The Keysight (Agilent/HP) 8493A is a precision coaxial fixed RF attenuator designed for reliable signal level reduction and impedance matching. Operating from DC to 12.4 GHz, it provides exceptionally flat frequency response and low SWR. The attenuator is available in multiple standard nominal attenuation values and features swept-frequency testing to guarantee performance across its entire band, with individual calibration data conveniently provided on a nameplate chart on each unit.
Specifications
Physical
| Parameter | Value |
|---|---|
| Dimensions (W×H×D) | 41 mm (Length) × 10 mm (Diameter) |
| Weight | 0.028 kg |
| Shipping Weight | 0.113 kg |
RF & Electrical Performance
| Parameter | Value |
|---|---|
| Frequency Range | DC to 12.4 GHz |
| Nominal Attenuation Options | 3 dB, 6 dB, 10 dB, 20 dB, 30 dB |
| Characteristic Impedance | 50 Ω |
| Maximum SWR (DC to 8 GHz) | 1.15 |
| Maximum SWR (8 to 12.4 GHz) | 1.25 |
| Maximum Average Input Power | 2 W |
| Maximum Peak Input Power | 100 W |
| Peak Power Pulse Width Limit | 10 µs |
| Attenuation Accuracy (3 dB Option, DC to 8 GHz) | ±0.3 dB |
| Attenuation Accuracy (3 dB Option, 8 to 12.4 GHz) | ±0.5 dB |
| Attenuation Accuracy (6 dB Option, DC to 8 GHz) | ±0.3 dB |
| Attenuation Accuracy (6 dB Option, 8 to 12.4 GHz) | ±0.5 dB |
| Attenuation Accuracy (10 dB Option, DC to 8 GHz) | ±0.3 dB |
| Attenuation Accuracy (10 dB Option, 8 to 12.4 GHz) | ±0.5 dB |
| Attenuation Accuracy (20 dB Option, DC to 8 GHz) | ±0.5 dB |
| Attenuation Accuracy (20 dB Option, 8 to 12.4 GHz) | ±0.7 dB |
| Attenuation Accuracy (30 dB Option, DC to 8 GHz) | ±0.7 dB |
| Attenuation Accuracy (30 dB Option, 8 to 12.4 GHz) | ±1.0 dB |
Mechanical & Material Specifications
| Parameter | Value |
|---|---|
| Input Connector Type | SMA male |
| Output Connector Type | SMA female |
| Connector Gender Configuration | One male, one female |
Compliance & Quality Standards
| Parameter | Value |
|---|---|
| Calibration Chart Location | On nameplate chart attached to each unit |
| Testing Standard | Swept-frequency tested |
Performance
| Parameter | Value |
|---|---|
| Temperature Coefficient | < 0.0001 dB/dB/°C |
| Power Coefficient | < 0.005 dB/dB/W |
Technology
Coaxial Thin-Film
Applications
RF & Microwave Signal Attenuation