I think there are quite some low end network analyzer
which only works up to 1MHz. I also know that the
HP4194 we have does not go to 1GHz. Still they are quite 
expensive.  For example, Venerable Industry and Ridley
Engineering have both network analyzers for the power 
supply design and only goes to MHz but they are about 
US$5000 and up. So maybe it is not that simple.

Regards,
Xiaofan

-----Original Message-----
From: Buehler, Martin [mailto:Martin.Buehler@keymile.com]
Sent: Friday, July 08, 2005 7:18 PM
To: Microcontroller discussion list - Public.
Subject: [EE] Network Analyzer 50Hz-1Mhz (lowcost solution?)

when doing analog circuits like amplifiers and filters, it's often
helpful to check if the behaviour of the 'real circuit' is the same as
what you did in theory.

a professional network analyzer, which usually goes up to a few ghz in
frequency, is really an overkill in price, size, bandwidth and
functionality for a hobbyist. i think in most cases a total bandwidth of
50hz to 1mhz is enough.

-> requirements: 
	frequency range 50hz - 1mhz
	measuring bandwidth variable
	transfer and reflexion measurement
...
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