Can someone tell me what are the modern test equipments in electronics and communication?

or a website where to find these things. and how to use these equipments.thanks for your help.

Answer:
Spectrum analyzers that resolve 1 kiloHertz modulation out of 10 GigaHertz carrier waves, (and higher).

Spectrum analyzers that not only display a signal's frequency versus amplitude, but phase information as well on a 3rd dimension (on a multi-colored display). Or, analyzers that display a signal's frequency, phase, amplitude, AND time, all simultaneously.

Oscilloscopes that sample at several Gigasamples per second, have extremely long memory, but also have single-shot capability to find fast transients.

Communication protocol analyzers to look at signal integrity.

Digital multimeters with 8-digit displays and great accuracy.

Oscillators that are extremely stable and extremely low-noise.


Those are a few I can think of.
.
oscilloscope

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