IEEE488.2 Common Order 
  Copyright © Itech Electronic Co., Ltd.  40 
Parameter 
1 to 71 
*TST? 
This  command  is  used  to  query  the  result  of  the  instrument  self-test.  0 
represents a successful self-test while other returned parameters means failure. 
What’s  more,  the  instrument  will  generate  error  information  explaining  the 
cause of the failure.   
Order syntax 
*TST? 
Parameter 
None 
Returned parameter 
<NR1> 
STATus:QUEStionable[:EVENt]? 
This order can read the parameter from quest event register. The power supply 
will return a decimal number which is corresponding to the binary weighted sum 
of each bit of the register, these bits have been latched. After executing, quest 
event register is reset. 
Quest syntax 
STATus:QUEStionable[:EVENt]? 
Parameter 
None 
Return parameter 
<NR2> 
Reference order 
STATus:QUEStionable:ENABle 
 
Bit determination of quest event register: