3M MT7 manual Sensor Frequency Procedure, Testing the Newly Selected Frequency

3M™ MicroTouch™ Software MT 7 User Guide 29

If you are using the pen and you lift the pen from the sensor, the system does not recognize finger touches until after a system-defined time delay. If your finger is on the sensor when the pen lifts off, the system ignores the finger until you lift off and touch the sensor again. For example, if you rest your hand on the sensor while you write with the pen, you can lift the pen and put it back again without your hand touch being acknowledged.

Sensor Frequency

Note: This option applies to capacitive EX series controllers.

From the Tools tab, you can choose the Advanced Options button. From the Advanced Options dialog, select Enable Frequency Selection to activate this option on the Controller tab if you are using a capacitive EX-based controller.

This option adjusts the operating frequency of the touch controller. In general, you will not need to adjust the Sensor Frequency. However, if you are experiencing problems with a jittery cursor, ragged lines, or random touch points, you may want to run the Enable Frequency Selection option.

Use the Enable Frequency Selection option to test the available frequency settings and determine the best frequency. The range of frequency settings and the default setting depends on your touch controller. You can set a new operating frequency, and then check the performance of the touch sensor at that frequency setting.

Be aware that if you choose Restore Factory Settings → Controller from the Tools tab, you will change the Sensor Frequency to the factory default setting. You may need to redo the Sensor Frequency at this time.

Sensor Frequency Procedure

From the Tools tab, you can choose the Advanced Options button. From the Advanced Options dialog, select Enable Frequency Selection to activate this option on the controller tab if you are using a capacitive EX based controller.

In the Sensor Frequency box, you will see a pull down list of several frequency options. In general, the highest possible frequency will provide the best results. Once you change the frequency, do not touch the sensor for approximately 30 seconds. Touch will return when the frequency has been changed. Test to see if you are satisfied.

On a pen controller system, you have the option to change the frequency for both your finger and the pen if you are using Pen/Finger mode.

Testing the Newly Selected Frequency

Any time you adjust the Sensor Frequency you should test how the sensor is working and verify you are satisfied with the operation of the touch sensor.

Test the sensor by touching in several places and sliding your finger around the sensor. The cursor should hold steady and smooth. If you see erratic or jittery cursor movement, readjust the Sensor Frequency.

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