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7S12: Difference between revisions
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===Measurements=== | ===Measurements=== | ||
====TDR==== | |||
<gallery> | <gallery> | ||
File:7s12-self-portrait.jpg | TDR "Self Portrait" — pulse reflected on S-6 "through" path (approx. 120 ps one way) | File:7s12-self-portrait.jpg | TDR "Self Portrait" — pulse reflected on S-6 "through" path (approx. 120 ps one way) | ||
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File:7s12-5in.jpg | 7S12/S-6/S-52 displaying pulse reflection from ~ 5 in semi-rigid SMA cable. Stored display of two traces. Left trace: cable only, right trace: cable plus SMA-to-BNC adapter (~ 25 mm) | File:7s12-5in.jpg | 7S12/S-6/S-52 displaying pulse reflection from ~ 5 in semi-rigid SMA cable. Stored display of two traces. Left trace: cable only, right trace: cable plus SMA-to-BNC adapter (~ 25 mm) | ||
File:7s12-reflected.jpg | 7S12/S-6/S-52 displaying reflected pulse from end of 5 in semi-rigid SMA cable. Stored display overlaying multiple traces, left to right: cable alone, SMA-to-BNC adapter added, BNC f-f adapter added, (cheap) 50 Ω terminator added. | File:7s12-reflected.jpg | 7S12/S-6/S-52 displaying reflected pulse from end of 5 in semi-rigid SMA cable. Stored display overlaying multiple traces, left to right: cable alone, SMA-to-BNC adapter added, BNC f-f adapter added, (cheap) 50 Ω terminator added. | ||
File:7s12-s52-pulse-1.jpg | Full pulse pattern of a 7S12/S-52 in real time (top trace) and sampled (bottom trace) shown simultaneously on [[7844]]. 7S12 trace at slowest possible sweep. | |||
File:7s12-s52-pulse-2.jpg | S-52 pulse in real time (top trace) and sampled (bottom trace) shown simultaneously on [[7844]]. Approximately equal time scales. | |||
</gallery> | |||
====Probe rise times==== | |||
<gallery> | |||
File:P6202-risetime-7s12-1ns.jpg | Rise time of a [[P6202]] 500 MHz FET probe measured on a 7S12 with [[S-52]] and [[S-4]] (in a [[7844]] mainframe), at 1 ns/Div | |||
File:P6202-risetime-7s12-100ps.jpg | Rise time of a [[P6202]] 500 MHz FET probe measured on a 7S12 with [[S-52]] and [[S-4]] (in a [[7844]] mainframe), at 100 ps/Div | |||
File:P6230-rt1.jpg | P6230 Rise time, no ground lead | |||
File:P6230-rt2.jpg | P6230 Rise time, no ground lead, enlarged – 9.2 * 20 ps = 184 ps (equiv. to 1.9 GHz bandwidth) | |||
File:P6230-rt3.jpg | P6230 with "low inductance" ground lead – rise time 400 ps, bandwidth 875 MHz | |||
</gallery> | |||
====As a generic sampler==== | |||
<gallery> | |||
File:7s12-7s11-1ghz-nonstore.jpg | [[7S11]] with [[S-4]] and 7S12 with [[S-6]] and [[S-53]] displaying a 1 GHz sine in normal mode without storage. Sampling is evident. | File:7s12-7s11-1ghz-nonstore.jpg | [[7S11]] with [[S-4]] and 7S12 with [[S-6]] and [[S-53]] displaying a 1 GHz sine in normal mode without storage. Sampling is evident. | ||
File:7s12-7s11-1ghz-store2.jpg | [[7S11]] with [[S-4]] and 7S12 with [[S-6]] and [[S-53]] displaying a 1 GHz sine in high-res mode with variable-persistence storage on a [[7613]]. | File:7s12-7s11-1ghz-store2.jpg | [[7S11]] with [[S-4]] and 7S12 with [[S-6]] and [[S-53]] displaying a 1 GHz sine in high-res mode with variable-persistence storage on a [[7613]]. | ||
</gallery> | </gallery> | ||
[[Category:7000 series combined plugins]] | [[Category:7000 series combined plugins]] | ||
[[Category:Sampling plugins]] | [[Category:Sampling plugins]] | ||
[[Category:Time-domain reflectometers]] | [[Category:Time-domain reflectometers]] | ||