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July 2025
781431-01
781431-01, 66.4 oz., SMA Female, 1.20 A, PXIe-5605 RF Signal Downconverter Module
Actual item may vary if no part number is provided on quote request.
✔ 2 Year Warranty Included
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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 781431-01 Signal Downconverter Module
National Instruments part number 781431-01 is an identifying part number for the PXIe-5605, an RF Signal Downconverter Module with SMA Female Connector and AC/DC Coupling. This Downconverter Module is known for its precision and exceptional performance, featuring a broad frequency range from 20 Hz to 14 GHz and automated testing capabilities. This module is an integral part of the PXIe-5665 RF Vector Signal Analyzer, working alongside the PXIe-5653 Analog Signal Generator and PXIe-5622 IF Digitizer.
The 781431-01 provides an impressive average noise level of -165 dBm/Hz at a 1 GHz carrier frequency and a phase noise of -129 dBc/Hz. Users can utilize NI-RFSA for automatic IF filter control, with an option for manual filter selection. This device supports three types of IF bandpass filters: 5 MHz, 300 kHz, and Through. The Through bandpass filter, at -6 dB, offers a nominal bandwidth of 80 MHz. With the pre-selector enabled, it functions at a typical bandwidth of 47 MHz. The 5 MHz filter provides a nominal bandwidth of 5 MHz at -3 dB, with an output IF frequency of 190 MHz.
The 300 kHz filter offers a nominal IF output frequency of 199 MHz at -3 dB. The National Instruments 781431-01 Downconverter Module features several connectors: one RF IN, one IF OUT, one LO1 IN, one LO2 IN, one LO3 IN, and three LO OUT connectors (LO1 OUT, LO2 OUT, LO3 OUT). This module includes an external DC block, compatible with an SMA DC block, which is utilized at the RF IN connector to protect the device when a DC signal is present.
| Model | 781431-01 |
|---|---|
| Model Range | PXIe-5605 |
| Part Type | RF Signal Downconverter Module |
| Connector | SMA female |
| Driver Software | NI-RFSA |
| Coupling | AC and DC |
| +3.3 VDC | 1.20 A (3.96 W) |
| Calibration Interval | 2 years |
| Dimension | 8.5 in. × 3.2 in. × 5.1 in. |
| Weight | 66.4 oz. |
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