Matrix-orbital VK204-25 Legacy Manual do Utilizador descarregar pdf (Página 5)

1.4 Setup for Testing

Before setting up the application the user may want to try out the display. This is easily done with a PC.

If not equipped with a dual bay PC mounting kit, the following will be required;

• A 4-pin power connector of the type used to connect 3.5" ﬂoppy drive. Take care not to connect the

display to an unmodiﬁed spare power connector in a PC.

• A 5V power supply.

• A PC with a spare RS-232 port (COM1 or COM2).

• A 9 or 25 pin RS-232 serial cable. If using a 25 conductor cable, a 9 to 25 pin adapter will be required.

Figure 1: Connections for Testing

1. Refer to the Figure above 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.

NOTE The Manufacturer’s Warranty becomes void if the unit is subjected to over-voltage

or reversed polarity.

3. Connect the display 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+. Turn on the power: the display

should come on.

1.5 Trying Out the VK204-25

The unit should be connected to power. The PC and display should be on. To experiment with typing

text, run a PC terminal program, such as Hyperterm. Make sure it’s conﬁgured to use the correct port. Set

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Matrix-orbital VK204-25 Legacy Manual do Utilizador Página 5