The PPS input is conditioned with a:
http://www.ti.com/product/SN74AUP1T57/description
Looks to me like it should work just fine.
On 2016-05-03 10:23, khalid.el-darymli via USRP-users wrote:
> Hi,
>
> I'll appreciate any help on the following. According to the link below [1],
> the PPS voltage for N200 should be in the range [3.3, 5] V p-p.
> [1] http://files.ettus.com/manual/page_usrp2.html#usrp2_hw_leds
>
> I am getting a PPS signal through fan-outs from an external Firefly-1A GPSDO.
> I measured the output PPS voltage using a scope, and it is 2.52 V P-P
> (terminated with 50 ohms).
>
> Would this relatively low PPS voltage work for N200? I am having a problem
> syncing two N200 units (2 LFRX/ 1 LFTX ), and I am not sure if this would be
> the cause?
>
> Thank you.
>
> Best wishes,
> Khalid
>
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