The Keysight (Agilent/HP) 8493B is a precision coaxial fixed attenuator providing flat frequency response, low SWR, and accurate attenuation over a broad DC to 18 GHz frequency range. It features standard SMA male and female connectors, 2 W average power handling, and is available in 3, 6, 10, 20, and 30 dB nominal attenuation variants. The unit is swept-frequency tested and features calibration points printed directly on its nameplate.
Specifications
Electrical Specifications
| Parameter | Value |
|---|---|
| Frequency Range | DC to 18 GHz |
| Nominal Impedance | 50 Ω |
| Nominal Attenuation | 3, 6, 10, 20, or 30 dB (option dependent) |
| Attenuation Accuracy (3, 6, 10, 20 dB) | ±0.3 dB (DC to 12.4 GHz), ±0.5 dB (12.4 to 18 GHz) |
| Attenuation Accuracy (30 dB) | ±0.6 dB (DC to 12.4 GHz), ±1.0 dB (12.4 to 18 GHz) |
| VSWR (DC to 8 GHz) | 1.15:1 maximum |
| VSWR (8 GHz to 12.4 GHz) | 1.25:1 maximum |
| VSWR (12.4 GHz to 18 GHz) | 1.35:1 maximum |
| Maximum Average Power | 2 W |
| Maximum Peak Power | 100 W |
Mechanical Specifications
| Parameter | Value |
|---|---|
| Connector Type 1 | SMA |
| Connector Gender 1 | Male |
| Connector Type 2 | SMA |
| Connector Gender 2 | Female |
General Specifications
| Parameter | Value |
|---|---|
| Testing | Swept-frequency tested across specified band |
Technology
Coaxial
Applications
RF & Microwave Test