NF WAVE FACTORY WF1967, Инструкция по эксплуатации

Страница: 212 / 330

8.4 Phase Synchronization between Channels
WF1967/WF1968 8-6
8.4 Phase Synchronization between Channels
Even if you set the frequency and phase to the same values using the 2-channel equivalence setting
function, the phase relationship between the output waveforms from the 2 channels is changed
accordingly. To synchronize the phases, the phase synchronous operation is required.
This synchronous operation is used for 2-channel independent operation (the channel mode setting is set
to [Indep]).
If you want to always keep the same frequency or frequency ratio and need a phase synchronization state,
use the 2-channel coordination function.
☞
P.8-7, P.8-11
For synchronization of multiple units,
☞
P. 9-2

Performing synchronization

Phase relationship after synchronous operation
The oscillation phase for each channel is initialized by the synchronous operation. The phase
difference of the output waveform appears as the difference of the phase setting for each channel.
Even if you make a synchronous operation, changing a frequency later loses the synchronization
relationship. If necessary, make a synchronous operation accordingly.

Operational restrictions
There are restrictions shown in the following table to the synchronous operation. The synchronous
operation is used for 2-channel independent operation. Even if the synchronous operation is invalid,
making a synchronous operation causes both channels to stop the oscillation once.
Item Restriction
Waveform Invalid for noise and DC.
Modulated oscillation
mode
Invalid for FM and FSK.
Sweep oscillation mode Invalid for frequency sweep. Invalid for gated single sweep.
Burst oscillation mode Invalid .
The delay time varies depending on the output range. Therefore, when the range is different between the
channels, the apparent phase difference becomes larger.
First, set the channel mode to [Indep] and
set the frequency setting for both channels
to the same value.
The synchronous operation is performed in
the Utility screen.
Select [φSync] in the Utility screen, and
then press the ENTER key.
This runs the phase synchronization.
At this time, the phase will be discontinuous
temporarily because both channels stop the
oscillation once.
In the Utility screen, select
[φSync] and then press the
ENTER key to execute the
phase synchronization