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PXI-2557
PXI-2557, 8-Channel, PXI RF Multiplexer Switch Module
Actual item may vary if no part number is provided on quote request.
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" Amazing to work with and had my order within 1 week after purchasing with all NI certs and data that were needed. "
March 2025
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January 2025
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" 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-2557 PXI RF Multiplexer Switch Module
The National Instruments PXI-2557 (Part Number: 778572-57) is a PXI RF Multiplexer Switch Module. The higher channel count of the PXI-2557 makes it perfect for test frameworks that require the switching of an expansive number of video RF signals, including switching several video tuners under test to a single channel on the RF analyzer.
Each switch causes some lessening and power loss on the signal routed. Insertion Loss is a measure of this lessening and power loss. An insertion loss graph for a switch module is analogous to a 3 dB graph (Bode plot) for a lowpass channel. To pick the best switch for a specific RF application, it is critical to know the insertion loss of the switch at the recurrence of the signal being routed.
The NI PXI-2557 Multiplexer Switch Module includes VSWR, which is the ratio of reflected to transmitted waves. At higher frequencies, signals take the form and shape of a wave when going through a transmission line. In RF applications, this happens when a signal is made to propagate between parts with unmatched impedances. Such mismatches happen in switch modules due to slight varieties in impedances of the connectors on the module, PCB traces, and the actual relay itself. Since VSWR is a measure of the energy of the reflected wave, it additionally adds to the measure of energy loss in the transmission line. VSWR is particularly imperative in RF applications where signal reflections can harm the source.
| Model | PXI-2557 |
|---|---|
| Manufacturer | National Instruments |
| Type | PXI RF Multiplexer Switch Module |
| Banks | 1 |
| Channels | 8 |
| Switch Bandwidth | 2.5 GHz |
| Dimensions | 8.5 x 0.8 x 5.1 in. |
| Weight | 8.0 oz. |
| PXI-2557 Manual | User Manual and Maintenance Manual Available for Download |
| Price | Contact a sales representative for a quote. |
Associated part numbers for PXI-2557:
National Instruments PXI-2557 Frequently Asked Questions
Question: How many I/O connectors does the NI PXI-2557 have?
Answer: The NI PXI-2557 has 9 mini-75 Ohm SMB jacks, gold-plated.
Question: What is the maximum relay operating time for the PXI-2557?
Answer: The maximum relay operating time for the PXI-2557 is 10.4 ms.
Question: What is the topology of the PXI-2557?
Answer: The PXI-2557 is an 8 x 1 Multiplexer.
Question: What is the maximum RF power of the PXI-2557 Multiplexer Switch Module?
Answer: The PXI-2557 Multiplexer Switch Module has a maximum RF power of 10 W.
PXI-2557 PDF Manuals
NI-PXI-2557-SPECIFICATIONS.PDF
PXI-2554-55-56-57-58-59-LETTER-OF-VOLATILITY.PDF
PXI-2557 Diagrams
Driver Downloads for PXI-2557
OS Compatibility: …
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