Sanyo 42LM4RTC User Manual download pdf (Page 16)

MONITOR MODE

Fig 10

1. This section is used to check the output of the touchscreen over the whole display area

represented by the white box in the centre. It is useful in checking for any dead areas on the

touchscreen and the performance of the touchscreen being able to follow the finger

accurately and responsibly (Fig 10).

2. When using this feature make sure that the touchscreen output is disabled by un-ticking the

Enable Selection Control in the output section. When the finger is removed for a few

seconds the display will automatically clear for more testing.

3. When the Advanced box is ticked the Inter-Wire Linearity can be adjusted if necessary.

This allows the driver to handle different response curves caused by different sizes of

touchscreen and different glass thickness.

4. The linearity can be adjusted for correct positioning between the wires. The default setting is

centre, which should be satisfactory for most applications (Fig 11/12).

5. If the touch sensor is large and there is a large gap between the wires or the signal is very

strong the slider may need to be moved to the right. This is because the peak is very strong

and involves very few wires and the algorithm to select touch position needs to change.

Fig 11 Fig 12

Inter-Wire Linearity set correctly Inter-Wire Linearity set incorrectly

1 2 ... 11 12 13 14 15 16 17 18 19

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Sanyo 42LM4RTC User Manual Page 16