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one [[2-series or 3-series horizontal plug-ins|2-series or 3-series horizontal plug-in]]. | one [[2-series or 3-series horizontal plug-ins|2-series or 3-series horizontal plug-in]]. | ||
The plug-ins directly drive the horizontal and vertical deflection plates of the CRT. | The plug-ins directly drive the horizontal and vertical deflection plates of the CRT. | ||
The 561 is the most common of the [[560-series scopes]]. | The 561 is the most common of the [[560-series scopes]]. There is also an RM561, the | ||
rackmount version of the 561. | |||
There is also a 561S, which is used with special plug-ins such as the 3A1S and 3B1S. | There is also a 561S, which is used with special plug-ins such as the 3A1S and 3B1S. | ||
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bandwidth of 10MHz. The 561S uses a special CRT with higher sensitivity but smaller | bandwidth of 10MHz. The 561S uses a special CRT with higher sensitivity but smaller | ||
deflection limits. | deflection limits. | ||
* [http://w140.com/tek_rm561.pdf Tektronix RM561 Manual (PDF)] | |||
<gallery> | <gallery> |