Thinking about this
I am not 100% sure you can trigger the 202 from a drum machine like you can on the 101 via the EXT CLK IN..

The only way I know so far is to, connect the 202 to a 101 via the cv & gate inputs. Then connect the rim trigger from the 909 to the ext clkin on the 101 and the you will have the 101 & 202 being triggered from the rim.