>
> Chinese tools must be allways watched with some circumspection.
> I've bought an UT81B  http://www.uni-trend.com/UT81b.html
> for using on field and I was very dissapointed. It has low contrast,
> it has a true analogic bandwith of 2MHz instead of 8MHz as it claims
> and above 2Mhz its killing the edges of the analogic signal measured.
> You may see how it looks a square wave of 8MHz in the image attached.
> I will never buy such things.
>
> Vasile

If the bandwidth is 8MHz, wouldn't we expect it to turn an 8MHz square
wave into a sine wave? The LPF cuts off a 8MHz, suppressing the components
at 24MHz, 40MHz, etc. Without these components, the square wave is a sine
wave. With an 8MHz bandwidth, I would not expect a reasonable square wave
image above 1.5MHz or so (which would only include the fundamental, first,
and third harmonics).

Harold


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