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9-2
Remote Operation
Model 6485 Picoammeter Instruction Manual
Selecting and configuring an interface
Interfaces
Model 6485 supports two built-in remote interfaces:
•
GPIB interface
•
RS-232 interface
You can use only one interface at a time. At the factory, the GPIB bus is selected. You can
select the interface only from the front panel. The interface selection is stored in non-vola-
tile memory; it does not change when power has been off or after a remote interface reset.
GPIB interface
— The GPIB is the IEEE-488 interface. Model 6485 must be assigned to
a unique address. At the factory the address is set to 14, but can be set to any value from
0 to 30. However, the address must not conflict with the address assigned to other instru-
ments in the system. You can use either the SCPI or DDC language to program the instru-
ment.
RS-232 interface
— When using the RS-232 interface, you must set baud rate, data bits,
parity, terminator and flow control. For the RS-232 interface, you can only use the SCPI
language to program the instrument.
Languages
For the GPIB interface, there are three programming languages to choose from:
•
SCPI language (488.2)
•
DDC language
•
488.1 language
NOTE
For the RS-232 interface, only the SCPI language can be used to program the
instrument. When the RS-232 interface is selected, it automatically defaults to
SCPI.
SCPI language
— Standard Commands for Programmable Instrument (SCPI) is fully
supported by the GPIB and RS-232 interfaces. Always calibrate Model 6485 using the
SCPI language.
DDC language
— Model 6485 implements most DDCs (device-dependent commands)
available in the Keithley Model 485 picoammeter. The available commands are provided
in
. See the Model 485 instruction manual for details on operation.
488.1 language
— See
for details.
Содержание 6485
Страница 1: ...Model 6485Picoammeter Instruction Manual A G R E A T E R M E A S U R E O F C O N F I D E N C E ...
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Страница 44: ...1 20 Getting Started Model 6485 Picoammeter Instruction Manual ...
Страница 66: ...3 6 Measurements Model 6485 Picoammeter Instruction Manual ...
Страница 138: ...9 20 Remote Operation Model 6485 Picoammeter Instruction Manual ...
Страница 159: ...11 CommonCommands ...
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 ...
Страница 266: ...F 16 IEEE 488 Bus Overview Model 6485 Picoammeter Instruction Manual ...
Страница 267: ...G IEEE 488andSCPI ConformanceInformation ...
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