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2 Connections

2.1 Connector Pinout

Refer to the diagram below for this chapter.

Figure 3: Electrical Connections

The display has three connectors;

Table 2: Connectors & Functions

Connector Function

2 pin header General purpose output

4 Pin Power (Vdc) and I

C communications

DB-9F RS-232 / Power

2.1.1 Power and I

C Connections

Power is applied via pins 1 and 4 as shown in the Figure above. Power requirement is +5 VDC ±0.25V.

Power may also be supplied via the RS-232 connector as described in the next section.

WARNINGS

• Do not apply any power with reversed polarization.

• Do not apply any voltage other than the speciﬁed voltage.

• Do not use any cables other than the cables supplied by Matrix

Orbital, unless aware of the modiﬁcations required.

• Do not apply power to the DB-9 connector AND the 4 pin power

connector.

• Do not apply more than +5Vdc to pin #9 of the DB-9 connector.

Matrix Orbital LCD4041 4

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Matrix-orbital LCD/VFD Legacy Bedienungsanleitung Seite 7