CH9720 Programmable DC Electronic Load Instructions Chapter III Menu Operation
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Press the
【
Constant Current
】
key to enter the constant current mode. The button light will be
on. Enter the current value to be set by the numeric keypad. The entered number will be
displayed in the status bar. Press
【
ENT
】
to confirm.Press the
【
Start
】
key or the
【
ON
】
key to start the load measurement.
Example: Set the constant current to 1.2345A
In the constant current mode,input 1.2345 through the numeric keypad,
press
【
ENT
】
to confirm
In the load start state,you can use the
【
▲
】
or
【
▼
】
key to move the cursor,
rotate the knob to change the setting parameters,or reset the parameters by
the numeric keys,and the load will automatically follow the changed value.
Constant voltage mode of operation (CV)
In constant voltage mode, the electronic load will consume enough current to keep the
input voltage constant at the set point.
V
(set voltage)
Input voltage
I
Load current
Hint: Please refer to the constant current setting method for setting and changing the
voltage setting value.
Note: When the source voltage is less than the set value, the load will not work
at constant voltage.
Note: The difference between the source voltage and the set voltage will fall on
the source resistance and lead resistance. If the difference is large and
the internal resistance is small, the load may consume a large current!
Constant power mode of operation (CP)
In constant power mode, the load consumes a constant amount of power.When the
input voltage changes, the load will regulate the current to maintain the power consumed.
V
V1
Input voltage
V2 (set power P)
V3