Black Box SW555A Manual do Utilizador descarregar pdf (Página 12)

CHAPTER 3: Installation

The four switched ports, A through D, are wired DCE (output data on pin 3, RD).

The master port is wired as DTE. To directly connect a terminal device to the

master port, you need a null-modem cable (see Figure 3-2).

Figure 3-2. Null-modem connection.

Control leads required vary from device to

device. Consult your device’s operations

manual for details on your specific needs.

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Black Box SW555A Manual do Utilizador Página 12