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555: Difference between revisions
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The 555 uses special horizontal plug-ins that contain the trigger and sweep. | The 555 uses special horizontal plug-ins that contain the trigger and sweep. | ||
Early instances of the 555 came with the 21 and 22 horizontal plug-ins. | Early instances of the 555 came with | ||
Later instances came with the 21A and 22A horizontal plug-ins, | the 21 and 22 horizontal plug-ins. | ||
which use tunnel diodes for triggering. Delayed triggering is supported. | Later instances came with | ||
the 21A and 22A horizontal plug-ins, | |||
which use [[tunnel diodes]] for triggering. | |||
Delayed triggering is supported. | |||
Since the 555 is a dual-beam scope, it is also possible | Since the 555 is a dual-beam scope, it is also possible | ||
to start one of the sweeps while the other beam is sweeping. | to start one of the sweeps while the other beam is sweeping. | ||