Model 6485 Picoammeter Instruction Manual
IEEE-488 Bus Overview
F-7
These bus commands and their general purpose are summarized in
Table F-1
IEEE-488 bus command summary
Command
type
Command
State of
ATN
line
Comments
Uniline
Multiline
Universal
Addressed
Unaddressed
Common
SCPI
REN (Remote Enable)
EOI
IFC (Interface Clear)
ATN (Attention)
SRQ
LLO (Local Lockout)
DCL (Device Clear)
SPE (Serial Enable)
SPD (Serial Poll Disable)
SDC (Selective Device Clear)
GTL (Go To Local)
UNL (Unlisten)
UNT (Untalk)
—
—
X
X
X
Low
X
Low
Low
Low
Low
Low
Low
Low
Low
High
High
Set up devices for remote operation.
Marks end of transmission.
Clears interface.
Defines data bus contents.
Controlled by external device.
Locks out local operation.
Returns device to default conditions.
Enables serial polling.
Disables serial polling.
Returns unit to default conditions.
Returns device to local.
Removes all listeners from the bus.
Removes any talkers from the bus.
Programs IEEE-488.2 compatible
instruments for common operations.
Programs SCPI compatible instru-
ments for particular operations.
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Страница 219: ...A Specifications ...
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Страница 227: ...C GeneralMeasurement Considerations ...
Страница 233: ...D DDCEmulationCommands ...
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Страница 251: ...F IEEE 488BusOverview ...
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