Re: AD9559 : 0.1Hz loop bandwidth

Hi Paul,

Thank you for your advice.

Our application is synchronous ethernet equipment, so we should pass G.8262 test.

In case of G.8262 wander transfer test, we should set the DPLL loop bandwidth to 0.1hz.

And we can pass the wander transfer test for your help.

But we have still some problem to proceed next test (Wander generation in locked mode).

In default loop bandwidth (50hz), the TIE data between syncE master and our equipment is almost same.

But in case of 0.1hz loop bandwidth, the TIE data is not good and fail the G.8262 wander generation in locked mode. Please refer the below images.

              1) TIE : 50Hz LBW

             2) TIE : 0.1Hz LBW

             3) MTIE : 0.1Hz LBW

Please advice.

Thanks and best regards.

MK