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{{Plugin Sidebar | {{Plugin Sidebar | ||
|manufacturer=Tektronix | |||
summary=Sampling system| | |series=500-series scopes | ||
image= | |type=1S1 | ||
caption=1S1 front view| | |summary=Sampling system | ||
introduced=1965 | | |image=Tek 1s1 front2.jpeg | ||
discontinued=1974 | | |caption=1S1 front view | ||
|introduced=1965 | |||
|discontinued=1974 | |||
* [ | |designers=Gene Cowan;Chuck Edgar | ||
* [ | |manuals= | ||
* [[Media:070-0475-00.pdf|Tektronix 1S1 Manual]] (retouched) | |||
* [https://bama.edebris.com/download/tek/1s1/1s1.djvu Tektronix 1S1 Manual] (DjVu @ BAMA) | |||
* [https://w140.com/1s1.pdf Tektronix 1S1 Manual] | |||
* [[Media:tek_1s1_field_training_package.pdf|Tektronix 1S1 Field Training Package]] (OCR) | |||
* [[1S1/Repairs|David Wise 1S1 Repair Notes]] | |||
}} | }} | ||
The '''Tektronix 1S1''' is a [[sampling oscilloscope|sampling]] plug-in for [[500-series scopes]]. | The '''Tektronix 1S1''' is a [[sampling oscilloscope|sampling]] plug-in for [[500-series scopes]], designed by [[Gene Cowan]] (vertical) and [[Chuck Edgar]] (horizontal), [[introduced in 1965]] and sold through 1973. | ||
It is essentially one channel of a sampling unit and a timing unit from a [[661]]. It has its own trigger and timebase. | It is essentially one channel of a sampling unit and a timing unit from a [[661]]. It has its own trigger and timebase. | ||
The oscilloscope's timebase is usually set to a relatively slow sweep rate when using a 1S1. Alternatively, the sweep on the oscilloscope can | The oscilloscope's timebase is usually set to a relatively slow sweep rate when using a 1S1. Alternatively, the sweep on the oscilloscope can free-run, and the horizontal voltage from the oscilloscope can be used to control the 1S1, as described below. | ||
and the horizontal voltage from the oscilloscope can be used to control the 1S1, as described below. | |||
The 1S1 has a 50 Ω [[GR-874 connector]] for signal input. The plug-in supplies power (+100 V and | The 1S1 has a 50 Ω [[GR-874 connector]] for the signal input. The plug-in supplies power | ||
(+100 V and −12.6 V) to accessories like the [[P6032]] Cathode Follower Probe, the | |||
[[281|281 TDR Pulser]], and the [[282|Type 282 Probe Adapter]], which is an active buffer | |||
to allow the use of high-impedance probes with the 50 Ω input of the 1S1 (at reduced bandwidth). | |||
{{MissingSpecs}} | |||
==Operation== | |||
The 1S1 can operate in normal self-swept mode or an external sweep signal can be applied to the 1S1. | The 1S1 can operate in normal self-swept mode or an external sweep signal can be applied to the 1S1. | ||
With the 1S1's internal sweep disabled, the horizontal-in and vertical-out connections can be used | With the 1S1's internal sweep disabled, the horizontal-in and vertical-out connections can be used | ||
so | so the 1S1 acts as a lookup table, a mapping of X to Y, a function. | ||
The 661 also has this capability, in its "A vert/B horiz" mode, which is like X-Y mode for a sampler. | The 661 also has this capability, in its "A vert/B horiz" mode, which is like X-Y mode for a sampler. | ||
In this mode, the horizontal-in voltage controls the time after the trigger event when the sample should be taken, | In this mode, the horizontal-in voltage controls the time after the trigger event when the sample should be taken, | ||
Line 37: | Line 48: | ||
The horizontal-in voltage can also be produced, in "manual" mode, by setting a knob on the 1S1. | The horizontal-in voltage can also be produced, in "manual" mode, by setting a knob on the 1S1. | ||
When the 1S1 is set for INT trigger signal, the EXT TRIG input is terminated with 50 Ω. | |||
==Internals== | |||
The sampler in the 1S1 is quite different from the sampler in the [[1S2]]. The 1S1 uses a [[sampling diodes|four-diode]] sampling bridge, terminated within the 1S1. The 1S2 uses a two-diode feed-through sampler, typical for TDR instruments. | The sampler in the 1S1 is quite different from the sampler in the [[1S2]]. The 1S1 uses a [[sampling diodes|four-diode]] sampling bridge, terminated within the 1S1. The 1S2 uses a two-diode feed-through sampler, typical for TDR instruments. | ||
The 1S1 uses two type [[8416]] tubes, the 12V version of the [[6DJ8]]. | |||
==Pictures== | ==Pictures== | ||
<gallery> | <gallery> | ||
Tek 1s1.jpg|front | Tek 1s1 bottom2.jpeg | ||
Tek 1s1 front2.jpeg | |||
Tek 1s1 left2.jpeg | |||
Tek 1s1 rear3.jpeg | |||
Tek 1s1 right2.jpeg | |||
Tek 1s1 top2.jpeg | |||
Tek 1s1.jpg|Front view | |||
Tek_1S1_Iso.jpeg | 1S1 | |||
Tek_1S1_Front.jpeg | Front | |||
1s1 front details.JPG | Front | |||
Tek_1S1_RHS.jpeg | LHS | |||
Tek_1S1_LHS.jpeg | RHS | |||
Tek_1S1_Top.jpeg | Top | |||
Tek_1S1_Bottom.jpeg | Bottom | |||
1s1 front.jpg | 1s1 front.jpg | ||
1s1 left.jpg | 1s1 left.jpg | ||
1s1 right.jpg | 1s1 right.jpg | ||
Tek 1s1 rear.jpg|Rear | |||
Tek 1s1 rear2.jpg|Rear | |||
Tek_1S1_Delayline.jpeg | Delay Line | |||
1s1 block.jpg|block diagram | 1s1 block.jpg|block diagram | ||
1S1_in_535A.png| 1S1 in operation | |||
</gallery> | </gallery> | ||
==Components== | |||
{{Parts|1S1}} | |||
[[Category:500 series sampling plugins]] | |||
[[Category:500 series plugins]] | |||
[[Category:GR874]] | [[Category:GR874]] |
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