CompuLab SBC-X270 Bedienungsanleitung PDF herunterladen (Seite 37)

SB-X270 PC/104+ Single Board Computer

CompuLab LTD.

4.7. CRT Interface - Video DAC

The SB-X270 implements an interface to CRT monitor by Video DAC, which converts

digital data of CM-X270's TFT output to analog RGB signals. Horizontal and vertical

synchronization signals are also generated from the TFT interface. All CRT interface

signals are routed to CRT connector P24 and FPC connector P31 as described in chapter 3.

4.8. Front Panel

The unique mechanical design of the SB-X270 allows selecting between two popular form

factors – either a standard PC/104+ with headers or an extended PC/104+ with front panel

connectors.

The SB-X270 printed circuit board has an extension used for the assembling of standard

connectors - two Ethernet ports, serial port, two USB ports and CRT monitor. If a front

panel is not required, this extension can be removed, either before assembling or even on

an already assembled card. If the front panel is removed, the SB-X270 remains fully

functional while the functions of front panel connectors are available through FPC

connectors P31 and P11.

Instructions for front panel removal

If you have the board with front panel and you need to remove it, follow these steps:

1. The board has the v-groove cut lines along the front panel, on the both sides of PCB.

Deepen these cut lines using sharp knife. Exert significant pressure. Be careful not to

hurt yourself !

2. Fix the front panel (the part to be removed) in carpentry vice.

3. Gently push the board backward and forward until it breaks along the cut line.

Note: trace wiring inside the PCB are designed to support this method of front panel

removal.

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CompuLab SBC-X270 Bedienungsanleitung Seite 37