Keithley 2790, Reference Manual

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Model 2790 SourceMeter
®
Switch System Reference Manual F-3
A typical setup for controlled operation is shown in Figure F-1 . Generally, a system will
contain one controller and a number of other instruments to which the commands are
given. Device operation is categorized into three operators: controller, talker, and listener.
The controller controls the instruments on the bus. The talker sends data while a listener
receives data. Depending on the type of instrument, any particular device can be a talker
only, a listener only, or both a talker and listener.
Figure F-1
IEEE-488 bus configuration
Device 1
able to talk,
listen, and
control
(computer)
Device 2
able to talk
and listen
(2790)
Device 3
only able to
listen
(printer)
Device 4
only able to
talk
DAV
NRFD
NDAC
IFC
ATN
SRQ
REN
EOI
Data Bus
Data Byte
Transfer Control
General Interface
Management
DIO 1–8 Data
(8 Lines)
Handshake
Bus
Management
To Other Devices