Difference between revisions of "N"

From TekWiki
Jump to: navigation, search
m (Not shortest, that's 1L40 at 3 years.)
Line 45: Line 45:
 
==Pictures==
 
==Pictures==
 
<gallery>
 
<gallery>
File:Type n front2.jpg
+
Type n front2.jpg
File:Type n right.jpg
+
Type n right.jpg
File:Type n left.jpg
+
Type n left.jpg
File:Type n top.jpg
+
Type n top.jpg
File:Type n bottom2.jpg
+
Type n bottom2.jpg
File:Type n bottom.jpg
+
Type n bottom.jpg
File:Type n rear.jpg
+
Type n rear.jpg
File:Tek type n rg.jpg
+
Tek type n rg.jpg
File:Type n vert.png|Vertical signal path schematic
+
Type n vert.png|Vertical signal path schematic
File:Tek n block.png|Block diagram
+
Tek n block.png|Block diagram
File:Type n cal adaptor.JPG|Calibration adaptor
+
Type n cal adaptor.JPG|Calibration adaptor
 +
Ge1961TunnelDiodeManual page83.jpg|Reference to Type N in 1961 General Electric Tunnel Diode Manual
 
</gallery>
 
</gallery>
  

Revision as of 09:25, 19 August 2017

Manuals – Specifications – Links – Pictures

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Type N was introduced in 1960, superseded by the Type 661 Sampling Oscilloscope system a year later, and discontinued in 1964.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 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.

Specifications

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

Pictures