Measurement-computing Digital232 Manual do Utilizador descarregar pdf (Página 22)

Section 2 Getting Started

2.14

into the unit. If the problem is unresolved, refer to the

Service Information

section

of this manual.

Connect a serial cable to the DB-25 connector on the rear of the

Digital232

Connect the other end of the cable to the serial host. Running a dumb terminal

program similar to that shown in Appendix C, type the following....

Reset the

Digital232

Request data from the

Digital232

The

Digital232

should respond with '

FFFFFFFFFF'

2.5 Errors

The

Digital232

has built-in error checking, to ensure that it has received valid

commands and data, and to alert the user if an inappropriate situation has occurred.

The front panel

Error

LED will illuminate when an error condition occurs, and will

remain lit until the status command

is received. The

Digital232

will continue to

operate after an error has occurred, but in the instance of an invalid command, the

command will not be executed and must be re-sent.

The

Service Request

command

can be used to automatically send an SRQ

message to the host whenever an error occurs. This is particularly helpful when first

configuring the system using a 'dumb terminal' program, as described for the IBM PC

in Appendix C. Refer to the

Status

command (

) for more information on error

codes.

1 2 ... 17 18 19 20 21 22 23 24 25 26 27 ... 58 59

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