11302
The Tektronix 11302 is a 500 MHz analog oscilloscope with a micro-channel plate CRT that can operate with 11000-series plug-ins or 7000-series plug-ins. Note, however, that the 7000 series plugins have mechanical interlock preventing them from being installed into an 11K mainframe. The 11302 includes a 500 MHz counter/timer. The 11302A version (1989) increased external counter input bandwidth to 750 MHz and added a readout mode button.
Except for the MCP CRT, the 11302 is basically the same as the 400 MHz 11301.
The 11301 and 11302 make use of a patented system for automatically calibrating all the way to the graticule (i.e., including CRT deflection sensitivity) by optically sensing the position of the beam with respect to the graticule and applying any necessary correction factors. This is discussed in the patent and also on page 9 of the Handshake article linked below which states:
Optical sensors on the CRT bezel sense when the beam crosses the graticule lines to factor this information into the auto cal control signals. As a result, accuracy of the 11300-Series is controlled from the plug-in input connector to the CRT graticule without operator intervention.
Key Specifications
| Bandwidth | 500 MHz |
|---|---|
| Sweep | 5 ns/div to 500 ms/div, 1-2-5, ×10 magnifier (same specs for delayed time base) |
| Triggering | 0.35 div (int) or 20 mV (ext) to 50 MHz, increasing to 1 div/150 mV at max. bandwidth |
| Trigger modes | DC, AC (>50 Hz), HF Reject (<30 kHz), LF reject (>80 kHz), TV (line or field) |
| X-Y operation | X from center plugin, bandwidth 3 MHz X-Y phase difference <1° to 1 MHz, <3° to 2 MHz |
| Features |
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| Weight | 44 pounds (20 kg) |
| Power consumption | 240 W max |
Links
Documents referencing 11302
| Document | Class | Title | Authors | Year | Links |
|---|---|---|---|---|---|
| Handshake 1986-1987 Winter.pdf | Article | 11300-Series extends the usefulness of analog scopes | Dale Aufrecht | 1986 | 11301 • 11302 |
Patents that may apply to 11302
| Page | Title | Inventors | Filing date | Grant date | Links |
|---|---|---|---|---|---|
| Patent US 4677340A | Method and apparatus for calibrating deflection in an oscilloscope | Lawrence J. Miller • Donald P. Chitwood | 1984-12-24 | 1987-06-30 | 11301 • 11301A • 11302 • 11302A |
| Patent US 4749907A | Method and apparatus for automatically calibrating a graticuled cathode ray tube | John P. Boatwright • Alan M. Feuerbacher • Timothy M. Holte | 1985-12-02 | 1988-06-07 | 11301 • 11301A • 11302 • 11302A |
Patents that may apply to 11302A
| Page | Title | Inventors | Filing date | Grant date | Links |
|---|---|---|---|---|---|
| Patent US 4677340A | Method and apparatus for calibrating deflection in an oscilloscope | Lawrence J. Miller • Donald P. Chitwood | 1984-12-24 | 1987-06-30 | 11301 • 11301A • 11302 • 11302A |
| Patent US 4749907A | Method and apparatus for automatically calibrating a graticuled cathode ray tube | John P. Boatwright • Alan M. Feuerbacher • Timothy M. Holte | 1985-12-02 | 1988-06-07 | 11301 • 11301A • 11302 • 11302A |
| Patent US 4705961A | Programmable sweep generator | Walt Ainsworth • Art Metz | 1986-01-21 | 1987-11-10 | 155-0240-00 • 2445 • 2445A • 2445B • 2465 • 2465A • 2465B • 2467 • 2467B • 11302A • SCD1000 |
Internals
The 11302 contains a 77 nanosecond delay line.
Full calibration of an 11302 requires the use of the TEKCATS software.
Prices
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Pictures
11302
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11302 front
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11302 front (upgraded to 11302A)
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11302 back
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High Voltage Power Supply
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High Voltage Power Supply
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Bottom board with trigger, sweep, and horizontal amplifier
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Front panel interface board
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Firmware EPROMs
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Top internal view
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A11 Main Processor board
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Intel D2817A holds calibration constants
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HV parts location
11302A
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11302A
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11302A
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11302A
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11302A
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11302A
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11302A
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11302A
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11302A
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11302A
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11302A
Components
Some Parts Used in the 11302