Agilent/Keysight 33320A

The Agilent/Keysight 33320A is an electromechanical RF switch engineered for precision signal routing across DC to 26.5 GHz. Built around miniature thin-film attenuation cards with tantalum resistive film on sapphire substrates, it delivers exceptional repeatability and low insertion loss for automated test systems and communication applications.

– Technical Specifications

Frequency Range: DC to 26.5 GHz

Attenuation Accuracy (Typical):
• ±2% of dB reading to 18 GHz
• +4% of dB reading to 26.5 GHz

Step Accuracy (Typical):
• Better than ±1 dB for 10-dB steps to 18 GHz
• Better than ±2 dB for 10-dB steps to 26.5 GHz
• ±0.2 dB for 1-dB steps

Return Loss / SWR: Low SWR achieved through precision thin-film circuitry

– Key Features

Construction: Three or four cascaded attenuation sections with truly distributed circuits—no stray reactances. The precision thin-film attenuation card architecture eliminates parasitic effects critical at microwave frequencies.

Connector Type: 3.5 mm

Form Factor: Manual versions occupy less than 1.5 square inches of panel area. Programmable models are only slightly larger, enabling flexible OEM integration.

Control Options:
• Manual versions with indicator dial for attenuation selection
• Programmable versions for automated test environments

Environmental Performance: Extensively tested for temperature, shock, vibration, and humidity cycling, demonstrating high reliability across demanding operational profiles.

– Typical Applications

Signal routing in automated test systems, communication setups, and laboratory environments where precise attenuation control and repeatable performance are essential.

– Compatibility & Integration

Available in both manual and programmable configurations. Programmable models integrate directly into OEM systems and automated test infrastructures requiring remote or software-driven attenuation control.