It is certainly possible to get nice low-phase-noise sources at 150 MHz instead
of 100 MHz, but these would need to be special ordered. How much of a
challenge is using 100 MHz? Does the HMC830 not allow us leeway here?
One temporary solution would be to use an HMC830 (or equivalent) eval board to
generate 150 MHz from another reference frequency and feed that to the Sayma
input connector. However, over the longer term I think it would be good to
have Sayma able to operate from a more standard reference frequency such as 100
MHz.
> -Original Message-
> From: ARTIQ [mailto:artiq-boun...@lists.m-labs.hk] On Behalf Of Sébastien
> Bourdeauducq via ARTIQ
> Sent: Monday, June 18, 2018 7:29 AM
> To: artiq@lists.m-labs.hk
> Cc: Ken Brown ; Jungsang Kim
>
> Subject: [ARTIQ] Sayma input frequency
>
> Hi,
>
> any objections to supporting only the RTIO clock frequency (currently
> 150MHz) at the Sayma input, instead of 100MHz?
> Are you using non-programmable 100MHz references?
>
> Sébastien
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