SD-20: Difference between revisions
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discontinued = (?) | | discontinued = (?) | | ||
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* [http://w140.com/tek_sd-20_user_manual.pdf Tektronix SD-20 User Manual (PDF)] | * [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)] | * [http://w140.com/72nd_ARFTG_Conference_CD.pdf Harper, Ridler, and Salter Paper Discussing TDR with SD-20 (PDF)] | ||
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{{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 | 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 }} | {{Spec | Sampling rate | 100 Hz - 200 kHz }} | ||
{{Spec | Signal connections | 50 Ω [[ | {{Spec | Signal connections | 50 Ω [[3.5 mm connector]]s }} | ||
{{EndSpecs}} | {{EndSpecs}} | ||
Revision as of 05:00, 8 April 2017
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 |
| Signal connections | 50 Ω 3.5 mm connectors |
