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using the 500-series oscilloscope just as a power supply and a display. The oscilloscope | using the 500-series oscilloscope just as a power supply and a display. The oscilloscope | ||
is operated in X-Y mode and gets its horizontal signal from the Type N plug-in instead of | is operated in X-Y mode and gets its horizontal signal from the Type N plug-in instead of | ||
from the scope's sweep circuitry. The input connector is a 50-ohm GR-874. | from the scope's sweep circuitry. The input connector is a 50-ohm | ||
[[Connectors#GR-874|GR-874]]. | |||
The Type N was introduced in 1960, followed by the [[661]] a year later, and discontinued in 1964, | The Type N was introduced in 1960, followed by the [[661]] a year later, and discontinued in 1964, | ||
making it the shortest-lived plug-in. | making it the shortest-lived plug-in. | ||