Gossen Metrawatt GmbH
17
2.4
Transient Operation
When the transient operation is enabled, the load periodically switches between two levels (LevelH and LevelL), which can be applied
to test the dynamic characteristics of the power supply. The transient operation can be executed in the CC, CV and CR modes, and
has three operating statuses: Continuous, Pulsed, and Toggled. Please make sure the List Operation has been disabled before
enabling transient operation.
The parameters associated with transient operation are: low level (LevelL), high level (LevelH), low level time (TimeL), high level time
(TimeH), time for rising edge (TimeR), time for falling edge (TimeF), and operating mode.
Transient high/low level and corresponding CC, CV and CR modes share the same setting ranges.
The range for high/low level time is 0 ~ 655.35ms; the range for rising/falling edge time is 10 μs ~ 655.35ms; the time resolution is
10 μs, and the maximum test frequency is 50 kHz.
Transient test can be turned on and off via
key at the front panel or via remote command (TRANsient ON/OFF). Before you turn
on transient test, you should set the load to the operating mode that needs transient test.
Attention!
!
In transient operation, the operating mode cannot be changed.
Attention!
!
In transient test, the Von point and current limit should be taken into consideration, which may cause the shut down of the
input, thus interrupting the transient test.
2.4.1
Continuous Transient Operation
In continuous operation, the load periodically switches between high/low levels.
The relevant parameters such as
– low level (LevelL),
– high level (LevelH),
– low level time (TimeL),
– high level time (TimeH),
– time for rising edge (TimeR),
– time for falling edge (TimeF) und
– continuous transient operation (cont)
can be set through transient operation menu or via remote command
– (CURRent:LLEVel <NRf+>,
– CURRent:HLEVel <NRf+>,
– VOLTage:LLEVel <NRf+>,
– VOLTage:HLEVel <NRf+>,
– RESistance:LLEVel <NRf+>,
– RESistance:HLEVel <NRf+>,
– TRANsient:LTIMe <NRf+>,
– TRANsient:HTIMe <NRf+>,
– TRANsient:RTIMe <NRf+>,
– TRANsient:FTIMe <NRf+>,
– TRANsient:MODE CONTinuous)
Example: assume that the CCH range is active, and the input is in OFF status, then the transient parameters should be set as follows:
Press
key to enter into transient operation.
Press
key to open transient operation menu.
Set the following parameters in transient operation menu:
Then press
key to turn on the input;
LevelL
5.000 A
LevelH
10.000 A
TimeL
0.50 ms
TimeH
0.50 ms
TimeR
0.20 ms
TimeF
0.20 ms
Mode
Cont
