Measurement-computing Parallel488 Manuale Utente Scaricare il pdf (Pagina 23)

Section 3 Parallel To IEEE Operation

3.5

10 ACKNLG

out The Parallel488 pulses this line low for

>5 µs after it has accepted a character

from the parallel device.

11 BUSY

out The Parallel488 sets this line low when

it can accept another parallel character. If the

buffer is full, this line is set high until

the buffer again has space.

12 PE

out Out of Paper signal. Not used. Always low.

13 SLCT

out Printer Select signal. Not used. Always high.

14 /AUTO

FEED

in When this line is low and the present

parallel character is a carriage-return,

the Parallel488 will add a linefeed

character to the IEEE data stream.

16 Logic

GND

Signal return.

30 Logic

GND

Signal return.

31 /INIT

in When a low pulse is received (>50 µs),

the buffer is cleared, Interface Clear (

IFC

) is

asserted for 100 µs, and the Listener

Address Group is sent on the IEEE bus.

32 /ERROR

out Off-Line signal. Not used. Always high.

33 Logic

GND

Signal return.

36 /SLCT

in Printer Select Input. Not used.

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Measurement-computing Parallel488 Manuale Utente Pagina 23