Measurement-computing Analyzer488 Manual do Utilizador descarregar pdf (Página 229)

Section 6 Instrument Simulator

6.19

End of Reading EOI Jn

The End Or Identify (EOI) line is one of five bus management lines on the IEEE

488 Bus. It is used by a talker to indicate the end of a multiple byte transfer sequence.

The controller can change the End of Reading EOI mode by programming the

Analyzer488 from the bus. A reading is a single data point and a waveform (any

factory waveform from 0 to 20) is made up of 256 readings. The End of Reading EOI

command allows the Analyzer488 to assert or not assert the EOI line when the last byte

of each reading is sent to the controller.

In the

mode, the EOI line is asserted by the Analyzer488 on the last byte of

every reading. In the

mode the EOI line is not asserted by the Analyzer488.

SYNTAX:

EOI enabled, assert EOI on end of reading

EOI disabled, do not assert EOI on end of reading

(default)

Return current End of Reading EOI selection

EXAMPLES:

PRINT#1,"OUTPUT10;J0X"

assert EOI on end of reading

PRINT#1,"OUTPUT10;J?"

query EOI mode

PRINT#1,"ENTER10"

request data

INPUT#2,A$

get data

PRINT A$ J0

is displayed on the front panel

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Measurement-computing Analyzer488 Manual do Utilizador Página 229