The Keysight Technologies (formerly Agilent HP) 8482A is a highly accurate and stable thermocouple RF power sensor designed for measuring average power levels from -30 to +20 dBm (1 µW to 100 mW) over a wide frequency range of 100 kHz to 4.2 GHz. Known for its exceptional SWR characteristics, it minimizes measurement mismatch uncertainty. It is widely used across calibration labs and RF testing facilities, providing direct traceability to NIST and seamless compatibility with EPM, EPM-P, P-series, and classic 43X series power meters.

Specifications

General

ParameterValue
DisplayNone (results displayed on connected power meter)
Recommended Calibration Interval1 year

Physical

ParameterValue
Power SupplyPowered via sensor cable from connected power meter
Operating Temperature0 to 55 °C

RF Performance Specifications

ParameterValue
Frequency Range100 kHz to 4.2 GHz
Power Measurement Range (dBm)-30 to +20 dBm
Power Measurement Range (Watts)1 µW to 100 mW
Sensor TypeThermocouple
Maximum SWR (100 kHz to 300 kHz)1.60
Maximum SWR (2.0 GHz to 4.2 GHz)1.30
Zero Set (Noise)< ±50 nW
Measurement Noise< 110 nW

Power Handling and Damage Limits

ParameterValue
Maximum Peak Power15 W (for < 10 µs)
Maximum Pulse Energy30 W·µs

Physical and Mechanical Characteristics

ParameterValue
Input Connector TypeType-N male
Weight (Net)0.17 kg (6 oz)

Connectivity and Compatibility

ParameterValue
Compatible Power Meter ModelsEPM (E4418A/B, E4419A/B, N1913A, N1914A), EPM-P (E4416A, E4417A), P-series (N1911A, N1912A), VXI E1416A, 70100A, 435A/B, 436A, 437A/B, 438A
Cable Interface TypeKeysight 11730 Series power sensor cables

Environmental and Safety Specifications

ParameterValue
Operating Temperature Range0 to 55 °C
Storage Temperature Range-40 to 75 °C

Metrology and Calibration Reference

ParameterValue
Reference Calibration Frequency50 MHz

RF Characteristics

ParameterValue
Nominal Impedance50 Ω

Performance

ParameterValue
Measurement TypeTrue average power

Technology

Thermocouple RF Power Sensor

Applications

RF and Microwave Power Measurement