Agilent / HP / Keysight 85719A

The Agilent 85719A is a Noise Figure Card.

The noise figure measurement personality adds noise-figure measurement capability to the Agilent 8590 E-series Option 119 spectrum analyzers.

Combined with the 346B noise source, the 87405A preamplifier, and Option 119, this measurement personality provides displayed swept noise figure and gain measurements from 10 MHz to 2.9 GHz.

The 85719A offers one-point measurement capability for quick results, a repeatability calculator for determining measurement time/repeatability tradeoffs, noise figure/spectrum analyzer mode switching for stray signal detection, and selectable measurement
bandwidths to directly measure narrowband devices, such as IF/receiver systems.

No other noise figure instrument offers comparable measurement capability in a portable package. In addition, the 85719A incorporates many of the features found in the Agilent 8590 E-series spectrum analyzers.

Some are, save/ recall functions and memory card  reader for storage of measurement data, displays, states, and excess
noise ratio (ENR) data tables.

The 85719A, with its menu driven interface and marker functions, simplifies measurements.

Marker-function capability makes noise figure and gain for the entire sweep easy to read.

Its user-friendly interface makes this measurement system easy to use.