RIGOL  Chapter 2 Command System 
2-20  DP800 Programming Guide 
:MEMory[:STATe]:VALid? 
Syntax  :MEMory[:STATe]:VALid? {RSF|ROF|RTF|RDF},{1|2|3|4|5|6|7|8|9|10} 
Description  Query whether the specified storage location contains a valid file. 
Parameter 
Name  Type  Range  Default 
{1|2|3|4|5|6|7|8|9|10}  Discrete  1|2|3|4|5|6|7|8|9|10  None 
 
Explanation  The read and delete operations are only available when the specified storage 
location contains a valid file.   
Return Format  The query returns YES or NO. 
Example  :MEM:VAL? RSF,5 /*Query whether the state file storage location 5 contains a 
valid file and the query returns YES*/