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From: Cursitor Doom <cd999666@notformail.com>
Newsgroups: sci.electronics.design
Subject: Re: Distorted Sine Wave
Date: Sat, 1 Jun 2024 16:34:16 -0000 (UTC)
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On Sat, 1 Jun 2024 15:44:17 +0200, Jeroen Belleman wrote:

> On 6/1/24 14:07, Cursitor Doom wrote:

>> I've taken a shot of the waveform into the 50 ohm input. It's around
>> 850mV peak-peak. Hopefully the slight distortion I spoke about is
>> visible; the slightly more leisurely negative-going excursions WRT
>> their positive-going counterparts. So it's not a pure sine wave as one
>> would expect. Does it matter? I don't know!
>> 
>> https://disk.yandex.com/i/7cuuBimDbOIBZw
> 
> The shape looks perfectly acceptable to me. This is +3dBm into 50 Ohms.
> Is that what it's supposed to be? Canned reference oscillators most
> often deliver +13dBm, sometimes +10dBm.

Is it? I only make it about half your figure: +1.65dBm.
I admit I'm frequently prone to careless errors, so stand to be corrected, 
but here's my method:
850mV peak to peak is 425mV peak voltage. Average of that is 0.425x0.636 = 
0.27V. Average power is average volts squared divided by the load 
impedance of 50 ohms = 1.46mW = +1.65dBm.

I shall consult the manual to see what it ought to be - if I can find it, 
that is, as PDF manuals are a nightmare to navigate IME.