impedance analyzer

What's an impedance analyzer? Is it an spectrum analyzer too?

4294A impedance analyzer - Google Images

You can measure the impedance of a circuit using a impedance analyzer.
It supplies a signal to determine the impedance in a circuit relation to the signal that is injected
This will not work like a spectrum analyzer.
A spectrum analyzer is basically a receiver that sweeps a range of frequencies to give a graphical display of the signals and signal levels that are received.

Electronman said:

What's an impedance analyzer? Is it an spectrum analyzer too?

4294A impedance analyzer - Google Images

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It is a meter specifically tailored to measure complex impedance of a one-port network at high frequencies. It might be more closely compared to an RF network analyzer, but while the RF network analyzer references measurements to a 50 or 75 ohm terminal characteristic impedance ( limiting itself to measureing values that are perhaps two orders of magnitude above and below this value) the impedance analyzer has a much larger range of impedances that can be measured. I have not seen an impedance analyzer that also includes a spectrum analyzer function.

Electronman said:

What's an impedance analyzer? Is it an spectrum analyzer too?

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It's the AC counterpart of an ohmmeter. It can measure the impedance of a circuit component, at some specific AC frequency (or range of frequencies) rather than at DC.

RadioRon said:

It is a meter specifically tailored to measure complex impedance of a one-port network at high frequencies.

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Impedance analyzers are not necessarily tailored to measure at "high frequencies". Often they will cover low audio frequencies.

The HP4192 covers the range from 5 Hz to 13 MHz. The HP4194 covers 100 Hz to 40 MHz. The Wayne-Kerr 6440B covers 20 Hz to 3 MHz. These are instruments that can perform measurements at thousands of frequencies in their design span.