My scope does not have a 50 ohm input. If I connect the generator
output to a BNC T-connector with a 50 ohm termination on the other
end, it makes no difference in the waveform shape. I've probably
overstated the distortion a bit. I looked at it again this evening and
it is not quite as I had described it earlier. The waveform is fairly
rounded however when it approaches the peaks.
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--- In hp_agilent_equipment@..., J Forster <jfor@...> wrote:
Is your scope 50 ohm input or do you have a 50 ohm termination in
circuit?
-John
I've recently acquired an HP8601A sweep generator with full manual. It
appears to be in pretty good shape. A cursory inspection suggests
everything is working about right, although I haven't run any
calibration checks yet. Just one problem I can see so far. When I
connect the RF output to the vertical input of my oscilloscope and set
it to the CW function, I get a rather odd-shaped sine wave--not your
usual well-shaped waveform but more like two connected U-shapes for
each
half-cycle. I'm guessing this is not normal and there's some sort of
distortion being introduced in one of the oscillators or their amps or
control circuits. Anyone have any experience with a problem like this
or
have a suggestion about what might be going on? Thanks in advance for
any input.
