Measurement-computing Serial488A Manuel d'utilisateur télécharger pdf (Page 16)

2.6

Note that the

Serial488A

comes configured as an IEEE controller. In this mode

the

Serial488A

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

Section 3

The

Serial488A

may also be configured as an IEEE peripheral. As an IEEE

peripheral, the

Serial488A

allows an IEEE controller to communicate with an RS-232

device. The peripheral mode of operation is described in detail in

Section 4

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

power supply from the AC line and from the interface. Disconnect any IEEE or serial

cables prior to disassembly.

WARNING

Never open the Serial488A case while it is

connected to the AC line. Failure to observe this

warning may result in equipment failure,

personal injury or death.

Place the interface upside down on a flat surface. Remove the four (4) screws

located near the rubber feet. Return the interface to the upright position and carefully

remove the top cover. Modify those parameters which are appropriate for your

installation and then carefully re-assemble the interface using the reverse of the

procedure described.

2.3 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.

2.3.1 Serial Baud Rate Selection

Baud rate defines the number of serial 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 57600 baud (110 to 19200 for the

Serial488/512K

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Measurement-computing Serial488A Manuel d'utilisateur Page 16