National Instruments 780411-01 RF Signal Downconverter

The National Instruments 780411-01 (model name PXIe-5601) RF Signal Downconverter is an advanced module designed for high performance RF analysis. It converts RF frequencies ranging from 10 MHz to 6.6 GHz to lower intermediate frequencies (IF) for effective digitization. This downconverter integrates seamlessly with modular digitizers that facilitate comprehensive RF analysis in various applications. The model offers fine tuned frequency resolution across its operating range with resolutions as precise as <1 Hz for frequencies below 1.3 GHz, <2 Hz for frequencies between 1.3 GHz and 3.1 GHz and <4 Hz for frequencies up to 6.6 GHz.

This downconverter is designed for precision and stability and features a highly stable timebase with an accuracy of ±50 ppb. The device includes input related spur and LO leakage management along with typical LO leakage levels of <-60 dBm for frequencies below 3 GHz and <-55 dBm for frequencies up to 6.6 GHz. These features collectively contribute to minimizing signal distortion and enhancing measurement accuracy. The model weighs 454 g and has physical dimensions of 21.6 cm × 2.0 cm × 13.0 cm.

The 780411-01 module is equipped with a wide instantaneous bandwidth that supports greater than 50 MHz bandwidth for frequencies ranging from 330 MHz to 6.6 GHz. The module also features exceptional spectral purity with phase noise performance as low as -111 dBc/Hz at 100 MHz which is crucial for accurate signal analysis in applications requiring high dynamic range. It provides robust IF rejection capabilities that minimize interference from unwanted signals and ensure clear signal processing.

This NI 780411-01 unit supports both AC and DC coupling along with SMA female connectors for RF IN, IF OUT, LO IN and LO OUT ports that ensure flexibility in a wide range of RF testing setups. The module’s design accommodates high input power levels along with a maximum safe continuous RF power level of +30 dBm when RF attenuation is enabled. This downconverter adheres to strict safety and electromagnetic compatibility standards that include IEC 61010-1 and EN 61326-1. It operates efficiently within a temperature range of 0 °C to 55 °C and can withstand storage conditions from - 40 °C to 71 °C.