User:Peter: Difference between revisions

Revision as of 05:58, 31 January 2016

Scopes

Plugins

Probes and other gear

P6202
P6230

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 ...
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.
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.
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.
BC337 on 7CT1N
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 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 - 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) triggering a 974 MHz sine applied via 067-0587-02 calibration fixture
Signal beam interruption by readout seen on beam 2 of a 7844
Classic readout board diagnostic display
15 μV p-p triangle 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 vertical slot
7D14 screen picture - 500 MHz signal (7A19, 7B92A, 7904)
7B85 used for rise time measurement
7B85 used for rise time measurement
7B85 used for pulse width 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
7S11/7T11, 1 GHz sine, normal mode
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 (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/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.
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=10 kHz
sub-millivolt triangle signal displayed through 7A22, BW=100 kHz
sub-millivolt triangle signal through 7A22, BW=1 MHz