Measurement-computing Digital488 Manual de usuario descargar pdf (Pagina 45)

Section 3 Command Descriptions

3.15

F3 Number Decimal Equiv

000 0 008 8

001 1 009 9

002 2 010 10

003 3 020 20

004 4 100 100

005 5 200 200

006 6 210 210

007 7 255 255

Data received for output to the digital ports must be contained within a prefix (

)

and a suffix (

). If the amount of data sent is less than the number of bits programmed as

outputs, the least-significant bits will contain the data sent and the most-significant bits

will be cleared to logic zero. If the data sent is greater than the number of bits

programmed for output or selected by the

command, the

Digital488

will generate a

conflict error and ignore the entire command string. The

Data Strobe

output is pulse for

approximately 50 microseconds after new data is output on the selected port(s).

When the

Digital488

is addressed to talk (

) it asserts

Inhibit

, reads the data

from all ports, unasserts

Inhibit

and outputs the number of characters determined by the

and

commands. Leading zeros are not suppressed and the bus terminators are

appended to the output. After output the

Digital488

must be re-addressed to talk to

perform subsequent reads.

EDR

(

) may also be used to capture data in this format.

Example:

OUTPUT 718;"F3X"

select decimal mode

ENTER 718; A$

read data from the

Digital488

DISP A$

display shows

240;165

OUTPUT 718;D100;200ZX

output

100

200

to the

Digital488

ENTER 718; A$

read data from the

Digital488

DISP A$

display shows

100;200

1 2 ... 40 41 42 43 44 45 46 47 48 49 50 ... 82 83

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Measurement-computing Digital488 Manual de usuario Pagina 45

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