Measurement Computing Serial488/4 - Manual (Page 74)

Section 4 IEEE 488 Primer
4.3
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DIO1-8
DAV
NRFD
NDAC
IFC
ATN
SRQ
REN
EOI
To Other Devices
Device 1
System Controller
Able to Talk,
Listen, and Control
Device 2
DMM
Able to Talk
and Listen
Device 3
Printer
Only Able to Listen
Device 4
Frequency Counter
Only Able to Talk
Data Bus
Data Byte
Transfer
Control
General
Interface
Management
IEEE 488 Bus Structure
Figure 4.1