9. DEVICE FRONT
Note 2
Only for the Vision 312Plus products.
Note 3
The lifetime of a LED, when operated at an ambient temperature of 25 ±2
○
C, is
defined as the time until the brightness reaches less than 50% of its original value.
Note that the LED lifetime will be shorter than specified in this document if the LED
operates in a higher ambient temperature.
For power supply below 7.5 V, see section
.
9.2 Ambient light sensor
The ambient light sensor detects the ambient light intensity and adjusts the LCD brightness via application
software.
9.2.1 Characteristics
Symbol
Parameter
Min
Max
Unit
E
v
Illuminance
0.0
65k
lx
9.3 Status LED
The Status LED is an RGB LED. The color is programmable by the customer and its brightness is ad-
justable.
9.4 Touchscreen
The Vision 312 device is equipped with a projective capacitive touchscreen designed to be used as an
input device for the application running on the device. It can be operated with bare fingers and gloves.
The touchscreen supports multi-touch gestures with two fingers.
Water drops do not trigger touch functions. The touchscreen also supports palm suppression (the palm
on the touchscreen does not lead to erratic behavior).
Parameter
Note
Min
Unit
Accuracy for 10 mm target
≤
2 mm away from edge of active area
±2
mm
> 2 mm away from edge of active area
±1
mm
Reporting rate for single touch
1
>100
Hz
Response time
from idle mode
50
ms
from active mode
25
ms
Pinch separation
in X and Y direction diagonal
10
mm
diagonal
14
mm
Note 1
Depending on configuration and noise conditions.
© TTControl GmbH 2020. All rights reserved.
Confidential and Proprietary Information
36
Document Number:
D-156-G-02-001
