The Keysight W8486A (formerly Agilent) is a waveguide diode power sensor designed for precise average power measurements in the W-band frequency range from 75 GHz to 110 GHz. Featuring an exceptionally low SWR of 1.08 to minimize mismatch uncertainty, it covers a dynamic range from -30 dBm to +20 dBm. It is compatible with a wide array of legacy and modern Keysight power meters and comes with a 50 MHz calibration port with calibration traceability to NIST.
Specifications
General
| Parameter | Value |
|---|---|
| Interfaces | Proprietary 12-pin connector for sensor cable |
| Display | None (requires external power meter) |
| Supplied Accessories | W281C waveguide to coax adapter (50 MHz calibration adapter) |
Physical
| Parameter | Value |
|---|---|
| Power Supply | Powered by compatible power meter via sensor cable |
| Operating Temperature | 0 to 55 °C |
| Dimensions (W×H×D) | 41 mm × 35 mm × 121 mm |
| Weight | 0.17 kg |
| Shipping Weight | 0.64 kg |
Measurement & Performance
| Parameter | Value |
|---|---|
| Frequency Range | 75 GHz to 110 GHz |
| Power Measurement Range | -30 dBm to +20 dBm |
| Voltage Standing Wave Ratio (VSWR) | 1.08 |
| Sensor Technology Type | Diode |
| Measurement Type | Average power |
System Interface & Connectivity
| Parameter | Value |
|---|---|
| RF Waveguide Port Type | UG-387/U waveguide flange |
| Waveguide Size Designation | WR-10 |
| Compatible Power Meter Models | EPM, EPM-P, P-series, E1416A VXI, 70100A, and 43X series |
Calibration & Accuracy
| Parameter | Value |
|---|---|
| Calibration Port | 50 MHz |
| Traceability | US National Institute of Standards and Technology (NIST) millimeter-wave sensor calibration |
Environmental
| Parameter | Value |
|---|---|
| Storage Temperature Range | -40 °C to +75 °C |
| Operating Humidity | 95% R.H. at 40 °C (non-condensing) |
Power Limits
| Parameter | Value |
|---|---|
| Maximum Input Power | 100 mW (+20 dBm) average/peak |
Connectivity
| Parameter | Value |
|---|---|
| Compatible Sensor Cables | Keysight 11730 series |
Performance
| Parameter | Value |
|---|---|
| Zero Set | ±200 nW |
| Zero Drift | ±40 nW (over 1 hour at constant temperature) |
| Measurement Noise | < 80 nW |
| Power Linearity | -30 to +15 dBm: ±1%, +15 to +20 dBm: +2% / -4% |
Inputs & Outputs
| Parameter | Value |
|---|---|
| Waveguide Flange | UG-387/U-M circular flange |
Product Options
| Parameter | Value |
|---|---|
| Option 100 | Excludes the 50 MHz Type-N calibration adapter |
Technology
Diode
Applications
RF and Microwave Power Measurement