NF WAVE FACTORY WF1967, Инструкция по эксплуатации

Страница: 236 / 330

11.2 Basics
WF1967/WF1968 11-6
e) Phase at step end [StopPhs]
Normally, when the prescribed step time has
elapsed, the sequence moves on to the next step
regardless of the reference phase. However, if you
wish to set the sequence to move on to the next
step after the completion of one cycle of
waveform, it is possible to specify the end phase
(stop phase).
However, in WF1968, the end phase setting is enabled only for channel 1. The stop phase cannot be
set for channel 2. In addition, when the waveform is a square wave, noise and DC, it is not possible to
specify the stop phase.
When the stop phase is specified, after the lapse of the prescribed step time, the sequence moves on to
the next step when the specified reference phase has been reached, with the output setting maintained
as it is (sweep is not performed during this interval). As a result, the actual step time is longer than the
specified step time. The sequence moves on to the next step with a continuous phase regardless of the
stop phase setting.
The following figures show the example, in which the stop phase is specified and in which it is not
specified, when the phase between steps is quickly changed. Phase setting value is 0 ° in the previous
step and 90 ° in the next step. Stop phase setting value is 45 °. Both, the reference phase at the turn of
the steps are contiguous. When StopPhs is On, proceeds to the next step when the reference phase is
equal to the set value
Similarly, following figure show the example, in which the stop phase is a specified and in which it is
not specified, when the amplitude is quickly changed.
In the example, both the phase setting value and the stop phase setting value are 0° when a stop
phase is specified. In both cases, the phase is continuous at the transition of the steps.
StopPhs setting
reference phase
(internal signal)
phase setting = 0°
previous step next step
phase setting = 90°
proceed on the
next step when
reference phase
is 45°
output signal
when StopPhs
is Off
output signal
when StopPhs
is On, stop
phase setting is
45°
wait for stop
phase
step time