[time-nuts] Re: Custom Wenzel OXCO with unusual output

[Bob Camp]

Hi

Looking at the time plot, it looks like a pretty normal oscillator output. 

Looking at the spectrum analyzer plot, there *might* be something in close. The harmonics
all easily meet a -30 dbc spec. 

As noted in other posts. You really need something like a +/- 10 KHz span to check that part out.

Best bet: You have a TCXO or an XO inside the package. If it can not be tuned on frequency, 
you have an OCXO with a dead heater. 

Bob

> On Apr 6, 2025, at 6:26 PM, Walt via time-nuts <time-nuts at lists.febo.com> wrote:
> 
> Attached is a time-domain plot, with a 50 ohm load.  The waveform is 10 MHz,
> 2.88 Vpp.
> 
> -----Original Message-----
> From: Steve Hendrix, P.E. via time-nuts <time-nuts at lists.febo.com> 
> Sent: Sunday, April 6, 2025 10:28 AM
> To: time-nuts at lists.febo.com
> Cc: Steve Hendrix, P.E. <SteveHx at HxEngineering.com>
> Subject: [time-nuts] Re: Custom Wenzel OXCO with unusual output
> 
> Can you better define "raggedly sine wave"? Perhaps a time-domain plot? 
> The harmonic series looks roughly like what I'd expect from a sawtooth,
> definitely not a clean sine or square wave.
> 
> Steve Hendrix
> 
> On 2025-04-01 2:20 PM, Walt via time-nuts wrote:
>> I picked up a custom Wenzel 500-13248B quartz oscillator and upon 
>> measuring it, I'm not sure if it is working as designed or what.
>> 
>> The RF Out is a raggedy 10MHz sine wave at 4.4Vpp, and a spectrum 
>> analyzer shows peaks at 10, 20, 30, 40, 50, 60 and 70 MHz.  There may 
>> be more but I'm not sure how to acquire them.
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