Operation  Sorensen SGI Series 
3-28  M550221-01 Rev U 
2.  After  programming  a  step,  navigate  to  the  step-number  location  on  the 
screen and scroll to the next step number to be programmed. 
3.  Once at the next step number to be programmed, start again by choosing an 
operation for that step and continue as described above. 
4.  At the end of the sequence or to abort the sequence, press either the Escape 
key or Menu to jump to the Save screen.  F1 (Yes) saves the sequence (in 
non-volatile  memory)  and  returns  to  main  Sequence  Menu.    F4  (No)  will 
retain the current changes only until the power supply is turned off. The next 
power on restores the sequence to its previous condition. 
The following are descriptions for each sequence operation: 
NOP, No Operation: Used as a placeholder in the test 
sequence, no values are changed during this step, and it 
does not add time to the sequence. 
V/I Mode,  Voltage/Current Mode: This operation sets 
the voltage, current and OVP to the programmed values 
for  the  set  period  of  time  during  the  sequence  step.  
Navigate  to  each  editable  item  to  input  values  for 
Voltage, Current, Overvoltage Protection and duration. 
Ramp V, Ramp Voltage: This operation allows the user 
to ramp the output voltage from an initial, or start, value 
(Vi)  to  a  final,  or  stop,  value  (Vf)  over  the  time  period 
specified.  Internally the unit uses Vi, Vf and the time to 
calculate an appropriate ramp function to drive the output 
during the test  step.   Use the NavPad to set  the OVP, 
initial  Voltage  (Vi),  final  Voltage  (Vf),  Current  limit,  and 
duration. 
Ramp I, Ramp Current: This operation allows the user 
to ramp the output current from an initial, or start, value 
(Ii)  to  a  final,  or  stop,  value  (If)  over  the  time  period 
specified.  Use the NavPad to set the OVP, initial Current 
(Ii), final Current (If), Voltage limit, and duration. 
CP  Mode,  Constant-Power  Mode: This  operation  is 
similar  to  the  V/I  Mode,  except  it  sets  the  supply  in  a 
constant-power  mode  (See  Section  3.8.5).  Use  the 
NavPad  to  input  values for  OVP,  Voltage  limit,  Current 
limit, Constant Power setting and duration.