[USRP-users] X310 External 10 MHz and 1 PPS specifications

Matt Ettus matt at ettus.com
Tue Sep 23 18:08:36 EDT 2014


50 feet should not be a problem unless you were to use some really horrible
cable.

Matt


On Tue, Sep 23, 2014 at 2:28 PM, Kemp, Elizabeth - 1008 - MITLL via
USRP-users <usrp-users at lists.ettus.com> wrote:

>  Hi,
>
>
>
> Does anyone know what the input requirements are for the rear-panel
> external 10 MHz reference input and the 1 PPS input?
>
>
>
> I am using an OctoClock-G and will need to connect it to USRPs that may be
> as far away as 50 ft.  I’m trying to determine if the signal level at the
> USRP input will be sufficient.  The OctoClock-G output specs are typ. ~1.4
> Vpp square wave for the 10 MHz output (50 ohm output impedance), and a 5V
> logic-level pulse for the 1 PPS output, according to the data sheet.
>
>
>
> Thanks,
>
> Liz
>
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>
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