User:Peter: Difference between revisions
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Tek-465-front.jpg | [[465]] − from the estate of a hobbyist | Tek-465-front.jpg | [[465]] − from the estate of a hobbyist | ||
Tek 502 with x-y display.jpg | [[502]] − 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 502 with x-y display.jpg | [[502]] − 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-511AD-front.jpg | [[511AD]] − from a physics institute in Slovenia | |||
Tek-545A-front.jpg | [[545A]] − from a guy with a remarkable collection of early radios and phonographs | Tek-545A-front.jpg | [[545A]] − from a guy with a remarkable collection of early radios and phonographs | ||
Tek-549-front.jpg | [[549]] − looted for tubes by some Bavarian vulture, restored & nursed back to health by [[User:Matt|Matt]], additional minor repairs in my shop | Tek-549-front.jpg | [[549]] − looted for tubes by some Bavarian vulture, restored & nursed back to health by [[User:Matt|Matt]], additional minor repairs in my shop |
Revision as of 03:32, 26 January 2023
Scopes
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465 − from the estate of a hobbyist
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502 − 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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511AD − from a physics institute in Slovenia
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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 one had been 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 with 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)