Example: Individual Phase Loss Test 
The following command sequence will drop the output of phase A only for 10 cycles at 400 
Hz. 
/* Set up sequence 
VOLT 115;FREQ 400  Set output voltage to 115 V at 400 Hz (all phases) 
INST:COUP 0  Uncouple output phases 
INST:NSEL 1  Select phase A 
OUTP 1  Close output relay 
OUTP:STAR:STAT 1  Enable start phase mode 
OUTP:STAR:PHAS 90  Set start phase angle to 90 degrees on phase A 
OUTP:DROP 0.025  Drop for 25 ms (10 cycles @ 400 Hz) 
Output drop status query 
The status of a drop in progress can be queried using the query format of the OUTP:DROP 
command.  This query will return a <Bool> indicating if the output time specified has expired 
(0) or the drop is still in progress  (1). 
 
Command Syntax  OUTPut:DROP <NRf> 
Parameters  <NRf> | none 
*RST Value  none 
Examples  OUTP:DROP 0.001 
Query Syntax  OUTP:DROP? 
Returned Parameters  0 | 1 
Related Commands  OUTP:STAR:STAT  OUTP:STAR:PHAS  INST:COUP 
INST:NSEL