Both up- and down-conversion functions are housed in a single-slot PXIe module. An independent local oscillator (LO) is available for each block. Optional LO input ports are provided to support measurements requiring extremely low phase noise performance.
The down-converter includes a bypass path to minimize cable swapping when the mixer is not required. The bypass path includes a user-selectable filter bank and low noise amplifier for signal conditioning purposes. For harmonic measurement applications, a bank of high pass filters (HPF) is available to reject the fundamental signal and provide better dynamic range. The down-converted signal is passed through 5GHz intermediate frequency (IF) filter for spurious rejection prior to output from the module.
Like its counterpart, the up-conversion path includes bypass capability and several signal conditioning options. Self calibration of the instrument is possible using the built-in loop back signal in the up-converter.