Gossen Metrawatt GmbH
21
Figure 2.8
Toggled Transient Operation
2.5
List Operation
Besides Transient operation, the electronic load provides more flexible list operation, which can make the load operate according to the
preset sequence.
The list operation allows you to program a series of sequence steps, and the operation mode, the load values, the duration time for
each step can be set. The sequence operation can be executed in the CC, CV, and CR modes. The minimum duration for each step is
10us, and the maximum one is 99999.99999 s (around 27.78 hours). The list operation allows to be executed cyclically, and the cycle
times can be set; the different lists can be chained so that when one list has been executed, the other chained list will be enabled,
which further perfects the capability of the load to implement more complicated test tasks. Each list can contain 50 steps at most, and
the load can store 7 lists.
The associated parameters of a list operation can be edited and set through the list operation menu or via remote command. The load
provides convenient list editing functions. When the user is operating input/edit sequence step, it is easy to check the previous and
subsequent steps, and it is allowed to edit, insert, and delete immediately, which simplifies the list input operation effectively.
The set value of each step will be automatically saved when exiting from step edit menu, and the other list parameters will be saved
immediately after been edited.
The list operation also can be implemented via the remote command.
Please make sure the transient operation has been disabled before enabling list operation. In list operation, if the operation mode for
next step is different from the present step, the load will automatically have a 5 ms-delay after the present step is over to avoid the
probable current surge. The load’s input will be turned off during this 5 ms-delay.
Figure 2.9 is a list running diagram for 5 steps. See section 5 for detailed information about programming lists from the front panel.
Figure 2.9
List Operation
Attention!
!
In list operation, the Von point and current limit level should be taken into consideration, which may cause the shut down of
the input, thus interrupting the list operation.
