HP 8712C User Manual

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Automating Measurements
Automated Measurement Setup and Control
Using learn Strings to
The IEEE 488 *LRN (“learn”) command can also be used to set or query a
Save and Recall
complete set of instrument parameters. This can be used as a programming
Instrument States
convenience, eliminating the need for using disk files when saving and
recalling instrument states.
‘lb obtain the learn string containing the instrument state, use the command
*LRN? as follows:
10 DIM Statel$ C40001
20 OUTPUT (PRfna; “*LRN?”
30 ENTER (PRfna USING “-K”;Statel$
160 ‘I’Put the learn string back
170 OUTPUT ORfna;Statel$
Since *LRN?, by IEEE definition, only contains the actual instrument state,
exclusive of data traces and calibration arrays, the network analyzer provides
the command
SYST:SET:LRNLong?
This command saves the data traces and calibration arrays if they are
enabled under ( SAVE RECALL ] Define Saws or using the MMEM : STOR: STATE
SCPI commands. Using the *LRN command to set the instrument settings
takes about the same amount of time as recalling a file from disk using -
MMEM:LOAD:STATe.
For more details on learn strings, refer to “Example Programs” in the
Programmer’s Guide.
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HP 8712C Specifications

General

Brand	HP
Model	8712C
Category	Measuring Instruments
Language	English