NI PXIE-5601 is an RF signal downconverter module for the PXI Express platform. NI documentation identifies it specifically as an RF Signal Downconverter, and in PXIe-5663 system documentation it is referred to as the NI 5601 RF downconverter module rather than a complete standalone analyzer. This distinction is important for catalog accuracy because the PXIe-5601 is the downconversion stage within a modular RF measurement system, not the full analyzer by itself.
The module provides a 10 MHz to 6.6 GHz frequency range and uses SMA female, 50 Ω, AC-coupled connections for RF IN and IF OUT. NI specifies nominal RF input attenuation from 0 dB to 50 dB in 1 dB steps. Maximum safe continuous RF power at RF IN is +30 dBm with RF attenuation enabled at 8 dB or greater, or +20 dBm with attenuation disabled at 0 dB. IF center frequency options are 53 MHz, 187.5 MHz, or Bypass, with the bypass path noted for 10 MHz to 300 MHz.
For local oscillator routing, the PXIe-5601 includes LO IN and LO OUT connectors, both SMA female, 50 Ω, and AC coupled. NI lists nominal LO frequency from 173 MHz to 6.4125 GHz and nominal LO amplitude of 0 dBm. In the PXIe-5663 documentation, NI states that IF OUT connects to the IF IN on the NI 5622 IF digitizer and LO IN connects to the RF OUT on the NI 5652 LO source, illustrating the module’s role in a multi-module RF system.
