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Agilent N518xA, E8663B, E44x8C, and E82x7D Signal Generators Programming Guide 325
Creating and Downloading User-Data Files
Save and Recall Instrument State Files
Save and Recall Instrument State Files
NOTE References to waveform files and some of the other data file types mentioned in the
following sections are not available for all models and options of signal generator. Refer to
the instrument’s Data Sheet for the signal generator and options being used.
The signal generator can save instrument state settings to memory. An instrument state setting
includes any instrument state that does not survive a signal generator preset or power cycle such as
frequency, amplitude, attenuation, and other user–defined parameters. The instrument state settings
are saved in memory and organized into sequences and registers. There are 10 sequences with 100
registers per sequence available for instrument state settings. These instrument state files are stored
in the USER/STATE directory. See also, “Signal Generator Memory” on page 281.
The save function does not store data such as Arb waveforms, table entries, list sweep data, and so
forth. The save function saves a reference to the waveform or data file name associated with the
instrument state. Use the store commands or store softkey functions to store these data file types to
the signal generator’s memory catalog.
Before saving an instrument state that has a data file or waveform file associated with it, store the
file. For example, if you are editing a multitone arb format, store the multitone data to a file in the
signal generator’s memory catalog (multitone files are stored in the USER/MTONE directory). Then
save the instrument state associated with that data file. The settings for the signal generator such as
frequency and amplitude and a reference to the multitone file name will be saved in the selected
sequence and register number. Refer to the signal generator’s User’s Guide, Key and Data Field
Reference, or the signal generator’s Help hardkey for more information on the save and recall
functions.
Save and Recall SCPI Commands
The following command sequence saves the current instrument state, using the *SAV command, in
register 01, sequence 1. A comment is then added to the instrument state.
*SAV 01,1
:MEM:STAT:COMM 01,1,"Instrument state comment"
If there is a waveform or data file associated with the instrument state, there will be a file name
reference saved along with the instrument state. However, the waveform/data file must be stored in
the signal generator’s memory catalog as the *SAV command does not save data files. For more
information on storing file data such as modulation formats, arb setups, and table entries refer to the
signal generator’s User’s Guide.
NOTE On the N5182A, E4438C, and E8267D, if a saved instrument state contains a reference to a
waveform file, ensure that the waveform file resides in volatile memory before recalling the
instrument state. For more information, see the User’s Guide.