Black Box IC026A-R2, IC026AE-R2 manual Serial Port Settings

RS-232↔IEEE 488 INTERFACE CONVERTER

Note that the interface converter comes configured as an IEEE controller. In this mode, the interface converter is designed to allow an RS-232 computer to communicate with an IEEE peripheral such as a plotter. This controller mode is described in detail in Chapter 4.

The interface converter may also be configured as an IEEE peripheral. As an IEEE peripheral, it allows an IEEE controller to communicate with an RS-232 device. The peripheral mode of operation is described in detail in Chapter 5.

To modify any of these defaults, follow this simple procedure:

1.Disconnect the power supply from the AC line and from the interface. Also disconnect any IEEE or serial cables.

WARNING

Never open the interface converter’s case while it is connected to the AC line. Failure to observe this warning may result in equipment failure, personal injury, or death.

2.Place the interface converter upside down on a flat surface. Remove the four screws located near the rubber feet.

3.Return the interface converter to the upright position and carefully remove the top cover.

4.Change whichever DIP-switch settings you need to change.

5.When you have made all your changes, reverse this procedure to reassemble the interface converter.

3.3 Serial Port Settings

The first parameters to configure are those that correspond to the RS-232 port. These include baud rate, word length, number of stop bits, parity selection and type of RS-232 handshake. Each of these are described in the following sections.

3.3.1SERIAL BAUD RATE

The “baud rate” is the number of serial data bits per second transferred into and out of the RS-232 interface. SW1-1 through SW1-4 determine the serial baud rate. The factory-default baud rate is 9600 baud. Baud rates may be selected from 110 to 57,600 baud. Refer to the following diagram for specific baud rates.

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