BNC 645 - Manual (Page 32)

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zero-crossing point if the waveform has a non-zero phase). If the
burst count is infinite, the Sync signal works the same way
described above for continuous waveforms.
• If the burst generation is externally gated, the Sync signal starts
at a TTL “high” with the external gate signal. However, the sync
signal will not transition to a TTL “low” until the end of the last
cycle (may not be the zero-crossing point if the waveform has a
non-zero phase).
• When the output waveform polarity is inverted, the associated
sync out signal is not affected.
3.13 To Restore the Factory Default Settings
To reset the waveform generator to its factory default settings, press
“Store/Recall” button and then choose “Set to Def” softkey. See Figure
3-12 and Figure 3-13. After choosing “Yes” to make confirmation, the
waveform generator has been restored to factory default settings.
Figure 3-14
Figure 3-15
For the default settings, please refer to Table 2.1 for Model 645 factory
default settings.
To set the power-on state, please refer to Section 5.2 Storing the
instrument state.