IEEE-488 Commands 
  Copyright©  Itech Electronics Co., Ltd.  111
*ESR? 
This command can read the value of standard event status register. After 
executing  this  command,  standard  event  status  register  is  reset.  Bit 
definition  of  standard  event  status  register  is  as  the  same  as  the 
standard event status enable register. 
Query syntax 
*ESR? 
Arguments 
None 
Returns 
<NR1> 
Related Command 
*CLS    *ESE    *ESE?    *OPC 
*IDN? 
This command can  read  information  about power supply.  The returns 
parameter contains 4 segments divided by comma. 
Query syntax 
*IDN? 
Arguments 
None 
Returns 
<AARD> segment description 
Example 
ITECH,IT6522C,601234567890123456,1.03-1.02 
*OPC 
When  all  commands  before  this  command  are  executed,  bit  OPC  in 
standard event register will be set to 1. 
Command syntax 
*OPC 
Arguments 
None 
Query syntax 
*OPC?