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G-6
IEEE-488 and SCPI Conformance Information
Model 6485 Picoammeter Instruction Manual
NDAC hold-off
NDAC hold-off is included with the GPIB 488.1 protocol mode to allow a single instru-
ment to hold off all others on the bus until it is finished executing a command. The follow-
ing command controls NDAC hold-off:
SYSTem:MEP:HOLDoff ON | OFF
The default is OFF, but NRFD hold-off will still be enabled and will prevent an instrument
from accepting further commands. See
for the complete IEEE-488 handshake
sequence.
Figure G-1
IEEE-488 handshake sequence
DATA
DAV
SOURCE
SOURCE
VALID
ALL READY
ACCEPTOR
NRFD
NDAC
ALL ACCEPTED
ACCEPTOR
Содержание 6485
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Страница 44: ...1 20 Getting Started Model 6485 Picoammeter Instruction Manual ...
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Страница 164: ...11 6 Common Commands Model 6485 Picoammeter Instruction Manual ...
Страница 165: ...12 SCPISignalOriented MeasurementCommands ...
Страница 190: ...14 12 SCPI Reference Tables Model 6485 Picoammeter Instruction Manual ...
Страница 214: ...16 14 Calibration Model 6485 Instruction Manual ...
Страница 219: ...A Specifications ...
Страница 221: ...B StatusandErrorMessages ...
Страница 227: ...C GeneralMeasurement Considerations ...
Страница 233: ...D DDCEmulationCommands ...
Страница 247: ...E ExamplePrograms ...
Страница 250: ...E 4 Example Programs Model 6485 Picoammeter Instruction Manual ...
Страница 251: ...F IEEE 488BusOverview ...
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