Matrix-orbital VK204-25 Legacy Manual de usuario descargar pdf (Pagina 8)

Table 2: Connectors & Functions

Connector Function

14 pin dual header General purpose outputs (6)

4 pin Power (5.0 VDC) and I

C commu-

nications

10 pin header Keypad

DB-9F RS-232 / Power

2.1.1 Power and I

C Connections

Power is applied via pins 1 and 4. 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 voltage to the DB-9 connector AND power connector

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

Connector pinout is as follows;

Figure 3: Power Connector

Table 3: Connector Pinout

Pin 4 Ground

Pin 3 SDA (I

C data)

Pin 2 SCL (I

C clock)

Pin 1 +5.0 VDC (+7 to +15 VDC with wide voltage option)

Matrix Orbital VK204-25 5

1 2 3 4 5 6 7 8 9 10 11 12 13 ... 37 38

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Matrix-orbital VK204-25 Legacy Manual de usuario Pagina 8