SD-20: Difference between revisions
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{{Plugin Sidebar 2 | | |||
title=Tektronix SD-20 | | |||
summary = 10 GHz Loopthrough Sampling Head | | |||
series=[[11800-series scopes]] | | |||
image=Tek sd-20.jpg | | |||
caption=Tektronix SD-20 Sampling Head | | |||
introduced = 1989 | | |||
discontinued = (?) | | |||
manuals= | |||
* [http://w140.com/tek_sd-20_user_manual.pdf Tektronix SD-20 User Manual (PDF)] | |||
* [http://w140.com/72nd_ARFTG_Conference_CD.pdf Harper, Ridler, and Salter Paper Discussing TDR with SD-20 (PDF)] | |||
}} | |||
The '''Tektronix SD20 Loopthrough Sampling Head''' is a single-channel, 20 GHz loop-through sampling head designed for low-loss testing in applications such as microwave systems research and development, digital device characterization and high-speed digital communications circuit design. | |||
The SD20 is nonterminated and keeps losses to a minimum by routing the signal of interest directly through the sampling head without the need of a power divider. The SD20 can also be used for customized TDR measurements of transmission lines and controlled impedance devices. An external signal generator may be used, instead of the [[SD-24]] step generator, to tailor the TDR stimulus to fit a particular situation. For instance, slower slew rates or higher amplitude may be utilized, or you may perform half-sine or impulse testing. In digital communications, the SD20 is useful for viewing and triggering on the clock signal without the use of a power divider. | |||
{{BeginSpecs}} | |||
{{Spec | Rise time | 17.5 ps }} | |||
< | {{Spec | Bandwidth | 20 GHz typ. }} | ||
< | {{Spec | Noise | typically 750 µV<sub>RMS</sub>, 1.2 m V<sub>RMS</sub> max. (350 µV typ./550 µV max. with smoothing) }} | ||
{{Spec | Max. input | 1.0 V<sub>p-p</sub> signal, 1.6 V<sub>p-p</sub> (AC+Offset) operating, ±3 V non-destructive }} | |||
< | {{Spec | Sampling rate | 100 Hz - 200 kHz }} | ||
< | {{EndSpecs}} | ||
</ | |||
==Pictures== | |||
<gallery> | <gallery> | ||
Tek sd-20.jpg | |||
Tek sd-20 1.jpg | Tek sd-20 1.jpg | ||
Tek sd-20 2.jpg | Tek sd-20 2.jpg | ||
Revision as of 04:11, 1 November 2016
The Tektronix SD20 Loopthrough Sampling Head is a single-channel, 20 GHz loop-through sampling head designed for low-loss testing in applications such as microwave systems research and development, digital device characterization and high-speed digital communications circuit design.
The SD20 is nonterminated and keeps losses to a minimum by routing the signal of interest directly through the sampling head without the need of a power divider. The SD20 can also be used for customized TDR measurements of transmission lines and controlled impedance devices. An external signal generator may be used, instead of the SD-24 step generator, to tailor the TDR stimulus to fit a particular situation. For instance, slower slew rates or higher amplitude may be utilized, or you may perform half-sine or impulse testing. In digital communications, the SD20 is useful for viewing and triggering on the clock signal without the use of a power divider.
Key Specifications
| Rise time | 17.5 ps |
|---|---|
| Bandwidth | 20 GHz typ. |
| Noise | typically 750 µVRMS, 1.2 m VRMS max. (350 µV typ./550 µV max. with smoothing) |
| Max. input | 1.0 Vp-p signal, 1.6 Vp-p (AC+Offset) operating, ±3 V non-destructive |
| Sampling rate | 100 Hz - 200 kHz |
