Matrix Orbital LK162-12 Legacy User Manual

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LK162-12 rev 4

?? A power cable with a 4 pin connector (same connector as used to connect 3.5 inch floppy

drive). Do not connect the LK162-12 to an unmodified spare power connector in a PC. To
modify such a cable see section 2.1.1.

?? A 5 V power supply.
?? a PC with a spare RS-232 port (COM1 or COM2).
?? A 9 or 25 pin RS-232 serial cable. If you use a 25 conductor cable you'll also need a 9 to 25 pin

adapter.

Figure 1-1 Connections for Testing

1. Refer to the diagram above and Figure 2-1 for the following steps.

2. Wire the connector to the power supply. On most connectors the RED lead will go to +5V and the

BLACK lead to GND. See Section 2.1.1 for details.

Note: The manufacturer's warranty is void if the unit

is subjected to over-voltage or reversed polarity.

3. Connect the LK162-12 to the PC using the serial cable and adapter if required. Make sure the RS-232

cable includes the required ground lead. There must be no voltage differential between the RS-232
ground and the power supply ground.

4. Connect the power connector, making sure that the +5V goes to V+ as shown in Figure 2-2. Turn on the

power: the LCD backlight should come on.

Now you're ready to try it out.

1.5 Trying Out your LK162-12

The unit is connected to power and the PC and the backlight is on. You should see a blinking cursor in the
top left corner of the display. You're ready to make sure it's working properly. To experiment with typing text,
run a PC program, such as Display Tuner or AlphaDemo. Make sure it's configured to use the correct port.
Set the baud rate to 19,200.

If you want to exercise some of the other features of the LCD2041 you'll need to write a program (in any
convenient language such as Basic or C) to issue the required command strings. Most terminal programs are
unable to issue the 0xFE character needed as a command prefix. You probably won't need to do this at the
initial testing stage.

If you've reached this point and operation is normal, you can be confident that your LCD2041 works
properly.