User Manual

22
Advanced Functions
In addition to the 4 general modes of operation, there are a number of other more application specic functions. These
functions enable more advanced testing.
6.1 Short Operation
The electronic load can simulate a short circuit at its input. During front panel operation, press + to switch the
short on/o state. Short operation will not aect the present setting. When turning o the short state, the load returns
to the original set state. The actual value of the electronic load in short operation depends on the mode and range that
is active when the short is turned on. In CC or CR mode, the maximum short current is typically 110% of the current
range. In CV mode, short means setting the load’s constant voltage to be 0 V. In short operation mode, you can measure
the maximum short current (Amax) or DC current (ADC) of the power source to be measured. You can set this function
via the Conguration menu.
6.2 Short-circuit Analog Function
Short circuit simulation and short circuit current measurement:you may press [ Shift ] + [ 1 ] button to emulate a short
state.It can be used to check whether the tested instrument’s short protection is available.
In short mode,the DC load will draw maximum current from the DC supply in any of the four operation modes(CC,CV,CW
or CR).In CC,CV,or CR mode,you may press [ Shift ] + [ 1 ] to stop short.The DC load will return to its previous
operation.However,in CW mode,the short current will continue to be drawn.To stop the short,you must press the [On/O]
key after you press [ Shift ] + [ 1 ]. When emulating a Short in CC, CW or CR mode, the maximum allowable short
current is equal to the 110% of current range. Under CV mode, short circuit current is equivalent to that constant
voltage value of load is 0 V.
6.3 Transient Operation
Transient mode periodically switches between two load levels. There are three dierent transient modes:
Continuous Generates a respective pulse stream that toggles between two load levels.
Pulse Generates a load change that returns to its original state after some time period.
Toggle Generates a repetitive pulse stream that toggles between two load levels. It is similar to contin-
uous mode except that the transient points are controlled by explicit triggers instead of an in-
ternal transient generator.
Depending on the selected Trigger Source from within the “SYSTEM” menu, the operation may start immediately.
To run the transient operation, rst press to enable the input. Then, send a trigger to start the operation. If Trigger
Source is set to “Manual”, press and then (or press ) to send a trigger. Refer to “Congure Trigger Source” in section
“SYSTEM Menu” to congure the Trigger Source.
Note: The number next to “TRAN” on display will count each transition. It can only count up to 65535 transitions,
after which it will reset to 0 and start over.
To disable transient operation, rst press to disable the input. Then, press and (or press ). Select “O” and press to
conrm.