Firstly, I am using a Fuji XT1 with V6 II, and another V6 II on a Canon Speedlite 430 EX II. I am trying to take a light meter reading with the Sekonic L-308S by connecting the light meter via a 3.5mm to PC male sync cable. The 3.5mm jack into the V6 II on top of the XT1 and the PC sync end into the light meter, but so far I haven't been able to take a light meter reading. When I hit the meter button on the Sekonic, the meter reads 'Er' (error) and none of the flashes are triggered to be able to take a reading.
I appreciate that this might be the incorrect cable for this job, and if so, which cable do I require to be able to take a light reading with this set up?