User Manual

9
Chapter IV Panel Operation
4.1 Basic operation mode
Electronic load can work in the following four modes:
1. Constant current mode of operation (CC).
2. Constant voltage operation mode (CV).
3. Constant resistance operation mode (CR).
4. Constant power operation mode (CW)
4.1.1 Constant current mode of operation (CC)
In constant current mode, the electronic load consumes a constant current, regardless of the input voltage, as
shown in the following figure. Please note that if the source can output the maximum current value is less than the
set constant current value, the load will not be guaranteed to adjust the set current value, the source voltage may
be pulled down test.
Figure 4.1 Constant current mode
4.1.1.1 Standard constant current mode
Press the CC button, the load shows "STANDARD CURR = xxxxxxxxA", the current value of the current prompt,
then press the number keys and decimal point keys on the panel, enter the desired constant current value from
high to low, and press the Enter key to confirm , The load into the standard constant current mode.
In this case, if the input status is OFF, the upper right corner of the display panel will display "OFF". To change
the input status to ON, press the On / Off button. The "CC" or "Unreg" "CC" indicates that the expected constant
current value is reached. If "Unreg" indicates that the load can not be adjusted to the preset current value correctly,
check whether the source under test is properly connected and turned on, or whether the source under test can
output the preset current value.
In this case, if you want to fine-tune the set current value, you can use the rotary encoder in the upper right
corner, clockwise to increase, counterclockwise to reduce, please note that if the set current value has reached the
maximum current set load, The current value can not be adjusted upwards. At this time, the lower right of the
display panel to set the current value indication, one digit under the cursor prompt, said the current fine-tuning the
current position of a unit, if you want to change the adjustment fineness, you can press Rotary encoder, rotary
encoder contains a button, each time the button is pressed, the prompt cursor will move a grid, in order to achieve
fine adjustment adjustment.
4.1.1.2 Load unload constant current mode
Loading and unloading mode is a protection of the source under test. When the source voltage to be
measured is just starting to climb, the load is automatically adjusted to be open. The source voltage does not start
to load until the source voltage climbs to the ONSET voltage. The load is adjusted to set Set the current value.
When the source voltage to be measured begins to drop and drops to the OFFSET unload voltage, the load is