PK202-25 Matrix Orbital, PK202-25 Datasheet - Page 6

• Manufacturer Part Number: PK202-25
• Description: LCD Character Display Modules Black Background Yel/Grn Text
• Manufacturer: Matrix Orbital
• Series: PK202-25r

Specifications of PK202-25

• Character Count X Line: 20 x 2
• Module Size (w X H X T): 116 mm x 37 mm x 25.73 mm
• Background Color: Black
• Backlight Type: LED Yellow / Green
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

1.3 Keypad Interface
out the RS-232 or I
any aspect of the operation of the display, which acts simply as a matrix to serial converter. To use the
keypad to control the display, the controller must be programmed accordingly.
1.4 Setup for Testing
If not equipped with a dual bay PC mounting kit, the following will be required;
Matrix Orbital
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
3. Connect the display to the PC using the serial cable and adapter if required. Make sure the RS-232
The keypad interface takes row / column input and converts it to ASCII characters, which are delivered
Before setting up the application the user may want to try out the display. This is easily done with a PC.
• A 4-pin power connector of the type used to connect 3.5" floppy drive. Take care not to connect the
• 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.
display to an unmodified spare power connector in a PC.
BLACK lead to GND.
cable includes the required ground lead. There must be no voltage differential between the RS-232
ground and the power supply ground.
NOTE The Manufacturer’s Warranty becomes void if the unit is subjected to over-voltage
or reversed polarity.
2
C port to the associated controller. Note that the keypad is not used to directly control
Figure 1: Connections for Testing
PK202-25
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