[time-nuts] Lucent KS-24361, HP/Symmetricom Z3809A, Z3810A, Z3811A, Z381...
Bob Camp
kb8tq at n1k.org
Tue Nov 4 12:45:47 UTC 2014
Hi
All of these GPSDO boxes have enough spurs to bother something like a direct multiply microwave radio. Most of them are plenty clean enough to drive a counter standard input.
Bob
> On Nov 4, 2014, at 6:23 AM, GandalfG8--- via time-nuts <time-nuts at febo.com> wrote:
>
> Hi Bob,
>
> Thanks for that, I wasn't expecting too much from the 10MHz, thinking of it
> as probably a quick and dirty reference for portable test gear, but maybe
> wasn't expecting it to be quite that bad either:-)
>
> 15MHz I would have expected to be reasonable, and my goal is still to
> extract 5 MHz directly from the oscillator, buffered as necessary but with as
> little degradation as possible, but for now I've had to content myself with
> live monitoring of the plots on a couple of Pendulum counters, what with
> all being as chaotic as usual round here and far too much test gear stacked
> up in piles and nowhere near the bench:-)
>
> You've whetted my appetite though so will try and stretch some cables later
> and take a closer look at the outputs.
>
> Regards
>
> Nigel
> GM8PZR
>
>
>
> In a message dated 03/11/2014 23:55:52 GMT Standard Time, kb8tq at n1k.org
> writes:
>
> Hi
>
> I got a chance to look at phase noise today. I’ll try to post the plots
> later. Quick summary:
>
> 10 MHz - ugly. Lots of spurs, many of them close in. Poor phase noise
> floor.
>
> 15 MHz - pretty good. Noise floor is not as good as a TBolt (by 5 to 15
> db). Far fewer spurs than the 10 MHz, fewer spurs than the TBolts I’ve looked
> at.
>
> ADEV on a short run looks better than an un-tuned TBolt. I’ll need a much
> longer run to see what it’s really doing.
>
> Bob
>
>> On Nov 3, 2014, at 1:20 PM, GandalfG8--- via time-nuts
> <time-nuts at febo.com> wrote:
>>
>> Ah, that's interesting, perhaps it wasn't me after all then.
>>
>> Did you have the same flashing ON light symptoms?
>>
>> Regards
>>
>> Nigel
>> GM8PZR
>>
>>
>> In a message dated 03/11/2014 17:56:56 GMT Standard Time,
>> hmurray at megapathdsl.net writes:
>>
>>
>>> It turns out this is what happens if you switch the "Output Level" from
>
>> 17
>>> to 23, obviously an advisory indication to draw attention to the higher
>>> output. Switching it back reduces the level, as expected, and returns
> the
>>> LED function to normal. Phew:-)
>>
>>> I can't remember switching it but don't suppose it arrived like that
> so
>>> guess I must have done.
>>
>> My pair came with Ref-0 set at 17 and Ref-1 at 23.
>>
>>
>> --
>> These are my opinions. I hate spam.
>>
>>
>>
>>
>> _______________________________________________
>> time-nuts mailing list -- time-nuts at febo.com
>> To unsubscribe, go to
> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
>> and follow the instructions there.
>
> _______________________________________________
> time-nuts mailing list -- time-nuts at febo.com
> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
> and follow the instructions there.
More information about the Time-nuts_lists.febo.com
mailing list