Sync shift The sync shift option modifies FX synchronization so that FX2 runs with a time offset. This means that the FX2 cycle start point is delayed relative to FX1, but the amount of the delay remains constant. Random operation Selecting random operation makes random changes in the duration of those FX effects that have repeat cycles. This means that some cycles are shorter and some cycles are longer in a random pattern. The random sync option changes the duration of FX repeat cycles in a random pattern. Cycle duration is random, but it is always changed by the same amount for FX1 and FX2 so that FX remain synchronized. The overall speed of this synchronized effect is controlled on channel The random no sync option changes the duration of FX effect cycles in a random pattern, and FX1 and FX2 are not synchronized. The speed of FX1 and FX2 effects are controlled independently on channels 16 and 18 respectively.