HP 355E Programmable Step Attenuator, DC to 1 GHz, 0 to 12 dB, 1 dB steps

The HP 355E programmable step attenuator provides precision step attenuation in 1 dB steps from 0 to 12 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 HP 355E 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 355F 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 .

[ Features ]

Low insertion loss and low SWR
Negligible leakage
0 to 12 dB in 1 dB steps
Standard BNC RF connectors
7-pin connector for programming

[ Specifications ]

Frequency Range:              dc to 1 GHz

Attenuation Range:            0 to 12 dB
                              1 dB steps

Maximum SWR (50-ohm nominal)	
1.2 to 250 mHz
1.3 to 500 mHz
1.5 to 1.0 GHz

Insertion Loss (0 dB setting)
                              0.11 dB + 1.39 dB/GHz

Attenuation Accuracy          
1000 Hz:                      ±0.1 dB                             
dc to 0.5 GHz:                ±0.25 dB 
dc to 1.0 GHz:                ±0.35 dB 

Power Rating:                 0.5 W average, 350W peak, 

Minimum Life:                 0.3 million cycles per section

Solenoid Voltage, Speed, and Power
                              15 V to -18 V, <65 ms, 3.0 W

Dimensions:                   70 mm W x 67 mm H x 152 mm D
                              (2.75 in x 2.6 in x 6 in)

Shipping Weight:              1.4 kg (3lb)

[ Ordering ]

HP 355E Programmable Step Attenuator, DC to 1 GHz, 0 to 12 dB, 1 dB steps Opt 001 Type-N (f) Connector Opt 005 TNC (f) connector Opt 007 Protect circuit Opt 910 Extra operating and service manual(s) Opt UKS Certificate of calibration

DC - 1 GHz Programmable Attenuators Models 355E and 355F, Technical Data

If you do not have the Adobe Acrobat Reader necessary for viewing this documentation, download your Free Acrobat Reader now.

[ Assistance ]

To help you make the right instrument choices

Local Sales Office

[ Related ]

Related HP 355 DC - 1 GHz Attenuator Family product datasheets:

HP 355C Manual Step Attenuator, DC to 1000 MHz, 0 to 12 dB, 1 dB steps

HP 355D Manual Step Attenuator, DC to 1000 MHz, 0 to 120 dB, 10 dB steps

HP 355E Programmable Step Attenuator, DC to 1 GHz, 0 to 12 dB, 1 dB steps

HP 355F Programmable Step Attenuator, DC to 1 GHz, 0 to 120 dB, 10 dB steps

Related product families available online:

Coaxial Step Attenuators