Preh MC15T5 User Manual

6 

subject to change without prior notice 

05.2004 

 

Preh KeyTec GmbH, www.preh-keytec.com 

 
The Preh Touch Commander serves as graphical input device which makes the screen of 
the computer react immediately on touching graphical operating characters (symbols, 
keys, printings etc.). In this way the touchscreen allows simple, interactive handling of a 
computer even for the  PC-inexperienced  user. For example this input media offers the 
possibility of reducing training time and costs for the operating staff via a comfortable 
user's dialogue. With its ergonomic design and its comfort in handling the Preh Touch 
Commander is applicable in the fields of medicine, commerce, gastronomy, fast-food as 
well in the restaurants and hotel business. 
 
The Preh Touch Commander consists of two logical units, the active matrix color LCD 
(TFT) and the highly sensitive touch sensor. These two units must be considered different 
from each other in regard to their function. This means that the appearance of the picture 
on the LCD (screen) is to be considered independent of the touch drivers. As far as the 
computer is concerned the system is connected with the VGA output (LCD) as well as with 
a serial interface (touching function).  
 
The Touch Commander can thus take over the function of  monitor and mouse. A 
standard mouse can be used along with the Touch Commander. Both a standard 
mouse and the Touch Censor will control the position of the cursor on the screen. 
 
The Preh Screen Commander is without a touch surface. Instead of a touch sensor, you 
will have an anti-reflective, protective glass. In this case you do not have a touch function 
on the screen. You will have a high quality TFT monitor. 
 
The active matrix Color LCD (TFT) has a diagonal of 15" (381 mm) with a resolution of 
1024x768 pixels as well as 262,144 colors. The display has an especially high degree of 
brightness (typ.250 cd/m²) and color brilliancy. The LCD parameters as for example 
brightness, contrast, picture position etc. are adjustable via the On Screen Display (OSD).  
 
The analog resistive 5 wire touch technology has a resolution of 1,024x1,024 points. 
Inputting data is done by touching it e.g. with a finger. The activation force necessary to 
register a touch is 1N. The touch surface consists of a hardened polyester foil with a high 
resistance against scratches and  an insensitivity to dirt, oil and water splashes. The 
durability of the touch sensor is 35 million single actuation per touching point. 
 
Multimedia models allow the possibility of giving the user audio feedback via sounds and 
tones. The volume can be adjusted by a rotary control on the rear side of the base.