Keysight N432A Programming Manual page 307

MEMory[:METer][1]:FREE[:ALL]?
This query returns the amount of free memory space for sensor calibration tables,
frequency-dependent offset tables, and save/recall registers. The response format
is:
<bytes_available>,<bytes_in_use>
Syntax
Example
MEM:FREE?
Keysight N432A Programming Guide
MEM
:MET
Queries the total amount of free memory space.
:FREE
1
MEMory Subsystem
:ALL ?
10
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