Products > FMC230

the external reference clock mode of FMC230

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Jerry:
Hi Kyu,


With your suggestion,  I increased the input level to 10dbm and PLL was locked in external ref mode. Thank you very much.  But could you explain more about it, I'd like to know more details about it.


By the way, the input level shown in FMC230 user manual page 8 is 0dbm, is that incorrect,actually, right?


Thanks,


Jerry

Kyu:

Jerry,


I looked up the datasheet of the clock device and it shows that 2V is reuiqred for input logic high. 0dBm should not be strong enough, however the User Manual also says LVTTL level supported. I will investigate this issue and update the user manual. Thank you for your feedback.


Kyu

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