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National Instruments 782550-01 IF Conditioning Module

The National Instruments 782550-01 (PXIe-5694) IF Conditioning Module is a versatile component designed for signal conditioning in RF applications. This PXI Express module is equipped with advanced features that facilitate the downconversion and filtering of intermediate frequency (IF) signals. The front panel includes five SMA connectors and two LED indicators that enable easy integration and monitoring within various setups.

The 782550-01 module offers multiple signal paths, including bypass, downconversion disabled and downconversion-enabled modes. Each mode provides distinct input and output center frequencies that allow users to select the most appropriate configuration for their specific application. The bypass mode operates at a nominal center frequency of 187.5 MHz while the downconversion disabled mode operates at 193.6 MHz. The downconversion enabled mode shifts the output center frequency to 21.4 MHz and supports applications requiring lower frequency signal processing.

The NI 782550-01 module features several bandpass filters with varying bandwidths ranging from 30 kHz to 160 MHz. These filters are critical for refining the signal by eliminating unwanted frequencies and enhancing the overall signal quality. The module offers high rejection rates and low phase noise depending on the selected filter. The module's phase noise characteristics are particularly notable with values as low as -155 dBc/Hz at a 1 MHz offset. The 782550-01 IF conditioning unit also supports gain control with step gain adjustments that allow for fine-tuning of the signal amplitude. In bypass mode, the gain is typically around -1.5 dB while in downconversion modes it can be adjusted between 4.1 dB and 19.3 dB depending on the enabled state.

This flexibility in gain control combined with the module's high third order intercept points contributes to its excellent linearity.This conditioning module is designed to fit into a single PXI Express slot. The module has dimensions of 21.6 cm × 2.0 cm × 13.0 cm and a weight of 465 g. The module operates within a temperature range of 0 °C to 55 °C and is compliant with various safety and electromagnetic compatibility standards. The module's connectors and power requirements are designed for optimal performance with safe input voltage ranges and maximum power handling capabilities that protect the device during operation.