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8.8.5 Test duration
The Test duration setting enables to set the total test time, i.e. the time period
during which the SOW burst packages are sent out.
Changing the setting is easy - touch the Test duration value box on the param-
eter window (120 in the example) to set the test duration time. A red frame is
displayed around the field. The duration time may be entered using the wheel
or the keypad.
Touch the “units” button (s in the example) to set the time unit. Selectable time
units are s, min, h and Cont (continuous).
8.8.6 Phase synchronization
Touch the Synch/Asynch button (Asynch in the example) to activate/deactivate
the synchronization of test pulses to the EUT mains frequency.
When this button is set to Asynch, the phase value button ( --- in the example)
will display ‘---’. When this button is set to Synch, the user must also set the
phase value.
To set the phase value, touch the phase value button. A red frame is displayed
around the field. The phase value may be entered using the wheel or the keypad.
The value is in degree units and may range from 0 to 359.
In Phase synchronization mode (Synch) the first pulse of a group will be synchro-
nized with the set phase angle of the EUT mains frequency. The phase angle
synchronization has priority over a possibly conflicting Repetition time setting.
8.8.7 Derating
Some parameter combinations will not be accepted due to the power limitation
of pulse generating module. In case an invalid combination of parameters was
entered an error message will be displayed when the test is started.
