Series 2268 850 Watt DC Power Supplies Reference Manual
SCPI Command Reference
2268S-901-01 Rev. A / January 2015
219
The following punctuation is not sent with the command string:
•
Braces
({ }), or curly brackets, identify a selection of choices. Choose one of the
enclosed values.
•
Vertical bars, or pipes,
( | ) can be read as “or” and is used to separate the choices
found within the braces.
•
Angle brackets
( < > ) identify where specific values must be entered for a parameter.
For example, in the example at the top of the page, the parameter <current> appears in
the command string. To set the current set point to 0.1 A, the syntax is
CAL:CURR:LEV
0.1.
•
Square brackets
( [ ] ) identify optional parameters. If an optional parameter is not sent
with the command string, a default parameter is sent in its place.
Using Minimum and Maximum
In the following example, Minimum and Maximum are offered as alternative choices to
declaring a specific parameter value.
CAL:CURRent:LEVel {<current>|MIN|MAX}
The string CAL: CURR: LEV MIN sets the current calibration level to the minimum model
value.
Using Queries
A question mark lets you query the present value for most parameters. For example, to query
the current calibration state use:
CAL:SEC:STAT?
You can also use the following to query minimum and maximum allowed values for most
parameters:
:VOLT? MIN
:VOLT? MAX
Important:
If you send two queries, it is best to read and respond to the first
response before trying to read the second. Otherwise, you may receive an
incomplete first response followed by a complete second response. To avoid
this, you can either wait for and read the first response before sending the
second query, or send a device clear message before sending the second query.
Summary of Contents for Keithley 2268 Series
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