"Jan Panteltje" schreef in bericht
...
On a sunny day (Sun, 2 May 2004 02:06:09 +0200) it happened "Frank
Bemelman"
wrote in
:

"Jan Panteltje" schreef in bericht
...
On a sunny day (Sat, 1 May 2004 23:37:26 +0200) it happened "Frank
Bemelman"
wrote in
:

"Jan Panteltje" schreef in bericht
...
On a sunny day (Sat, 01 May 2004 14:19:59 +0100) it happened Paul
Burridge
wrote in
:

Hi,

I have a spare RF signal generator that has an unmarked output from
a
type of socket I've never seen before. What's the simplest way of
establishing its output impedance? I've had a few ideas but no
doubt
someone out there will know of something better, since I always
seem
to end up making unnecessary work for myself.
Any suggestions?

Load it with 50 Ohms, and measure output voltage, remove load and
measure
again.
If it is half, it is 50, else do the math.

If it is half, you've got a funny generator.

Why that?

I expect amplitudes to double or at least rise, after
removing a load. Just nitpicking
Yes - sentence construction could have been more clear,
it should have been inferred as 'If it is half *before you removed it*
now that would be wrong too, 'If it WAS half' OK.
No, actually it was correct, cause 'it' referred to the first measurement.
Did you collect many nits while picking ;-)?

Well, I also wondered what it means to Paul, once he has
figured out that output impedance. Will it change his life
dramatically...

--
Thanks, Frank.
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