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453: Difference between revisions
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the sweep at one sweep time/div rate and then, at some selectable | the sweep at one sweep time/div rate and then, at some selectable | ||
horizontal point, switches to a different sweep time/div rate. | horizontal point, switches to a different sweep time/div rate. | ||
The 453A Mod 127C appears in the 1971 Television Products Catalog, with | |||
the description: | |||
<blockquote> | |||
With the Mod 127C, and Internal TV Sync Separator circuit permits | |||
stable internal line or Field-rate triggering from displayed composite | |||
video or composite sync waveforms. External /10 trigger sources are | |||
replaced by Internal TV Sync positions providing Line sync pulses to the | |||
B Sweep circuit and either Field or Line sync pulses to the A sweep circuit. | |||
</blockquote> | |||
*[http://w140.com/mmm/tek-453.pdf Tektronix 453 Manual (PDF)] | *[http://w140.com/mmm/tek-453.pdf Tektronix 453 Manual (PDF)] | ||