Glen Zook gzook at YAHOO.COM
Sat Feb 14 14:43:56 EST 2004

Those types of attenuators are used on many of the
older signal generators like the URM-26, Measurements
Model 80, etc.  What they do is to match the output of
the signal generator to 50 ohms.  On the calibrated
attenuators on the signal generator there are usually
two marks that indicate the 6 dB difference in signal
level.  That is, if the "higher" mark is lined up at
10 microvolts the "lower" mark will be lined up at 5

When you use the signal generator without a "pad" you
don't really have any idea as to just what the output
impedance is.  But, with the attenuator in place, the
output of the signal generator matches 50 ohms.

Now, in more modern devices like service monitors, the
output is usually already matched to 50 ohms.

Glen, K9STH

--- kc8keg <kc8keg at MEI.NET> wrote:

I aquirred some mil. spec. attenuators at a hamfest
and hope somone on the list may able to provide data.

Glen, K9STH

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