On 02/23/2019 11:33 PM, Jason Roehm wrote:
On Feb 23, 2019, at 5:41 PM, Marcus D. Leech via USRP-users
<[email protected]> wrote:
3) I believe I read somewhere that the GPSDO uses the same 10MHz lines as the
REF in. What happens if I have a 10Mhz source hooked up while the gpsdo module
is installed when I do not have a gps lock? What would happen if a 10Mhz input
was hooked up while I did have a gps lock?
There are electrical cross-talk issues between the GPSDO's 10MHz line and the
external reference line. So, if you plan to use an external
reference, you should remove the GPSDO module from the board.
Wow, it looks like you buried the lede there; that could be an issue for a
design I was planning. Is this documented anywhere? Failing that, do you have
any additional details on the issue?
Thanks.
Jason
It is documented here:
https://files.ettus.com/manual/page_usrp_b200.html#b200_known_issues
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