Direct Serial Cable Connection Sample Clauses

Direct Serial Cable Connection. An RS-232 serial interface cable can be used to connect the computer (PC) to a System 30 Timer. It must have a standard 9-pin female "D" connector at the timer end, and a 9-pin or 25-pin female "D" connector at the computer’s end (depending on whether a 9-pin or 25-pin serial input connector is available on your PC). ! It must be shielded to prevent interference. ! Maximum cable length should not exceed 150 ft. (45.72 meters) for reliable communication. ! It must be a crossover (null modem) cable (See diagram below). ! Pin connections for the cable wires must be as shown in Figure 4. Connect the cable directly from the computer to the timer unit as follows. Refer to Figure 5. ! Plug the 9-pin female connector on the interface cable into the connector on the bottom of the System 30 Timer. Tighten the screws to secure the connector to the unit. ! Plug the female 9-pin or 25-pin connector on the other end of the interface cable into the serial port connector on the back of the PC.