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{{Plugin Sidebar| | |||
title=Tektronix 1S2| | |||
summary=Sampling system/TDR| | |||
image=1s2_front.jpg | | |||
caption=1S2 front view| | |||
years=1967 – 1972?| | |||
type=Combinedr| | |||
series=[[500-series scopes]]| | |||
manuals= | |||
* [http://w140.com/kurt/tek_1s2_sn1990-up.pdf 1S2 manual (PDF, sn 1990 and up)] | |||
* [http://www.pa4tim.nl/wp-content/uploads/2012/01/1S2calibrationPA4TIM.pdf 1S2 Calibration Guide by Fred Schneider, PA4TIM] | |||
* [http://www.pa4tim.nl/?p=3016 1S2 Page on the Website of Fred Schneider, PA4TIM] | |||
}} | |||
The 1S2 is a [[sampling oscilloscope|sampling]]/TDR plug-in for [[500-series scopes]]. | The 1S2 is a [[sampling oscilloscope|sampling]]/TDR plug-in for [[500-series scopes]]. | ||
Like the [[1S1]], it is a complete sampling subsystem and uses the mainframe | Like the [[1S1]], it is a complete sampling subsystem and uses the mainframe merely as a power supply and low-speed display. | ||
merely as a power supply and low-speed display. | |||
Unlike the 1S1, it contains pulsers that allows it to perform time-domain reflectometry (TDR) measurements. | Unlike the 1S1, it contains pulsers that allows it to perform time-domain reflectometry (TDR) measurements. | ||
The 1S2 has two 50 | The 1S2 has two 50 Ω pulsers, one of which is active at a time. One puts out a 250 mV pulse with 50 ps risetime. | ||
The other puts out a slower 1 | The other puts out a slower 1 V pulse. The sampling bridge is a feed-through type. | ||
For TDR measurements, the signal from one of the internal pulsers is fed through the sampler, | |||
and out to the the transmission line being tested. | For TDR measurements, the signal from one of the internal pulsers is fed through the sampler, and out to the the transmission line being tested. | ||
Returning pulses are detected as they pass back through the sampler, | Returning pulses are detected as they pass back through the sampler, and they are reabsorbed by the 50 Ω impedance of the pulser. | ||
and they are reabsorbed by the 50 | |||
Waveform output can be to the CRT of the mainframe and/or to a plotter | Waveform output can be to the CRT of the mainframe and/or to a plotter or low-speed data acquisition device via banana connectors on the front of the 1S2. | ||
or low-speed data acquisition device via banana connectors on the front of the 1S2. | |||
The 1S2 was [[introduced in 1967]] and was sold through 1971 or 1972. | The 1S2 was [[introduced in 1967]] and was sold through 1971 or 1972. | ||
==References== | ==References== | ||
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* [http://w140.com/kurt/50_years_sampling.pdf 50 Years of RF and Microwave Sampling, Mark Kahrs] | * [http://w140.com/kurt/50_years_sampling.pdf 50 Years of RF and Microwave Sampling, Mark Kahrs] | ||
* [http://www.picosecond.com/objects/AN-04.pdf Picosecond Pulse Labs Application Note 4: TDR] | * [http://www.picosecond.com/objects/AN-04.pdf Picosecond Pulse Labs Application Note 4: TDR] | ||
==Pictures== | |||
<gallery> | <gallery> | ||
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Image:1s2_bottom.jpg|bottom view | Image:1s2_bottom.jpg|bottom view | ||
</gallery> | </gallery> | ||
[[Category:Sampling plugins]] | |||
[[Category:500 series vertical plugins]] |