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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.
The sampling circuit of the Type N is primitive.  It uses a single diode,
the "interrogate diode", D5480.  The strobe pulse is added to the input
signal using a passive summing circuit.  Consequently, the amplitude of
the kick-out pulse from the input is high, about 150mV.


For calibration of the timebase of the Type N, the [[013-028|013-028 Timing Standard]] was produced.
For calibration of the timebase of the Type N, the [[013-028|013-028 Timing Standard]] was produced.

Revision as of 20:05, 17 April 2011

The Tektronix Type N is a sampling plug-in introduced in 1960 for 500-series scopes. It was the first sampler produced by Tektronix. The risetime is specified to be under 600 picoseconds. The Type N is a complete sampling subsystem, 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 from the scope's sweep circuitry. The input connector is a 50-ohm GR-874. 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.

The sampling circuit of the Type N is primitive. It uses a single diode, the "interrogate diode", D5480. The strobe pulse is added to the input signal using a passive summing circuit. Consequently, the amplitude of the kick-out pulse from the input is high, about 150mV.

For calibration of the timebase of the Type N, the 013-028 Timing Standard was produced.