Advantech PPC-120, PPC-140 Audio Interface, Ethernet, Adjusting the LCD Contrast and Brightness

3.12 Audio Interface

The audio interface includes three jacks: microphone in, line out and line in. (See Fig. 3-5.) Their functions are:

Microphone in: Use an external microphone to record voice and sound.

Line out: Output audio to external devices such as speakers or earphones. The built-in speaker will not be disabled when the line out jack is connected to external audio devices.

Line in: Input audio from an external CD player or radio.

1.Connect the audio device to the system. (See Fig. 3-5.)

2.Install the driver before you use the device.

3.13Ethernet

External devices on your network may be connected to the system through the external ethernet port located on the rear side of the system unit.

1.Be sure the panel PC is turned off.

2.Connect the external device(s) to the panel PC. (See Fig. 3-4.)

3.Turn on the panel PC and the external device(s).

4.Under DOS, run the RSET8139 program to check the hardware network status before installing the Ethernet driver.

5.Run the Ethernet driver to connect up to the network.

3.14Adjusting the LCD Contrast and Brightness

The contrast control knob allows you to adjust the contrast of the LCD display panel. Only panel PCs with DSTN LCD displays have this function.

The brightness control knob allows you to adjust the brightness of the LCD display panel.

Chapter 3 Using the Panel PC 31