Download 13 BARR/SPOOL Operation
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A.3 Printer Cable Specifications for 25-Pin Serial Ports This type of printer cable is also called a null-modem cable. It has a D25 male connector that plugs into the printer, and a D25 female connector that plugs into the PC serial port. Printer (D25 Male) Name PRO-GND RXD TXD SIG-GND Pin 1 3 2 7 DTR 20 CTS DSR DCD 5 6 8 PC Serial Port (D25 Female) Pin Name 1 PRO-GND 2 TXD 3 RXD 7 SIG-GND 5 CTS 6 DSR 8 DCD 20 A.3 Printer Cable Specifications for 25-Pin Serial Ports DTR BARR/SPOOL 245