User:Peter: Difference between revisions
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<gallery> | <gallery> | ||
213 compared to 585.jpg | [[213]] | 213 compared to 585.jpg | [[213]] | ||
Tek-465-front.jpg | [[465]] | Tek-465-front.jpg | [[465]] - from the estate of a hobbyist | ||
Tek 502 with x-y display.jpg | [[502]] | Tek 502 with x-y display.jpg | [[502]] - this one spent many years in a university lab attached to strain gages watching metal samples being broken, at the end reduced to be a DSO pre-amp | ||
Tek-545A-front.jpg | [[545A]] | Tek-545A-front.jpg | [[545A]] - from a guy with a remarkable collection of early radios and phonographs | ||
Tek-549-front.jpg | [[549]] | Tek-549-front.jpg | [[549]] - got looted for tubes by some vulture in Germany, restored & nursed back to health by [[User:Matt|Matt]], additional minor repairs in my shop | ||
Tek-585-81-ca-front.jpg | [[585]] | Tek-585-81-ca-front.jpg | [[585]] - another university retiree | ||
Tek 2230 open.jpg | [[2230]] | Tek 2230 open.jpg | [[2230]] - this was working on the railroad ... | ||
Tek 7503 front.jpg | [[7503]] | Tek 7503 front.jpg | [[7503]] - worked in a plasma physics lab, then moved to the physics dept at a smaller university | ||
7603-4trace.jpg | [[7603]] (2) | 7603-4trace.jpg | [[7603]] (2) - one cured of GHz oscillations but infested by cabling gremlins, the other barely survived rough handling | ||
Tek-7613-front.jpg | [[7613]] | Tek-7613-front.jpg | [[7613]] - my first 7k Tek | ||
Tek-7623A.jpg | [[7623A]] | Tek-7623A.jpg | [[7623A]] | ||
Tek 7633 front.jpg | [[7633]] | Tek 7633 front.jpg | [[7633]] - supposedly from a private museum | ||
Tek7844-front.jpg | [[7844]] | Tek7844-front.jpg | [[7844]] - my #1 go-to scope | ||
Tek_7854_rise_time.jpg | [[7854]] | Tek_7854_rise_time.jpg | [[7854]] - in great shape | ||
Tek-7904-front.jpg | [[7904]] (2) | Tek-7904-front.jpg | [[7904]] (2) - worked for some time, PSU to be repaired | ||
Tek7104-front.jpg | [[7104]] | Tek7104-front.jpg | [[7104]] - tube worn but in decent shape overall | ||
Tek-sc504-am503.jpg | [[SC504]] | Tek-sc504-am503.jpg | [[SC504]] | ||
</gallery> | </gallery> | ||
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7a13a-front.jpg | [[7A13]] "A" | 7a13a-front.jpg | [[7A13]] "A" | ||
7a14 front.jpg | [[7A14]] | 7a14 front.jpg | [[7A14]] | ||
7a16a front.jpg | 7a16a front.jpg | [[7A16A]] | ||
7a17-front.jpg | [[7A17]] | 7a17-front.jpg | [[7A17]] | ||
Tek-7a18a-front.jpg | [[7A18]] | Tek-7a18a-front.jpg | [[7A18]] |
Revision as of 08:26, 30 November 2021
Scopes
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465 - from the estate of a hobbyist
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502 - this one spent many years in a university lab attached to strain gages watching metal samples being broken, at the end reduced to be a DSO pre-amp
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545A - from a guy with a remarkable collection of early radios and phonographs
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585 - another university retiree
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2230 - this was working on the railroad ...
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7503 - worked in a plasma physics lab, then moved to the physics dept at a smaller university
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7603 (2) - one cured of GHz oscillations but infested by cabling gremlins, the other barely survived rough handling
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7613 - my first 7k Tek
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7633 - supposedly from a private museum
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7844 - my #1 go-to scope
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7854 - in great shape
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7904 (2) - worked for some time, PSU to be repaired
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7104 - tube worn but in decent shape overall
Other Instruments
Carts, Cameras etc.
Plugins
500
7000
S
TM500
Probes
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P6451 probe internal, PCB front
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P6451 probe internal, PCB back
Other
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1103 Probe power supply, front panel
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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7104 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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7104 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 200 ps/Div. Camera: Nikon D7000, 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 500 ps/Div. Camera: Nikon D7000, 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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P6230 Rise time without ground lead: 9.2 * 20 ps = 184 ps (equiv. to 1.9 GHz bandwidth)
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P6230 Rise time - Effect of using the "low inductance" ground lead - rise time 400 ps, bandwidth 875 MHz
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P6230 Rise time - Using the 250 mm alligator ground lead - severe pulse distortion, rise time ~3 ns (115 MHz)!
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Classic readout board diagnostic display
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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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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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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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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
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Measuring diode reverse recovery
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Diode reverse recovery, 20 mA/Div
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Tunnel diode quick check example using the method from Service Scope 49. Right beam is zoomed with delayed timebase to show step speed.
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308 display, timing mode (binary counter example)
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308 display, state mode (binary counter example)