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3M™ MicroTouch™ Software MT 7 User Guide 29
3M Touch Systems, Inc. Proprietary Information – 25695M
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.