A universal transmitter capable of transmitting a plurality of signals at a plurality of different modulations and frequencies which provides a simplified programming setup so that multiple signal configurations can be programed quickly and easily. The first conveyance receives singulated sheets and conveys the sheets to an accumulator station to produce completed collations. When an exhaust valve actuation fault is detected for a particular cylinder, the corresponding intake valve is deactivated in circumstances when it would otherwise be activated in order to prevent the intake valve from opening into a cylinder that contains high pressure combustion gases.