The F1956EVBI is a fully populated evaluation board which allows the customer to easily evaluate the F1956 digital step attenuator. Attenuation may be set using either the F1956’s parallel control input or its serial control input. A dip switch on the evaluation board allows one to set the attenuation state without off-board connections to the control inputs.

The F1956EVS is a complete hardware and software solution that allows customers to digitally control the F1956EVBI with the USB output on a computer.  The kit includes the F1956EVBI board, as well as a USB Digital Control Board and interface cables. The software, guides , and instructional videos are available for download/viewing on this page.


  • F1956EVS (Evaluation Board)
    • SMA connectors for RF input and RF output
    • Power supply connected either through SMA connector or header pins
    • Attenuator settable with DIP switch, serial port interface (SPI) or parallel control interface
  • F1956EVS (Evaluation Solution)
    • Includes product evaluation board described above
    • Includes Digital Control Board and all necessary cables
    • Interfaces with the Digital Control Software – can be downloaded from this page

Product Options

Orderable Part ID Part Status Buy Sample
F1956EVBI Active
F1956EVS Active

Technical Documentation

Title Other Languages Type Format File Size Date
Datasheets & Errata
F1956 Datasheet REV02 Datasheet PDF 7.09 MB
Application Notes & White Papers
AN-896 RF Products EVS Digital Control Software Guide Application Note PDF 2.91 MB

Software & Tools

Title Other Languages Type Format File Size Date
RF Digital Control Software Installer Software Tool ZIP 169.81 MB