Agilent/ HP 355F Programmable Step Attenuator

The 355F programmable step attenuator provides precision step attenuation in 10 dB steps from 0 to 120 dB. 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 Agilent 355F 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 355E in series to provide precision attenuation in 1 dB steps from 0 to 132 dB. Either terminal may be connected as input or output. Remote programming with rapid switching is simple via a 7-pin connector.

• 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
• Programming connector: 7-pin