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PCI-1737U/PCI-1739U User Manual 18

Chapter 3 Signal Connections

Maintaining signal connections is one of the most important factors in

ensuring that your application system is sending and receiving data cor-

rectly. A good signal connection can avoid unnecessary and costly dam-

age to your PC and other hardware devices. This chapter provides useful

information about how to connect input and output signals to the PCI-

1737U/PCI-1739U via the I/O connector.

Figure 3.1: PCI-1737U Board Layout

CN1: IDC 50-pin header for digital input/output port A, B, and C

CN2: IDC 20-pin header digital input/output port A and B (optional)

CN3: IDC 20-pin header digital input/output port C (optional)

SW1: Port status setting (input/output) for PA0, PB0, PC0H and PC0L

SW2: Port output status setting (low/high)

SW3: BoardID switch (0~15)

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