User guide

Data Ports

Serial Port

57516L-001 Rev. 1 10/12/2004 170PAX4 User Guide 121

Modem Connection

When the print engine is connected via its RS-232 interface to Data Communication

Equipment (DCE) such as a modem, use a standard RS-232 (straight-through) interface cable.

Figure 54 shows the connections required for this cable.

Figure 54 • RS-232 Connections

DTE

(Printer)

DCE

(Modem, etc.)

RXD (receive data)

TXD (transmit data)

DTR (data terminal ready)

SG (signal ground)

DSR (data set ready)

RTS (request to send)

CTS (clear to send)

+5 VDC signal source

NOTE: Pin 1 is unused and unterminated at the printer.