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3.6 Transient Operation
Transient operation enables the module to periodically switch between two load levels, as
might be required for testing power supplies or other DC sources. There are three different
transient testing modes: continuous, pulse, and toggle.
Generates a respective pulse stream that toggles between two load levels.
Generates a load change that returns to its original state after some time period.
Generates a repetitive pulse stream that toggles between two load levels.
It is similar to continuous mode except that the transient points are controlled
by explicit triggers instead of an internal transient generator.
Continuous
In this mode, the electronic load generates a repetitive pulse stream that toggles between two
load levels. Load could switch the state between two value settings, value A and value B.
In CC mode, transient testing can be used to check the stability of the source voltage. Transient
functions have two current levels (A level, B level), which should be in the same range (high
range or low range). You can set the frequency as well as the duty cycle, which will affect the
timing and width of each level.
The slew rate determines the rate at which the level changes. Upon receiving a trigger, and the
load will continuously switch between the A/B levels preset. Transient loads are usually used to
test the power supply’s performance under continuous changing load conditions. Figure 20
shows the current waveform of continuous transient operation mode.
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