Advertisement
2) TALKER. A device capable of transmitting data to other devices. Typical talkers
are voltmeters,counters, audio analyzers and many other measurement instruments.
3) CONTROLLER. A device capable of managing communications over the IEEB-488
bus such as addressing and sending commands. A PC with the IEEE-488 interface is
typically a controller.
An IEEE-488 bus system allows only one device at a time to active talker, but it
allows multiple listeners receiving the same data at the same time. Only one controller
can be active at a time.
An IEEE-488 bus has 24 lines including 7 ground return lines and one shield line. The
16 lines with signals are 8 data lines, 3 handshake lines and 5 management lines.
The IEEE-488 standard uses 24 pin ribbon connector as the standard and the signal
assignment is :
DATA
Lines Pin No.
----------------------------------
DIO1
1
DI02
2
DI03
3
DI04
4
DI05
13
DI06
14
DI07
15
DI08
16
6 6
PCL-848AB
MANAGEMENT Lines
-------------------------------------------------
IFC
REN
ATN
SRQ
EOI
HANDS8AKE Lines
-------------------------------------------------
DAV
NRFD
NDAC
User's Manual
Pin No.
9
17
11
10
5
Pin No.
6
7
8
Advertisement
