API Weinschel’s model 8321 Programmable Attenuator units represent a new streamlined approach in programmable attenuation for bench test and subsystem applications.

Standard 8321 series designs house and controls various Weinschel Programmable Attenuator models (3200-XE, 3400, 150T, and 4200 Series) via front panel controls, Ethernet, USB 2.0 and serial communications interfaces. A GPIB (IEEE-488) interface is also available as an option.

The 8321 are multi-channel configurations housed in 19 inch enclosures and can be configured for up to 12 attenuation channels. This series can be configured for front or rear and through (front to rear).


  • Provides a flexible, easy to program, low cost solution for your bench test/calibration setups and subsystem applications
  • Multi-channel attenuation paths (up to 12 channels)
  • Various configurations, up to 26.5 GHz: - dc to 3, 6, 18 and 26.5 GHz
  • Attenuation ranges up to 127 dB - solid-state (GaAs FET and PIN) - new MMIC switched digital attenuators - relay switched