The connection parameters do not work exactly

[xpm00]

i set the connected time is 30ms

but i use dongle to grab the bag ,i find that the  connection parameters were wrong , it can not fix at a value 

it looks like it change several times.

[Karl Ylvisaker]

Hello,

I concur that these un-even period seem peculiar, but it is hard to say without seeing the entire trace.
Could you share the entire trace file, instead of the screenshot? For a large trace you should point out or highlight which packet numbers or sequences you would like us to take a look at.

Could you also elaborate how you have configured the connection parameters? Did you do this on the peripheral or central side of the link, or both?

Best regards,
Karl