Because the counter uses a small amount of space in the flash file system for internal
use, the <mem_used> value will not be zero even if no user files exist on the drive.
Examples
The following example returns a list of all state files in the folder MyData on the front panel USB storage
device.
MMEM:CAT? "USB:\MyData"
Typical Response: +1000000000,+327168572,"MyFreqMeas.sta,STAT,8192"
See Also
MMEMory:CATalog:ALL?
MMEMory:CDIRectory
MMEMory:STORe:STATe
MMEMory:CATalog:STATe?
294 Keysight 53220A/53230A Programmer's Reference