A lottery ticket dispenser array includes ticket bins, with each bin defined by a housing for receipt of a supply of interconnected lottery tickets. Each bin has an electronic drive mechanism that dispenses the lottery tickets therefrom. A slot is defined in the back side of each bin housing through which the lottery tickets are dispensed from the internal space, and a separation device is adjacent the slot. A calibration field is located relative to the slot such that the lottery tickets pass alongside the calibration filed in a travel path of the lottery tickets through the slot. An optical scanner is disposed internal to the housing at a location to read the marks in calibration field. Based on a position of a forward edge of a ticket in the calibration field, a control system determines an adjustment to a predefined length of the leading ticket to advance in a subsequent dispense cycle.