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SD-24: Difference between revisions
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The "filter" function on the CSA803C/11801C can be used with TDR or crosstalk measurements to characterize a system at a slower rise time. | The "filter" function on the CSA803C/11801C can be used with TDR or crosstalk measurements to characterize a system at a slower rise time. | ||
</blockquote> | </blockquote> | ||
Picosecond Pulse Labs Application Note AN-2a says: | |||
<blockquote> | |||
TEK 11802/SD-24: TEK introduced this new scope in the | |||
fall of 1989. It is a completely new design and is not | |||
interchangeable with any of the previous "S" series TEK | |||
sampling scopes. The TEK design team included: Stan | |||
Kaveckis, Augoston Augoston, John Carlson, John Rettig, | |||
Jon Lucker and Roy Lewallen. The 11802 is a completely | |||
digital mainframe. It can support two SD-24 dual-channel | |||
samplers. It is IEEE- 488 programmable. The time base | |||
accuracy was excellent. The trigger jitter was 2.5 ps rms. | |||
</blockquote> | |||
<blockquote> | |||
The SD-24 sampler uses a six-diode sampling bridge similar | |||
in concept to the "trapped charge", traveling wave S-4 | |||
sampler. The SD-24 is a dual-channel sampler which | |||
includes a built-in TDR pulser. The SD-24 sampler is | |||
internally terminated in 50 Ohms. The risetime is 17.5 ps as | |||
specified. The picosecond domain transient performance | |||
was found to track well with waveforms measured on the | |||
HYPRES scope. It did show a few extra small (4%) | |||
perturbations in the 200 ps to 500 ps region that were not | |||
seen on the HYPRES or HP-54121A samplers. After 1 ns, | |||
the settling time transient performance was excellent. It was | |||
far better than any of the other samplers tested. | |||
</blockquote> | |||
<gallery> | <gallery> | ||
Image:Tek sd-24.jpg | Image:Tek sd-24.jpg | ||
</gallery> | </gallery> | ||