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Peter

Joined 4 May 2014
User page Discussion
Revision as of 03:18, 5 October 2018 by Peter (talk | contribs)

Scopes

Other Instruments

Plugins

Probes and other gear

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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    P6202 rise time measured with 7S12, S-4, S-52

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    P6202 rise time measured with 7S12, S-4, S-52

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    P6230 Rise time measured on a 7S12 with S-52 and S-4 heads, P6230 ground sleeve connected directly at S-52 output (no ground lead)

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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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    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 (7904 mainframe)

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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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    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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    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.

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    S-52 pulse in real time (top trace) and sampled (bottom trace) shown simultaneously on 7844. Approximately equal time scales.

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    15 μVp-p triangle wave measured through 7A22. Using variable-persistence storage mode on a 7613 for noise filtering

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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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    P6022 / passive term. @ 10 mA/Div (top) vs. P6021+134 (bottom), sawtooth @ 100 mAp-p, 100 Hz

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    P6022 / passive term. @ 10 mA/Div (top) vs. P6021+134 (bottom), sawtooth @ 100 mAp-p, 1 kHz

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    P6022 / passive term. @ 10 mA/Div (top) vs. P6021+134 (bottom), sawtooth @ 100 mAp-p, 10 kHz

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    Measuring diode reverse recovery

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    BAT41 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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    7A29 rise time (7104, 7B10, pulse from S-52)

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    308 display, timing mode (binary counter example)

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    308 display, state mode (binary counter example)

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