Keysight Agilent HP 355D

Keysight Agilent HP 355D


The Keysight Agilent HP 355D is one of our refurbished Manual Step Attenuators.

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Keysight Agilent HP 355D Features:

  • Frequency Range: dc to 1 GHz
  • Attenuation Range: 0 to 120 dB, 10 dB steps
  • Insertion Loss at 0 dB: 0.2 dB + 2.3 dB.GHz
  • Maximum SWR: 1.2 to 250 MHz, 1.3 to 500 MHz, 1.5 to 1 GHz
  • Repeatability Life: 0.03 dB maximum, 0.5 million cycles per section
  • Maximum RF Input Power: 0.5 W (average), 350 W (peak)
  • Connector Type: BNC female, optional Type-N female and TNC female

Attenuator sections are inserted and removed by cam-actuated microswitches which keep lead lengths short. This design minimizes stray capacitances and inductances, and keeps phase shift to a minimum. The Keysight Agilent HP 355D is a compact and rugged unit in which the component parts are rigidly positioned and well-shielded so that neither stray pickup nor signal leakage is a problem. It may be connected with the Keysight Agilent HP  355C in series to provide precision attenuation in 1 dB steps from 0 to 132 dB. Either terminal may be connected as input or output.