User:Peter: Difference between revisions
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File:Tek7104-superluminal-beam.jpg | [https://web.archive.org/web/20110926020847/http://www.oregonlive.com/silicon-forest/index.ssf/2011/09/a_tektronix_oscilloscope_that.html Faster-than-light] beam on 7104? Using a [[067-0587-02]] calibration fixture at maximum amplitude produces this trace spanning 1.2 Div horizontally at 200 ps/Div and 8 Div vertically. Trace length is (1.2² + 8²)<sup>½</sup> × 8.5 mm = 68.8 mm, travelled in 1.2 × 200 ps = 240 ps. Apparent speed is therefore 68.8×10<sup>-3</sup> / 240×10<sup>-12</sup> m/s or 2.86×10<sup>8</sup> m/s. '''Very''' near miss ... | |||
File:Tek7104-ristetime-100hz.jpg | Rise time measurement. 150 ps risetime pulse from [[067-0587-02]] at 100 Hz repetition rate. Measured 240 ps (corrected for 150 ps fixture rise time: 190 ns = 1.8 GHz) | File:Tek7104-ristetime-100hz.jpg | Rise time measurement. 150 ps risetime pulse from [[067-0587-02]] at 100 Hz repetition rate. Measured 240 ps (corrected for 150 ps fixture rise time: 190 ns = 1.8 GHz) | ||
File:Tek7104-ristetime-1000hz.jpg | Rise time measurement as before, 1000 Hz repetition rate at same brightness settings. | File:Tek7104-ristetime-1000hz.jpg | Rise time measurement as before, 1000 Hz repetition rate at same brightness settings. | ||
Revision as of 04:07, 30 June 2015
Scopes
Plugins
Screen shots
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Faster-than-light beam on 7104? Using a 067-0587-02 calibration fixture at maximum amplitude produces this trace spanning 1.2 Div horizontally at 200 ps/Div and 8 Div vertically. Trace length is (1.2² + 8²)½ × 8.5 mm = 68.8 mm, travelled in 1.2 × 200 ps = 240 ps. Apparent speed is therefore 68.8×10-3 / 240×10-12 m/s or 2.86×108 m/s. Very near miss ...
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Rise time measurement. 150 ps risetime pulse from 067-0587-02 at 100 Hz repetition rate. Measured 240 ps (corrected for 150 ps fixture rise time: 190 ns = 1.8 GHz)
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Rise time measurement as before, 1000 Hz repetition rate at same brightness settings.
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7104 recording a single shot pulse (from 067-0587-02) at 200ps/Div. Camera: Nikon D7100, 50 mm f/1.4, ISO 3200, 1/2 s. CRT filter not removed.
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7104 recording 1 GHz sine, single shot at 200ps/Div. Camera: Nikon D7100, 50 mm f/1.4, ISO 3200, 1/2 s. CRT filter not removed. CRT amplification loss is evident around the center line.
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BC337 on 7CT1N
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P6202 rise time
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P6202 rise time
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A 7B92A (B098xxx) displaying a 1.01 GHz sine in HF Sync mode (7904 mainframe, 7A19 amplifier)
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A 7B92A (B098xxx) triggering a 974 MHz sine applied via 067-0587-02 calibration fixture
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Signal beam interruption by readout seen on beam 2 of a 7844
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Classic readout board diagnostic display
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15 μV p-p triangle wave measured through 7A22. Using variable-persistence storage mode on a 7613 for noise filtering.
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Tektronix 067-0587-02, gain mode, in horizontal slot
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Tektronix 067-0587-02, gain mode, in vertical slot
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7D14 screen picture - 500 MHz signal (7A19, 7B92A, 7904)
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7B85 used for rise time measurement
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7B85 used for rise time measurement
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7B85 used for pulse width measurement
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7B85 used for pulse period measurement
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7B85 used for pulse period measurement
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7S11/7T11, 1 GHz sine, smooth mode, on variable-persistence storage scope (7613)
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7S11/7T11, 1 GHz sine, smooth mode
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7S11/7T11, 1 GHz sine, normal mode
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7S11/S-4 and 7T11A displaying 1 GHz sine
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7S12 as a sampler displaying a 1 GHz signal (hi-res mode / storage)
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7S12 as a sampler displaying a 1 GHz signal (hi-res mode / storage)
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7S12 as a sampler displaying a 1 GHz signal (normal mode / non-storage)
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7S12 displaying the incident pulse from an S-52 (nom. < 25 ps) through an S-6 head (nom. < 30 ps)
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7S12/S-6/S-52 "Self Portrait" - pulse reflected on S-6 "through" path (approx. 120 ps one way)
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sub-millivolt triangle signal displayed through 7A22, BW=1 kHz
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sub-millivolt triangle signal displayed through 7A22, BW=10 kHz
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sub-millivolt triangle signal displayed through 7A22, BW=100 kHz
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sub-millivolt triangle signal through 7A22, BW=1 MHz
