Janz Tec emVIEW emWEB-21, Hardware Manual

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emWEB-21 (
Hardware Manual
) • Installation
© Janz Tec AG Rev. 1.1
2.2.1 DC main power supply
The Power unit (figure 3) is energizing all internal components, the display and its backlight. Thereby
the power supply can vary in between 14 to 32 VDC. The emWEB-21 has a power dissipation with
less than 9 W. Before connecting the DC main power supply the protective bonding conductor (PE)
must be connected.
The power connector is included in delivery. The assignment of this connector is shown in figure 4 and
table 2.
Pin Description
1 + 14..32 VDC
2 NC, do not connect
3 GND
figure 4: Power connector table 2: Power connector assignment
2.2.2 Universal serial bus - USB
To connect the touch-screen to a host computer the USB can be used, too. The connector is USB
Type B, so a standard USB Type A to Type B cable can be used to connect the touch-screen with the
host.
The length of USB cable must not exceed 5 m.
2.2.3 Display
The panel is built as a thin film transistor liquid crystal display TFT-LCD with a diagonal screen of
21.5’’ and up to 16.7M colours.
Description Specification
Display area 476.64 x 268.11 mm
Number of dots 1920x3 (H) x 1080 (V) (RGB vertical stripe)
Pixel Pitch 0.2483 (H) x 0.2483 (V)
Brightness 300 (Cd/m²) typ.
Viewing angles -89° to 89° (H), -89° to 89° (V) typ.
Contrast 5000:1 (typ.)
Backlight LED
table 3: Display specifications
1
2
3