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# Defines controller firmware settings
The firmware dialog shows the firmware version release, allows firmware settings to be updated and for the sensor to be tested. This firmware page describes the firmware options for the Zytronic, X-Y controllers.
Function | Description
Firmware version | This provides the controller firmware version release, serial number and controller type.
| Initiates a normalisation of the sensor array wire levels.
| Displays the x and y sensor wire array matrix levels. Applying a touch to the sensor will register a response in the x and y wires levels. This graph can be used to determine the correct operation of all the wires within the sensor. This can be done by applying a touch to the sensor and moving your finger left to right then top to bottom over the sensor. All wires should register a peak relative to your finger movement across the sensor. Please note: touch operation is disabled when the Test Sensor page is open. The Test Sensor page can be terminated by using the Escape key via a connected keyboard or a mouse to press the Close button located in the bottom right hand corner of the page or by holding a stationary touch on the test screen for 10 seconds.
Threshold | This allows the sensitivity of the sensor to an applied touch to be increased or decreased. Lower values provide greater sensitivity and higher values provide reduced sensitivity. Default value is 22.
Periodic Reset | This function, when enabled, sends an instruction to the controller to carry out an equalisation of the sensor wire levels at a periodic interval of every 10 minutes. This interval of 10 minutes is set as a default and cannot be changed. The driver default setting is for the Periodic Sensor Equalisation to be disabled. Warning: This function should only be enabled after discussion with the Zytronic technical support team. This function is only recommended to be used in certain scenarios where noise in the final integrated system builds up over time. The Periodic Sensor Equalisation function, in some cases, may allow noise levels in the system to be equalised and potentially prevent noise build up causing random cursor movement.
Glass Thickness | The controller can be adjusted using this setting to operate through various overlay thicknesses. Available options are Thin, Medium and Thick. The Medium setting is the default. These settings operate on time averaging of captured data from the sensor, hence the thicker the overlay, the sensor response time is reduced due to the greater time interval of data captured. These options should be used in conjunction with the Threshold setting adjustment to obtain optimum operation when using various thicknesses of overlays.
| Initiates a controller firmware reset.
| This restores the factory firmware default settings.