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3.5.5 General
Area
Max On Duration
– the device can time out and recalibrate each key independently after a
continuous touch detection that lasts for the chosen ‘Maximum on-duration’ (MOD). This ensures
that a key can never become ‘stuck on’ due to foreign objects or other external influences. After
recalibration the key will continue to function normally. The nominal delay is selectable to be 10s,
20s, 60s, or infinite (
default
), though the actual delay may vary in some operating modes (see the
QT1106 datasheet for more information).
Detect Integrator
– Detect Integrator (DI) filter confirmation reduces the effects of noise on key
states. The DI mechanism requires a specified number of measurements that qualify as detections
(and these must occur in a row) or the detection will not be reported. In a similar manner, the end
of a touch (loss of signal) also has to be confirmed over several measurements. The QT1106
provides a choice of either two or six DI measurements for confirming start of touch; end of touch
always uses two measurements. Select the appropriate check box.
3.5.6
Low Power/Sync/Sleep Mode Area
Low Power/Sync/Sleep
– this indicator is lit when the QT1106 IC is in a Low Power/Sync/Sleep
mode. Although a Low Power/Sync/Sleep mode may be selected in the
Operating Modes
area,
when a key or the wheel/slider is touched the indicator goes out. This is because for the period of
detection/touch the mode automatically changes to Free Run and then back to the original mode
when detection/touch is finished.
Free Run if in Detection
– select the
Free Run if in Detection
check box to automatically change
the mode to Free Run whenever a touch is selected. This makes the response quicker, otherwise
the device goes back to sleep for the allotted time between measurements.
Low Power Burst (LPB)
– select the
LPB
check box to initiate a burst after each SPI transfer or
/SS Wake pulse, clear the check box to stop the LP bursts.
3.5.7 Other
Options
Restore Defaults
– click this button to restore the default settings.
Show AKS Groups in Main Window
– select this check box to show the selected AKS group with
the keys and wheel/slider colored to show the grouping in the main window.
Enable Sound on Touch
– select this check box to enable a sound to be heard when a key or the
wheel/slider is touched.
