Agilent / HP / Keysight 3575A

This unit is a versatile two channel analyzer which can measure dBV, dB ratio and degrees from 1Hz to 13MHz and display the absolute amplitude level or amplitude ratio of signals present at the inputs.

In addition, it can measure the phase relationship of the two signals.

This unit is a broadband detector, which is easy to use because no frequency tuning is required.

Since a dedicated tracking source is not required to operate with this unit, a wide selection of stimuli is possible.

This flexibility coupled with a variety of possible amplitude, gain and phase outputs give you a wide choice of cost/results tradeoffs.