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

The HP 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 HP 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.

[ Features ]

Low insertion loss and low SWR
Negligible leakage
0 to 120 dB in 10 dB steps
Standard BNC RF connectors
7-pin connector for programming

[ Specifications ]

Frequency Range:              dc to 1 GHz

Attenuation Range:            0 to 120 dB
                              10 dB steps

Maximum SWR (50-ohm nominal)	
1.2 to 0.25 GHz
1.3 to 0.5 GHz
1.5 to 1.0 GHz

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

Attenuation Accuracy:         
1000 Hz:                      ±0.3 dB 
dc to 500 MHz:                ±1.5 dB to 90 dB
dc to 1 GHz:                  ±3 dB to 120 dB 

Power Rating:                 0.5W average, 350W peak, 
	
Minimum Life:                 0.5 million cycles per section

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

Dimensions:                   70 mm W x 67 mm H x 152 mm D

Shipping Weight:              1.4 kg (3 lb)

[ Ordering ]

HP 355F       Programmable Step Attenuator, DC to 1 GHz, 0 to 120 dB, 10 dB steps
   Opt 001    Type-N (f)
   Opt 005    TNC (f)
   Opt 007    Transistor protection
   Opt 910    Extra operating and service manual(s)

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

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[ Assistance ]

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[ 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