HP FS-8000C manual RS-232C Cable Connection, Preparing an RS-232C Cable

B.4 RS-232C Cable Connection

B.4 RS-232C Cable Connection

B.4.1 Preparing an RS-232C Cable

After you procure an RS-232C cable, check its wiring against the pin assignments shown in page section B.1.2 Interface Signals on page B-3. If you have an IBM communications adapter cable type 1502067, use the procedure below to solder the wiring at the end (printer side) of the cable:

1	Unscrew the plastic cover at the end (printer side) of the cable.
2	A bare shield wire is provided for each wire in the cable. Solder all shield wires
	together into a single bundle.
3	Connect the bundled shield wires to the connector metal face using a piece of flat
	cable about 3 mm wide and 15 mm long,. Make sure that the soldered connections
	are secure.
4	Unsolder wires 2 and 3, then resolder them in a crossover configuration. In other
	words, solder wire 2 to pin 3 and wire 3 to pin 2. Cover the solder joints with a
	thermofit tube.
5	Cut wires 4, 5, 6, and 20.
6	Solder wires 5 and 6 together and connect them to pin 20. Cover the solder joints
	with a thermofit tube. Leave wire 4 unconnected.

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8

Tape all remaining loose ends together, or seal them with a thermofit tube.

Screw the plastic cover back on the cable end.

B.4.2 Connecting the Printer to the Computer

Make sure that both computer and printer are powered off.

1	Discharge static electricity from your body by touching a metal object such as a
	doorknob.
2	Plug the end (printer side) of the RS-232C cable into the printer's serial interface
	connector and screw it on securely.

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4

5

Plug the other end of the cable into the computer’s serial interface connector.

Power on the printer.

The printer’s parameters are set at the factory as follows:

Baud rate = 9600 bps, data bits (character length) = 8, stop bits = 1, parity = none

The two RS-232C protocols are XON/XOFF and DTR. The printer executes both of these protocols simultaneously, using positive logic for DTR.

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