Difference between revisions of "N"

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The Tektronix Type N is a [[sampling_oscilloscope|sampling]] plug-in for [[500-series scopes]].  It was the first sampler produced by Tektronix.
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{{Plugin Sidebar|
The risetime is specified to be  
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title=Tektronix N|
under 600 picoseconds.  The Type N is a complete sampling subsystem,
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summary=Sampling system plug-in|
using the 500-series oscilloscope just as a power supply and a display.  The oscilloscope
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image=Type n front2.jpg |
is operated in X-Y mode and gets its horizontal signal from the Type N plug-in instead of
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caption=Type N front view|
from the scope's sweep circuitry.  The input connector is a 50-ohm
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years=1960 – 1964 |
[[Connectors#GR-874|GR-874]].
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type=Sampling System|
The Type N was [[introduced in 1960]], superseded by the [[661|Type 661]] Sampling Oscilloscope system a year later,
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series=[[500-series scopes]]|
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manuals=
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* [http://bama.edebris.com/manuals/tek/n Tektronix Type N Manual without schematics (BAMA)]
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* [http://w140.com/tektronix_type_n_schematics.pdf Tektronix Type N Schematics (PDF)]
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* [http://w140.com/tek_fcp/tek_type_n_factory_cal_proc.pdf Tektronix Type N Factory Calibration Procedure (PDF)]
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* [http://w140.com/tek_type_n.pdf Tektronix Type N Manual Complete (PDF)]
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}}
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The Tektronix Type N is a [[sampling_oscilloscope|sampling]] plug-in for [[500-series scopes]].  It was the first sampler produced by Tektronix. The 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Type N was [[introduced in 1960]], superseded by the [[661|Type 661]] Sampling Oscilloscope system a year later,
 
and discontinued in 1964, making it the shortest-lived plug-in.
 
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,
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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 Ω [[Connectors#GR-874|GR-874]].
the "interrogate diode", D5480.  The strobe pulse is added to the input
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signal using a passive summing circuit.  Consequently, the amplitude of
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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 kick-out pulse from the input is high, about 150mV.
 
  
The vertical scale of the Type N is fixed 10mV/cm.  The Type N is one of the
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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.  In practice, attenuators 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.  
few Tektronix plug-ins with fixed vertical gain.  In practice, attenuators
 
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),
 
According to Stefan Graef (http://www.messmuseum.de/tek661.htm),
 
<blockquote>
 
<blockquote>
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)
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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)
 
</blockquote>
 
</blockquote>
  
 
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.
  
* [http://bama.edebris.com/manuals/tek/n Tektronix Type N Manual without schematics (BAMA)]
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==Specification==
* [http://w140.com/tektronix_type_n_schematics.pdf Tektronix Type N Schematics (PDF)]
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* Rise time: 600 ps  (Bandwidth ~ 580 MHz)
* [http://w140.com/tek_fcp/tek_type_n_factory_cal_proc.pdf Tektronix Type N Factory Calibration Procedure (PDF)]
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* Deflection: 10 mV/Div (fixed)
* [http://w140.com/tek_type_n.pdf Tektronix Type N Manual Complete (PDF)]
 
  
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==Pictures==
 
<gallery>
 
<gallery>
 
Image:Type n front2.jpg
 
Image:Type n front2.jpg
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File:Type n cal adaptor.JPG|Calibration adaptor
 
File:Type n cal adaptor.JPG|Calibration adaptor
 
</gallery>
 
</gallery>
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[[Category:Sampling plugins]]
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[[Category:500 series plugins]]

Revision as of 09:53, 14 May 2014

Template:Plugin Sidebar The Tektronix Type N is a sampling plug-in for 500-series scopes. It was the first sampler produced by Tektronix. The 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, making it the shortest-lived plug-in.

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 Ω GR-874.

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 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.

Specification

  • Rise time: 600 ps (Bandwidth ~ 580 MHz)
  • Deflection: 10 mV/Div (fixed)

Pictures