HP/Agilent-Keysight E4419B

The E4419B power meter is designed for bench and automatic test equipment (ATE) use.

True dual-channel power meter – two simultaneous power readings
Fast measurement speed (up to 100 readings per second, over the GPIB, with E-series sensors)
Speed improvement of x2 using the 8480 series power sensor (compared to the 437B)
No range-switching delays with 8480 series sensors, and only one fast-range switching point with E-series sensors
Code compatibility with 438A power meter
GPIB and RS232 connector for remote control of all functions

Supplemental characteristics (shown in italics) are intended to provide additional information, useful in applying the instrument by giving typical (expected), but not warranted performance parameters. These characteristics are shown in italics or labeled as “typical”, “nominal” or “approximate”.
For information on measurement uncertainty calculations, refer to Application Note 64-1C, “Fundamentals of RF and Microwave Power Measurements”, literature number 5965-6380E.
Frequency range: 9 kHz to 110 GHz, sensor dependent
Power range: –70 dBm to +44 dBm (100 pW to 25 W), sensor dependent.
Power sensors: Compatible with all 8480 series and E-series sensors
Single sensor dynamic range: 90 dB maximum (E-series sensors), 50 dB maximum ( 8480 series sensors).
Display units: Absolute: Watts or dBm. Relative: Percent or dB.
Display resolution: Selectable resolution of 1.0, 0.1, 0.01, and 0.001 dB in Log mode, or 1 to 4 digits in linear mode.
Default resolution: 0.01 dB in log mode, 3 digits in linear mode.
Datasheet