KEPCO EL Series Electronic Load Operator Manual P/N 243-1295 Firmware Version 4.00 to 4.xx - Manual (Page 73)

SERIES EL 071414
B-5
If input voltage from the UUT (unit under test) is subsequently lost, the output is shorted (all FET’s are
on). When input voltage recovers, the input changes from a short to the proper setpoint in a time
determined by the SYST:DAMP command, the source capabilities of the UUT and the cabling
between the load and the UUT. To maintain a ramp and eliminate any overshoot, ensure that
INP:CUT:VOLT is set to some value to enable the ramp on this condition. Pressing the LOAD switch
disengages the load; the LOAD indicator turns green and sending INP? returns 0 (disengaged).
See PAR. 3.15 and Figure 3-7 for details about how this command functions.
B.16 INPut:RAMP? QUERY 
INP:RAMP?
Syntax: Short Form: INP:RAMP? Long Form: INPut:RAMP?
Returns = time (0 to 2,000 msec)
Description: Returns the ramp time established by INP:RAMP. This is the time needed to reach setpoint value
after the load is engaged.
B.17 [SOURce:]INPut:PROTection:CLEar COMMAND 
INP:PROT:CLE
Syntax: Short Form: [SOUR:]INP:PROT:CLE Long Form: [SOURce:]INPut:PROTection:CLEar
Description: Resets protection from overcurrent, overpower, etc.
B.18 [SOURce:]INPut:PROTection:SHORt[:STATe] COMMAND 
INP:PROT:SHOR
Syntax: Short Form: [SOUR:]INP:PROT:SHOR[:STAT]
Long Form: [SOURce:]INPut:PROTection:SHORt[:STATe]
Description: Applies maximum drive to FETs, effectively shorting the input.
B.19 [SOURce:]OUTPut[:STATe] COMMAND 
OUTP
Syntax: Short Form: [SOUR:]OUTP[:STAT] Long Form: [SOURce:]OUTPut[:STATe]
where = 0 or OFF (load disengaged) or 1 or ON (load engaged)
Description: Used to engage or disengage the load from the UUT. When set to 1 the load engages, when set to
0 the load disengages.
B.20 [SOURce:]OUTPut[:STATe]? QUERY 
OUTP?
Syntax: Short Form: [SOUR:]OUTP[:STAT]? Long Form: [SOURce:]OUTPut[:STATe]?
Returns = 0 or OFF (load disengaged) or 1 or ON (load engaged)
Description: Indicates whether load is engaged or disengaged from the UUT. When set to 1 the load is
engaged, when set to 0 the load is disengaged.
B.21 [SOURce:]OUTPut:PROTection:CLEar COMMAND 
OUTP:PROT:CLE
Syntax: Short Form: [SOUR:]OUTP:PROT:CLE Long Form: [SOURce:]OUTPut:PROTection:CLEar
Description: Resets protection from overcurrent, overpower, etc.
B.22 [SOURce:]OUTPut:PROTection:SHORt[:STATe] COMMAND 
OUTP:PROT:SHOR
Syntax: Short Form: [SOUR:]INP:PROT:SHOR[:STAT]
Long Form: [SOURce:]INPut:PROTection:SHORt[:STATe]
Description: Applies maximum drive to FETs, effectively shorting the output.