The HP Keysight 8484A is a highly sensitive diode power sensor designed for measuring average RF and microwave power levels from -70 dBm to -20 dBm over a frequency range of 10 MHz to 18 GHz. Used with compatible HP/Keysight power meters, it provides highly accurate measurements on a 50-ohm load and includes the HP 11708A 30 dB reference attenuator for precise calibration.
Specifications
General
| Parameter | Value |
|---|---|
| Interfaces | Proprietary multi-pin power sensor connector (compatible with HP 11730-series cables) |
| Display | None (uses power meter display) |
| Sensor Type | High-sensitivity diode |
Physical
| Parameter | Value |
|---|---|
| Power Supply | Powered by compatible power meter via sensor cable |
| Operating Temperature | 0 to 55 °C |
RF Performance
| Parameter | Value |
|---|---|
| Frequency Range | 10 MHz to 18 GHz |
| Power Range | -70 dBm to -20 dBm (100 pW to 10 µW) |
| Nominal Impedance | 50 ohms |
| Maximum SWR (10 MHz to 30 MHz) | 1.40 |
| Maximum SWR (30 MHz to 2 GHz) | 1.15 |
| Maximum SWR (2 GHz to 12.4 GHz) | 1.20 |
| Maximum SWR (12.4 GHz to 18 GHz) | 1.25 |
| Maximum Reflection Coefficient (10 MHz to 30 MHz) | 0.166 |
| Maximum Reflection Coefficient (30 MHz to 2 GHz) | 0.07 |
| Maximum Reflection Coefficient (2 GHz to 12.4 GHz) | 0.091 |
| Maximum Reflection Coefficient (12.4 GHz to 18 GHz) | 0.111 |
Power Handling & Damage Limits
| Parameter | Value |
|---|---|
| Maximum Average Power | 200 mW (+23 dBm) |
| Maximum Peak Power | 200 mW (+23 dBm) |
System Compatibility & Interfaces
| Parameter | Value |
|---|---|
| Compatible Power Meters | HP 435B, 436A, 437B, 438A |
| Sensor Cable Type | HP 11730 series power sensor cables |
| Calibration Reference Requirement | Requires 1 mW (0 dBm) 50 MHz reference source with 11708A 30 dB attenuator |
Calibration & Accessories
| Parameter | Value |
|---|---|
| Included Reference Attenuator | HP 11708A 30 dB attenuator |
Physical Characteristics
| Parameter | Value |
|---|---|
| RF Input Connector | Type-N (male) |
Performance
| Parameter | Value |
|---|---|
| Dynamic Range | 50 dB (-70 to -20 dBm) |
Reference Attenuator
| Parameter | Value |
|---|---|
| Reference Attenuator Model | 11708A |
Technology
Diode
Applications
RF and Microwave Power Measurement