KEPCO EL Series Electronic Load Operator Manual P/N 243-1295 Firmware Version 3.87 to 3.xx - Manual (Page 83)

SERIES EL 022013
B-21
B.107 SYSTem:RAMP? QUERY
SYST:RAMP?
Syntax: Short Form: SYST:RAMP? Long Form: SYSTem:RAMP?
Returns: = the larger of SYST:RAMP:POS and SYST:RAMO:NEG
Description: Indicates the larger of the positive and negative ramp times. For example, If SYST:RAMP:POS is
set to 10 and SYST:RAMP:NEG is set to 6, SYST:RAMP? returns 10.000.
B.108 SYSTem:RAMP:POSitive COMMAND
SYST:RAMP:POS
Syntax: Short Form: SYST:RAMP:POS Long Form: SYSTem:RAMP:POSitive
Where = positive ramp duration (Seconds) from 0.0001 to 10.000.
Description: Establishes the time for unit to change states in positive direction. See SYST:RAMP command,
PAR. B.106 for ramp details. and restrictions
B.109 SYSTem:RAMP:POSitive? QUERY
SYST:RAMP:POS?
Syntax: Short Form: SYST:RAMP:POS? Long Form: SYSTem:RAMP:POSitive?
Returns: = positive ramp duration (Seconds) from 0.0001 to 10.000.
Description: Indicates the positive ramp time
B.110 SYSTem:RAMP:NEGative COMMAND
SYST:RAMP:NEG
Syntax: Short Form: SYST:RAMP:NEG Long Form: SYSTem:RAMP:NEGative
Where = negative ramp duration (Seconds) from 0.0001 to 10.000.
Description: Establishes the time for unit to change states in negative direction. See SYST:RAMP command,
PAR. B.106 for details and restrictions.
B.111 SYSTem:RAMP:NEGative? QUERY
SYST:RAMP:NEG?
Syntax: Short Form: SYST:RAMP:NEG? Long Form: SYSTem:RAMP:NEGative?
Returns: = negative ramp duration (Seconds) from 0.0001 to 10.000.
Description: Indicates the negative ramp time
B.112 SYSTem:RANGe:CURRent COMMAND
SYST:RANG:CURR
Syntax: Short Form: SYST:RANG:CURR Long Form: SYSTem:RANGe:CURRent
Where = HIGH (HIGH = factory default) or LOW
Description: Establishes range for remote interface current readback and front panel AMPS display. LOW
changes the current range to 1/10 of full scale. If the unit is 200A at full scale, entering
SYST:RANG:LO, changes the ammeter range to 0 - 20A full scale.
B.113 SYSTem:RANGe:CURRent? QUERY
SYST:RANG:CURR?
Syntax: Short Form: SYST:RANG:CURR? Long Form: SYSTem:RANGe:CURRent?
Returns: = HIGH or LOW
Description: Indicates the range for remote interface current readback and front panel AMPS display.
B.114 SYSTem:RANGe:POWer COMMAND
SYST:RANG:POW
Syntax: Short Form: SYST:RANG:POW Long Form: SYSTem:RANGe:POWer
Where = HIGH or LOW (LOW = factory default)
Description: Selects one of two power ranges, low (default) or high for remote interface power readback
and KW meter on front panel. The power ranges are a function of the full scale ammeter range.
For example, for a 5 kW load (600A, 50V), the instrument inherently has a 600A full scale range. So
at, for example, the 100V voltmeter range, the dynamic range of power measurement is: (0 - 100V)
x 600A = 0 - 60,000 Watts, much higher than needed. Therefore, when the voltage is high and the
current is low, SYST:RANG:POW LOW restricts the ammeter to 1/10th of full scale and thus, in this
example, limits the maximum power reading to 6,000 Watts.