The Keysight (Agilent/HP) 8494H is a programmable step attenuator operating from DC to 18 GHz. It provides an attenuation range of 0 to 11 dB in 1 dB steps, featuring high repeatability of 0.03 dB maximum and a long operating life of over 5 million cycles per section. It is designed for applications requiring precise RF attenuation control and high reliability in automated test environments.
Specifications
General Specifications
| Parameter | Value |
|---|---|
| Attenuation Range | 0 to 11 dB |
| Step Size | 1 dB |
| Actuation Method | Programmable |
RF Specifications
| Parameter | Value |
|---|---|
| Frequency Range | DC to 18 GHz |
| Insertion Loss (0 dB position) | 0.6 dB + 0.09 dB/GHz |
| Maximum VSWR | 1.5 (DC to 8 GHz); 1.6 (8 to 12.4 GHz); 1.9 (12.4 to 18 GHz) |
| Attenuation Repeatability | 0.03 dB maximum (0.01 dB typical) |
| Maximum Average Input Power | 1 W |
| Maximum Peak Input Power | 100 W |
| Nominal Impedance | 50 Ω |
Actuator and Drive Characteristics
| Parameter | Value |
|---|---|
| Operating Life (cycles) | > 5 million cycles per section |
| Switching Speed / Settling Time | 20 ms maximum (including contact settling) |
Connectors and Interfaces
| Parameter | Value |
|---|---|
| RF Connector Type | Choice of Type-N (f), SMA (f), or APC-7 |
Power & Control
| Parameter | Value |
|---|---|
| Drive Voltage | 24 VDC nominal (5 VDC and 15 VDC by option) |
Technology
RF / Microwave
Applications
Test & Measurement