B&K Precision 4052-4055 - Programming Manual - Manual (Page 9)

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1.3.3 IDN
DESCRIPTION The *IDN? Query causes the instrument to identify itself. The response
comprises manufacturer, model number, serial number, software version
and firmware version.
QUERY SYNTAX
*IDN?
RESPONSE FORMAT *IDN ,,,
number>,,,
：=“BK Precision” is used to identify instrument.
:= A model identifier less than 14 characters.
:= A nine- or 10-digit decimal code .
:= A serial numbers about software version.
:= two digits giving the major release level followed
by a period, then one digit giving the minor release level followed by a
period and a single-digit update level (xx.y.z).
EXAMPLE 1
Reads version information.
*IDN?
return:
*IDN BK Precision,4054,00-00-00-13-22,1.01.01.10R1,20.234.3.