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Keithley 6221 User Manual

Keithley 6221
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Model 6220/6221 Reference Manual Getting Started 1-29
Return to Section 1 topics
SCPI programming
SCPI programming information is integrated with front panel operation throughout
this manual. SCPI commands are listed in tables and additional information that
pertains exclusively to remote operation is provided after each table.
Optional command words
In order to be in conformance with the IEEE-488.2 and SCPI standards, the Model
622x accepts optional command words. Any command word that is enclosed in
brackets ([]) is optional and need not be included in the program
message.
Query commands
Most command words have a query form. A query command is identified by the
question mark (?) that follows the command word. A query command requests
(queries) the programmed status of that command. When a query command is
sent and the Model 622x is addressed to talk, the response message is sent to
the computer.
NOTE Except for Section 14, most SCPI tables in this manual are
abridged to some degree. That is, they may NOT include
optional command words and most query commands.
Optional command words and query commands are sum-
marized as follows.
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Keithley 6221 Specifications

General IconGeneral
InterfaceGPIB, RS-232
Communication InterfaceGPIB, RS-232
Current Sourcing Accuracy±(0.03% of output + 20 pA)
Current Sinking Accuracy±(0.03% of output + 20 pA)
Output Resolution100 fA
Output Accuracy±(0.03% of output + 20 pA)
Power Requirements100 V to 240 V AC, 50/60 Hz

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