headquartered in Austin, Texas, NI has more than 4,000 employees and direct operations in nearly 40 countries. For the past eight years, FORTUNE magazine has named NI one of the 100 best companies to work for in America.

Pricing and Contact Information

11 RF switch modules 11500 N Mopac Expwy, Austin, Texas 78759-3504

Priced from $1,099; 1,049;

Tel: 800-258-7022, Fax: 512-683-9300



CVI, LabVIEW, National Instruments, NI, and NI TestStand are trademarks of National Instruments. Other product and company names listed are trademarks or trade names of their respective companies.

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