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{{Plugin Sidebar | {{Plugin Sidebar | ||
manufacturer=Tektronix | | |manufacturer=Tektronix | ||
summary=Sampling system plug-in| | |series=500-series scopes | ||
image=Type n front2.jpg | | |type=Type N | ||
caption=Type N front view| | |summary=Sampling system plug-in | ||
introduced=1960 | | |image=Type n front2.jpg | ||
discontinued=1964 | | |caption=Type N front view | ||
|introduced=1960 | |||
manuals= | |discontinued=1964 | ||
|designers=Norm Winningstad | |||
|manuals= | |||
* [http://w140.com/tek_type_n.pdf Tektronix Type N Manual Complete (PDF, OCR)] | * [http://w140.com/tek_type_n.pdf Tektronix Type N Manual Complete (PDF, OCR)] | ||
* [http://bama.edebris.com/manuals/tek/n Tektronix Type N Manual without schematics (BAMA, offline?)] | * [http://bama.edebris.com/manuals/tek/n Tektronix Type N Manual without schematics (BAMA, offline?)] | ||
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Its risetime is specified to be under 600 picoseconds. | Its risetime is specified to be under 600 picoseconds. | ||
Type N was [[introduced in 1960]], superseded by the [[661|Type 661]] Sampling Oscilloscope system a year later, | Type N was [[introduced in 1960]], superseded by the [[661|Type 661]] Sampling Oscilloscope system a year later, and discontinued in 1964. | ||
and discontinued in 1964. | |||
Type N is a complete sampling subsystem, using the 500-series oscilloscope just as a power supply and a display. | Type N is a complete sampling subsystem, using the 500-series oscilloscope just as a power supply and a display. | ||
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The vertical scale of the Type N is fixed at 10 mV/cm, making Type N one of the few Tektronix plug-ins with fixed vertical gain. | The vertical scale of the Type N is fixed at 10 mV/cm, making Type N one of the few Tektronix plug-ins with fixed vertical gain. | ||
In practice, attenuators such as the [[017-011]] can be placed in the signal path, | In practice, attenuators such as the [[017-011]] can be placed in the signal path, external to the Type N, to achieve the desired sensitivity. | ||
external to the Type N, to achieve the desired sensitivity. | |||
Using an input attenuator also has the effect of attenuating the kick-out pulse seen by the device under test. | Using an input attenuator also has the effect of attenuating the kick-out pulse seen by the device under test. | ||
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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. | ||
{{BeginSpecs}} | |||
{{Spec | Rise time | 600 ps }} | |||
{{Spec | Bandwidth | ~580 MHz }} | |||
{{Spec | Deflection | 10 mV/Div (fixed) }} | |||
{{EndSpecs}} | |||
==See Also== | ==See Also== |
Revision as of 10:05, 13 August 2021
The Tektronix Type N is a sampling plug-in for 500-series scopes. It was the first sampler produced by Tektronix. Its risetime is specified to be under 600 picoseconds.
Type N was introduced in 1960, superseded by the Type 661 Sampling Oscilloscope system a year later, and discontinued in 1964.
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 signal is applied through a 50 Ω GR-874 connector.
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 150 mV.
The vertical scale of the Type N is fixed at 10 mV/cm, making Type N one of the few Tektronix plug-ins with fixed vertical gain. In practice, attenuators such as the 017-011 can be placed in the signal path, external to the Type N, to achieve the desired sensitivity. Using an input attenuator also has the effect of attenuating the kick-out pulse seen by the device under test.
According to Stefan Graef (http://www.messmuseum.de/tek661.htm),
The engineer behind the N was Norm Winningstad. He worked at Hughes Aircraft Electronics Division and was offered a job at HP's oscilloscope division to join their Sampling Scope team. After getting informed about the work he went to Tektronix developing the N (according to: "A narrative history of Hewlett-Packard from 1939-1990" by John Minck)
For calibration of the timebase of the Type N, the 013-028 Timing Standard was produced.
Key Specifications
Rise time | 600 ps |
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Bandwidth | ~580 MHz |
Deflection | 10 mV/Div (fixed) |
See Also
Pictures
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Vertical signal path schematic
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Block diagram
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Calibration adaptor
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Reference to Type N in 1961 General Electric Tunnel Diode Manual
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