User:Peter: Difference between revisions

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P6021-bat41-1.jpg | Measuring diode reverse recovery
P6021-bat41-1.jpg | Measuring diode reverse recovery
P6021-bat41-2.jpg | BAT41 diode reverse recovery, 20 mA/Div
P6021-bat41-2.jpg | BAT41 diode reverse recovery, 20 mA/Div
TD quick check example.jpg  | 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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Revision as of 01:34, 6 March 2017

Scopes

Plugins

Probes and other gear

Screen shots

  • 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 ...

    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 ...

  • 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)

    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)

  • Rise time measurement as before, 1000 Hz repetition rate at same brightness settings.

    Rise time measurement as before, 1000 Hz repetition rate at same brightness settings.

  • 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.

    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.

  • 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.

    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.

  • BC337 on 7CT1N

    BC337 on 7CT1N

  • P6202 rise time

    P6202 rise time

  • P6202 rise time

    P6202 rise time

  • 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)

    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)

  • P6230 Rise time without ground lead: 9.2 * 20 ps = 184 ps (equiv. to 1.9 GHz bandwidth)

    P6230 Rise time without ground lead: 9.2 * 20 ps = 184 ps (equiv. to 1.9 GHz bandwidth)

  • P6230 Rise time - Effect of using the "low inductance" ground lead - rise time 400 ps, bandwidth 875 MHz

    P6230 Rise time - Effect of using the "low inductance" ground lead - rise time 400 ps, bandwidth 875 MHz

  • P6230 Rise time - Using the 250 mm alligator ground lead - severe pulse distortion, rise time ~3 ns (115 MHz)!

    P6230 Rise time - Using the 250 mm alligator ground lead - severe pulse distortion, rise time ~3 ns (115 MHz)!

  • A 7B92A (B098xxx) displaying a 1.01 GHz sine in HF Sync mode (7904 mainframe, 7A19 amplifier)

    A 7B92A (B098xxx) displaying a 1.01 GHz sine in HF Sync mode (7904 mainframe, 7A19 amplifier)

  • A 7B92A (B098xxx) triggering a 974 MHz sine applied via 067-0587-02 calibration fixture

    A 7B92A (B098xxx) triggering a 974 MHz sine applied via 067-0587-02 calibration fixture

  • Classic readout board diagnostic display

    Classic readout board diagnostic display

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

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

  • Tektronix 067-0587-02, gain mode, in horizontal slot

    Tektronix 067-0587-02, gain mode, in horizontal slot

  • Tektronix 067-0587-02, gain mode, in vertical slot

    Tektronix 067-0587-02, gain mode, in vertical slot

  • 7D14 screen picture - 500 MHz signal (7A19, 7B92A, 7904)

    7D14 screen picture - 500 MHz signal (7A19, 7B92A, 7904)

  • 7B85 used for rise time measurement

    7B85 used for rise time measurement

  • 7B85 used for rise time measurement

    7B85 used for rise time measurement

  • 7B85 used for pulse width measurement

    7B85 used for pulse width measurement

  • 7B85 used for pulse period measurement

    7B85 used for pulse period measurement

  • 7B85 used for pulse period measurement

    7B85 used for pulse period measurement

  • 7S11/7T11, 1 GHz sine, smooth mode, on variable-persistence storage scope (7613)

    7S11/7T11, 1 GHz sine, smooth mode, on variable-persistence storage scope (7613)

  • 7S11/7T11, 1 GHz sine, smooth mode

    7S11/7T11, 1 GHz sine, smooth mode

  • 7S11/7T11, 1 GHz sine, normal mode

    7S11/7T11, 1 GHz sine, normal mode

  • 7S11/S-4 and 7T11A displaying 1 GHz sine

    7S11/S-4 and 7T11A displaying 1 GHz sine

  • 7S12 as a sampler displaying a 1 GHz signal (hi-res mode / storage)

    7S12 as a sampler displaying a 1 GHz signal (hi-res mode / storage)

  • 7S12 as a sampler displaying a 1 GHz signal (hi-res mode / storage)

    7S12 as a sampler displaying a 1 GHz signal (hi-res mode / storage)

  • 7S12 as a sampler displaying a 1 GHz signal (normal mode / non-storage)

    7S12 as a sampler displaying a 1 GHz signal (normal mode / non-storage)

  • 7S12 displaying the incident pulse from an S-52 (nom. < 25 ps) through an S-6 head (nom. < 30 ps)

    7S12 displaying the incident pulse from an S-52 (nom. < 25 ps) through an S-6 head (nom. < 30 ps)

  • 7S12/S-6/S-52 "Self Portrait" - pulse reflected on S-6 "through" path (approx. 120 ps one way)

    7S12/S-6/S-52 "Self Portrait" - pulse reflected on S-6 "through" path (approx. 120 ps one way)

  • 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.

    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.

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

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

  • sub-millivolt triangle signal displayed through 7A22, BW=1 kHz

    sub-millivolt triangle signal displayed through 7A22, BW=1 kHz

  • sub-millivolt triangle signal displayed through 7A22, BW=10 kHz

    sub-millivolt triangle signal displayed through 7A22, BW=10 kHz

  • sub-millivolt triangle signal displayed through 7A22, BW=100 kHz

    sub-millivolt triangle signal displayed through 7A22, BW=100 kHz

  • sub-millivolt triangle signal through 7A22, BW=1 MHz

    sub-millivolt triangle signal through 7A22, BW=1 MHz

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

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

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

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

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

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

  • Measuring diode reverse recovery

    Measuring diode reverse recovery

  • BAT41 diode reverse recovery, 20 mA/Div

    BAT41 diode reverse recovery, 20 mA/Div

  • Tunnel diode quick check example using the method from Service Scope 49. Right beam is zoomed with delayed timebase to show step speed.

    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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