Constant resistance (cr) mode – HMC Electronics MDL Series BK Precision DC Electronic Load System Module User Manual
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Transient Voltage Level
A/B transient voltage level can be set on front panel or by remote operation. The electronic load
can continuously toggle between the two levels when transient operation is turned on.
Constant Resistance (CR) Mode
In this mode, the electronic load is equivalent to a constant resistance, as shown below. The
electronic load will linearly change the current, according to the input voltage.
Figure 19 - Constant Resistance Mode
Ranges
When working in CR mode, you can press the Setup key to enter the RANGE menu. Two
overlapping ranges can be selected: LOW RANGE or HIGH RANGE. Resistance can be edited in
either of the two ranges. Low range will supply higher accuracy and better resolution when you set
lower resistance. If any value you set is outside the maximum value of the LOW RANGE, you should
select HIGH RANGE. If the electronic load is in remote control mode, you can use the RES:RANG
command to switch resistance range.
Immediate Resistance Level
Set the resistance level via front panel or by sending SCPI command RES <n>. If the load is in CR
mode, the new resistance level setting immediately changes the input. If the load is not in CR
mode, the resistance level setting will be saved for use until mode is switched to CR mode.
Transient Resistance Level
A/B transient resistance level can be set on front panel or by remote operation. The load can
continuously toggle between the two levels when transient operation is turned on.
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