MMEMory Subsystem - STATe and PREFerence Files
These MMEMory subsystem commands save and load instrument states (state files) and preferred settings
for non-volatile parameters (preference files). In general, state files store volatile settings associated with
measurements. Preferences are non-volatile parameters associated with the instrument, but not any spe-
cific measurement. The following table summarizes what information is in each file.
State File
Preference File
State Files for the 34460A/61A/65A/70A
have this information:
Active measurement function
Ranges
Integration time/resolution (NPLC)
Auto range
Auto zero
Auto impedance (Input Z)
AC bandwidth
Trigger and sample settings
Math settings (enables, null value(s), limits, …)
Data threshold for status bit
VM Comp slope (Voltmeter Complete)
Temperature units
Default file system directory
Display selection and settings (numeric, meter, his-
togram, trend chart, …)
Numeric front panel digit masking
DBM reference resistance
State Files for the 34465A/70A have this
additional information:
Binary/ASCII data format and byte order
Trend chart and histogram display settings
Data Log and Digitize mode settings
Temperature probe settings
Thermocouple reference junction offset adjust-
ment
Preference Files for the 34460A/61A/65A/70A
have this information:
I/O enables, addresses, settings; mDNS settings
Display brightness
Screen saver enable, brightness
Numeric separator (comma, space, none) and decimal
point symbol
Beeper and key click enable
Help language
Power-on status clear enable, status enables, transition
filters
Power-on state (*RST, user-defined, last)
SCPI ID (string returned by *IDN)
Power-on message text
Color Scheme (A/B)
Label enable, text
Preference Files for the 34465A/70A have this
additional information:
Data Log mode file format settings
Thermocouple reference junction offset adjustment
The MMEMory subsystem also includes two other types of commands:
General Purpose File Management
SCPI Programming Reference
296
Keysight True
volt
Series Operating and Service Guide
