Keysight / Agilent / HP 3746A Meter Level

The 3746A Selective Level Measuring Set makes fast, accurate selective level measurements. A built-in synthesizer gives high tuning accuracy and 1 Hz resolution across the entire 50 Hz to 32 MHz frequency range. Tuning can be performed by entering a single frequency, stepping between frequency limits, stepping through a set of unrelated frequencies, or by FDM plan description.