Interfaces - Keithley 2182 User Manual

Selecting and configuring an interface

Interfaces

The Model 2182 Nanovoltmeter supports two built-in remote interfaces:
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•
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-volatile
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. The Model 2182 must be assigned
to a unique address. At the factory the address is set to 07, but can be set to any value from 0 to
30. However, the address must not conflict with the address assigned to other instruments in the
system. You can use either the SCPI or 182 language to program the instrument.
RS-232 interface — When using the RS-232 interface, you must select baud rate, terminator,
and flow control. For the RS-232 interface, you can only use the SCPI language to program the
instrument.
NOTE
Languages
For the GPIB interface, there are two programming languages to choose from:
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•
NOTE
SCPI language — Standard Commands for Programmable Instrument (SCPI) is fully
supported by the GPIB and RS-232 interfaces. Always calibrate the Model 2182 using the SCPI
language.
182 Language — The Model 2182 implements most commands (DDCs) available in the
Keithley Model 182 Sensitive Digital Voltmeter. The commands (along with programming
limitations) are provided in
NOTE
GPIB Interface
RS-232 Interface
When changing the interface (GPIB to RS-232, or vice versa), all data in the buffer
clears.
SCPI Language
182 Language
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.
Appendix
The 182 Language is intended to be used only over the IEEE-488 bus. Using front
panel controls in conjunction with this language may cause erratic operation. In this
case, results cannot be guaranteed.
D. See the Model 182 Instruction Manual.
Remote Operation 11-3