KEPCO EL Series Electronic Load Operator Manual P/N 243-1295 Firmware Version 3.87 to 3.xx - Manual (Page 66)

B-4
SERIES EL 022013
B.12 [SOURce:]INPut:CUToff:TIME? QUERY
INP:CUT:TIME?
Syntax: Short Form: [SOURce:]INP:CUT:TIME? Long Form: [SOURce:]INPut:CUToff:TIME?
Returns = .0000 to 9999.000 (seconds)
Description: Returns time (in milliseconds) established by INP:CUT:TIME (PAR. B.11). This is the time to wait
before changing input from disabled to off.
B.13 [SOURce:]INPut:CUToff:VOLTage COMMAND
INP:CUT:VOLT
Syntax: Short Form: [SOURce:]INP:CUT:VOLT
Long Form: [SOURce:]INPut:CUToff:VOLTage
where = minimum input voltage (Volts)
Description: Establishes a minimum input voltage required for engaging the load. Figure B-1 illustrates oper-
ation of INP:CUT:VOLT with INP:RAMP enabled. When input voltage drops below minimum input volt-
age, the input is disabled (set to 0 for current and conductance, set to maximum for voltage and
resistance), the LOAD indicator begins blinking green/amber and INP? returns 1,DIS (disabled). If the
voltage increases above minimum input voltage (B, Figure B-1) while the input is disabled, the load is
engaged, the output is enabled and returns to the previous setpoint, the LOAD indicator changes to
steady amber and INP? returns 1 (on).
The input will stay in the disabled state until input voltage recovers, or the LOAD switch is pressed to
disengage the LOAD. If INP:CUT:TIME (see PAR. B.11) is implemented, the input will be automatically
set to off if the input voltage has not recovered when the input cutoff time expires.
FIGURE B-1. TIMING FOR INP:RAMP WITH INP:CUT:VOLT
If input voltage from the UUT (unit under test) is subsequently lost, the output is disabled (all FET’s are
off). When input voltage recovers, the input changes from a short to the proper setpoint in a time
determined by the INP:RAMP or SYST:RAMP commands, Pressing the LOAD switch disengages the
load (all FET's off), the LOAD indicator turns green and sending INP? returns 0 (disengaged).
B.14 [SOURce:]INPut:CUToff:VOLT? QUERY
INP:CUT:VOLT?
Syntax: Short Form: [SOURce:]INP:CUT:VOLT? Long Form: [SOURce:]INPut:CUToff:VOLTage?
Returns = minimum input voltage (Volts)
Description: Returns the value of minimum input voltage set by INP:CUT:VOLT (see PAR. B.13).
INPUT STATE
(LOAD SWITCH)
LOAD
INDICATOR
OUTPUT
(CURRENT OR
CONDUCTANCE)
INPUT
VOLTAGE
A = TIME DETERMINED BY INP:RAMP
B = VALUE DETERMINED BY INP:CUT:VOLT