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The Tektronix Type P plug-in is a step response calibrator [[introduced in 1962]] for [[500-series scopes]]. | The Tektronix Type P plug-in is a step response calibrator [[introduced in 1962]] for [[500-series scopes]]. | ||
It applies a step signal to the vertical input (plug-in connector pins 1 and 3) of the scope. | It applies a step signal to the vertical input (plug-in connector pins 1 and 3) of the scope. | ||
The step is generated by a mercury switch in the Type P and it has a 4 nanosecond risetime. | The step is generated by a [[mercury switch]] in the Type P and it has a 4 nanosecond risetime. | ||
The Type P is designed to simulate a Type [[K]] plug-in being driven by a Type [[107]] pulse generator. | The Type P is designed to simulate a Type [[K]] plug-in being driven by a Type [[107]] pulse generator. | ||
In this sense, it is designed to act as a standard, not as an ideal square pulse source. | In this sense, it is designed to act as a standard, not as an ideal square pulse source. | ||