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Discussion of precise time and frequency measurement

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Re: [time-nuts] FE 5680A "new version" - Filtering the 10 MHz

JH
Javier Herrero
Tue, Nov 15, 2011 10:41 PM

I would rather say DDS generated and poorly filtered
------Mensaje original------
De: David VanHorn
Remitente: time-nuts-bounces@febo.com
Para: Discussion of precise time and frequency measurement
Responder a: Discussion of precise time and frequency measurement
Asunto: Re: [time-nuts] FE 5680A "new version" - Filtering the 10 MHz
Enviado: 15 de nov de 2011 23:31

Close in impedance discontinuity?


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I would rather say DDS generated and poorly filtered ------Mensaje original------ De: David VanHorn Remitente: time-nuts-bounces@febo.com Para: Discussion of precise time and frequency measurement Responder a: Discussion of precise time and frequency measurement Asunto: Re: [time-nuts] FE 5680A "new version" - Filtering the 10 MHz Enviado: 15 de nov de 2011 23:31 * This is at the RF connector : http://i.imgur.com/Bg3SK.png That's just nasty and indescriptible. Close in impedance discontinuity? _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
SM
Sylvain Munaut
Tue, Nov 15, 2011 10:47 PM

I would rather say DDS generated and poorly filtered

It's not generated from a DDS. It's from a xilinx PLD, then through a
L and then through a C to the RF connector. The signal at the L output
is fairly sinusoidal (at least monotonic near the crossing), but after
the cap, it's like that ...

Cheers,

Sylvain
> I would rather say DDS generated and poorly filtered It's not generated from a DDS. It's from a xilinx PLD, then through a L and then through a C to the RF connector. The signal at the L output is fairly sinusoidal (at least monotonic near the crossing), but after the cap, it's like that ... Cheers, Sylvain