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Matrix Orbital LK202-25 Legacy User Manual

Page 11

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Table 3: Connector Pinout

Pin 1

+5.0 VDC (+7 to +15 VDC with wide voltage option)

Pin 2

SDL (I

2

C clock), Rx

Pin 3

SCA (I

2

C data), Tx

Pin 4

Ground

2.1.2 Five Volt Modules

If the display is used in a PC it becomes tempting to plug a spare power connector into the unit.

Don’t

do this! Wiring for the PC power connector and that required for the display are different, as shown in the

Figure below.

Figure 4: Wiring for Five Volt Modules

Matrix Orbital can supply an adapter cable designed to use with the display when it’s installed in a PC.

The cable is wired as shown in the Figure below. Note that this cable does not provide connections for I

2

C.

Figure 5: 5 Volt Power Cable

Matrix Orbital

LK202-25

7

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