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===Hardware=== | ===Hardware=== | ||
<gallery> | <gallery> | ||
Tek 7b85 front.jpg | Front | |||
7b85-left.jpg | 7B85, left side | |||
7b85-left-del-removed.jpg | 7B85, left side, delay board removed | |||
7b85-right.jpg | 7B85, right side | |||
Tek-7b15-vs-7b85-left.jpg | Family resemblance: 7B15 (top) vs. 7B85 (bottom). Left side. | Tek-7b15-vs-7b85-left.jpg | Family resemblance: 7B15 (top) vs. 7B85 (bottom). Left side. | ||
Tek-7b15-vs-7b85-right.jpg | Family resemblance: 7B15 (top) vs. 7B85 (bottom). Right side. | Tek-7b15-vs-7b85-right.jpg | Family resemblance: 7B15 (top) vs. 7B85 (bottom). Right side. | ||
7b85 left rear.jpg | Left rear | |||
7b85 left front.jpg | Left front | |||
7b85 right front.jpg | Right front | |||
7b85 right rear.jpg | Right rear | |||
</gallery> | </gallery> | ||
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Horizontal mode is set to alternating to show the pulse signal being triggered (A) and the delayed/magnified part (B). | Horizontal mode is set to alternating to show the pulse signal being triggered (A) and the delayed/magnified part (B). | ||
<gallery> | <gallery> | ||
7b85-risetime-5n.jpg | Measuring rise time of a pulse. Delayed signal is scaled for 0-100% on graticule. Delay time is adjusted so the trace crosses the 10% level on the center line. Delta time is adjusted to so the delta-delayed trace crosses 90% on the same vertical line. Delta time readout indicates rise time directly. | |||
7b85-risetime-10n.jpg | Measuring rise time of a pulse. Same as before, rise time increased to 10 ns (HP8112A generator). | |||
7b85-pulse-width.jpg | Pulse width measurement. Delayed signal and delta-delayed trace cross at 50%. Delta time readout indicates pulse width directly. | |||
7b85-period-1.jpg | Pulse period measurement. Delta time is adjusted to overlay the delayed trace with one delayed by an additional period. In this picture, the two traces do not yet overlay exactly. | |||
7b85-period-2.jpg | Pulse period measurement. Delayed trace overlays with one delayed by an additional period, delta time reads pulse period. | |||
</gallery> | </gallery> | ||