Ametek Amrel PLA Series Operation Manual page 95

Example:
Resistance Programming Functions
RESistance
This subsystem programs the constant resistance mode functions of the Electronic Load. The IEEE488.1 command,
"RSET" and "SET" (if current active mode is CR mode), can also be used.
RES
This command sets the input resistance level that is to be applied immediately in the constant resistance mode. If the
Electronic Load is not in the CR mode when the command is sent, the pro grammed level is saved and is applied when the
Load cha nges to CR mode. The rate of input change is in accord with the slew rate in effect.
Parameter:
Example:
RES:TRIG
This command sets the input resistance level that is to be applied on occurrence of a trigger in the constant resistance
mode. If the Electronic Load is not in the CR mode when the comman d is sent, the programmed TRIG level becomes a
stored IMM level that takes effect when the Load changes to CR mode. The rate of input change is in accord with the
slew rate in effect.
Parameter:
RES:TLEV
This command sets the transient resistance level in the CR mode. When the transient subsystem is on, the Electronic
Load will switch between the main level and transient level at a rate determined by the slew rate in effect. The IEEE
488.1 command, "RTR" can also be used. The input resistance transient switching will occur only when RES:TLEV is
programmed as following:
Low Range
Middle and high range
Parameter:
Example:
RES:DUTY
This command sets pulse duty cycle, as a percentage of the total cycle, of continuous transient mode in CR mode. If the
Electronic Load is operating in another mode, the duty cycle is stored until the Load changes to continuous mode.
Parameter:
Example:
RES:FREQ
This command sets pulse frequency of continuous transient mode in Hz. If the Electronic Load is operating in another
mode, the pulse frequency is stored until the Load changes to continuous mode.
Parameter:
Example:
RES:SLEW
This command sets the current slew rate for both ranges in CR mode. The programmed slew rate is in effect for all
current changes except INP:ON or OFF.
RES:SLEW value. To determine the actual value, use the query RES:SLEW?.
Parameter:
Example:
RES:LIM:MAX
This command sets and queries the maximum input resistance level that is to be applied immediately in the CR mode.
Parameter:
M470039-01 REV-F
"CURR:LIM:MIN 50" – sets minimum current input level to 50Amps
Low Range: minimum to maximum value ; MIN; MAX
Middle Range: minimum to maximum value; MIN: MAX
High Range: minimum to maximum value; MIN; MAX
"RES 5" – sets the resistance level to 5ohms.
minimum to maximum value; MIN; MAX
TLEV>LEV
TLEV<LEV
minimum to maximum value; MIN; MAX
"RES:TLEV 15" – sets the resistance transient level to 15ohms.
2 to 98; MIN; MAX
" :DUTY 50" – sets a 50% duty cycle for transient current mode.
RES
0.25 to 20000; MIN; MAX
"RES:FREQ 1000" – sets a 1000Hz frequency for transient current mode.
The hardware implementation selects a slew rate that is closest to the
Low Range: minimum to maximum value; MIN; MAX
High Range: minimum to maximum value; MIN; MAX
"RES:SLEW 0.1" - sets the resistance slew rate to 0.1A/s.
0 to maximum value; MIN; MAX
Units: 
Units: 
Units: 
Unit: %
Unit: Hz
Units: Ohm/s.
Units: Ohm.
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