IEEE Port
PSI BOX Reference
CHAPTER 3
THE
IEEE 488
PORT.
Introduction.
____________
This chapter describes the IEEE488 port on the PSI BOX.
The IEEE488 port connector pin outs, the function of the DIP
switches and LEDs, how to set the controller mode and the
device addresses are all explained in detail.
Summary.
_________
The IEEE port provides TTL logic level signals. A
standard 24 way Amphenol IEEE 488 connector, with screw
locks for secure connections, is used. The IEEE plug is gold
plated and EMI shielded.
The IEEE port lines are implemented with the PSI BOX in
one of two modes.
1)
The PSI BOX may be an IEEE peripheral, here, the ATN,
IFC and REN lines are under control from an IEEE
computer and the SRQ line is shared by the PSI BOX with
all the other IEEE devices present.
2)
The PSI BOX may be the IEEE controller, here, the ATN,
IFC and REN lines being managed by the PSI BOX, and
the SRQ line is shared between any IEEE devices attached
to the PSI BOX.
Chapter 3
Page 25
Содержание P.S.I. BOX
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