Keysight 355D Step Attenuator
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Keysight 355D is a precision DC to 1 GHz manual step attenuator providing 10 dB steps from 0 to 120 dB with low insertion loss and excellent repeatability.
Product details
| Model | 355D |
| Manufacturer | Keysight |
| Category | Attenuators |
| Availability | Made to order |
Description
Overview
The Keysight 355D is a precision manual step attenuator operating from DC to 1 GHz, providing step attenuation in 10 dB increments from 0 to 120 dB. Cam-actuated microswitches keep lead lengths short and minimize stray capacitances and inductances, reducing phase shift. The compact, rugged design features rigid component positioning and comprehensive shielding to prevent stray signal pickup and leakage. The 355D can be cascaded with the 355C to achieve 1 dB resolution across 0 to 132 dB. Either terminal may serve as input or output.
Key Features
- Frequency range: DC to 1 GHz
- Attenuation range: 0 to 120 dB in 10 dB steps
- Insertion loss at 0 dB: 0.2 dB + 2.3 dB/GHz
- Maximum SWR: 1.2 (DC to 250 MHz), 1.3 (to 500 MHz), 1.5 (to 1 GHz)
- Repeatability: 0.03 dB maximum over 0.5 million cycles per section
- Maximum RF input power: 0.5 W average, 350 W peak
- Connector options: BNC female, optional Type-N and TNC female
- Bidirectional operation: either terminal configurable as input or output
Applications
- RF and microwave test equipment
- Signal attenuation and level control
- Network analyzer systems
- Impedance matching and measurement
Specifications
| 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 | 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 and TNC female |
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Keysight 355D Step Attenuator
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