The HP 436A power meter is a general-purpose digital power meter intended for manual and automatic radio-frequency (RF) and microwave power measurements. It is compatible with the entire series of HP 8480 thermocouple and diode power sensors. The HP 436A measures either absolute or relative power. It displays absolute power in either watts or dBm, and relative power in dB. The HP 436A offers intuitive and straightforward manual operation as well as optional HP-IB programmability (Option 022).