Formats and Data Flow 7
Keysight 53220A/53230A User’s Guide 275
In addition to the list of files, the commands also provide the total amount of 
memory used and the total amount of memory available (free) on the specified 
drive.
MMEMory:CATalog[:ALL]? [<“folder”>] 
MMEMory:CATalog:DATA? [<“folder”>]
MMEMory:CATalog:STATe? [<“folder”>]
The folder parameter format is drive:path. drive is either INT (internal flash 
memory) or USB (external memory device). path is an absolute path and folder 
name beginning with \. If a folder is not specified, the contents of the specified 
current folder (MMEMory:CDIRectory) or the contents of the drive’s root directory 
are returned.
The format of the data returned is: 
<total memory used>, <total memory free>, <“file listing”> 
“file listing” with quotes (““) included is further separated into:
“<file name>, <file type>, <file size>” 
Memory used, memory free, and file size are given in bytes. Examples of what the 
individual CATalog commands might return for a folder on an external USB 
memory device containing a sub-folder plus a .csv data file, a .dat data file, and a 
state file are given as follows:
MMEMory:CATalog[:ALL]?
253657088,519798784,"data1.csv,ASC,12500","state1.sta,STAT,860","data2.
dat,BIN,1600","dut_a,FOLD,0"
MMEMory:CATalog:DATA?
253657088,519798784,"data1.csv,ASC,12500","data2.dat,BIN,1600"
MMEMory:CATalog:STATe?
253657088,519798784,"state1.sta,STAT,860"