Keysight Agilent HP 435A Features:
- Calibrated in watts and dBm
- Accuracy is ±1% of full scale on all ranges
- Accuracy is ensured by the following: an internal automatic zeroing circuit which removes error due to the ambient temperature output of the power sensing device, a calibration factor adjustment which accounts for error due to the frequency response of the power sensing device, and a internal calibration reference which has an output of 1 mW (±0.7%).
The system power level range, frequency response, and load impedance are dependent on the power system. The Keysight Agilent HP 435A meter has a frequency range (dependent on power sensor) of 100kHz to 18GHz.