7613
The Tektronix 7613 is a 100 MHz variable-persistence storage oscilloscope that uses two vertical and one horizontal 7000-series plug-ins. There is also a rack-mount version, the R7613.
In the 76x3 family (7613, 7623 and 7633), the 7613 has the slowest writing speed specification. In storage mode, it is therefore more suited to lower-frequency work, or as a display for spectrum analyzers or sampling plugins.
Project Engineer for the 7613 and 7623 was Bill DeVey.
Key Specifications
| Bandwidth | 100 MHz |
|---|---|
| Fastest calibrated sweep | 5 ns/Div |
| Stored writing speed | > 5 Div/μs |
| Display | P31 phosphor, 8 × 10 divisions of 0.9 cm (Tek 154-0670-00 tube), 8.5 kV acceleration |
| Persistence | 15 seconds at 5 Div/μs, 60 seconds at 1 Div/μs |
| Vertical modes | Left / Alt / Add / Chop / Right |
| Trigger Source | Left / Vert Mode / Right |
| Inputs | Z Axis |
| Outputs | Camera power, Vert signal, +Gate, +Sawtooth |
| Line Voltage | 100 / 110 / 120 / 200 / 220 / 240 V, ±10% |
| Power | max. 170 W (R7613: 180 W) |
| Weight | 13.6 kg / 30 lb (instrument only) |
| Operating Environment | 0°C – +50°C, < 15,000 ft |
Options
- Opt.1: Without readout
- Opt.3: Extra EMI shielding
- Opt.5: Line frequency 50-400 Hz
- Opt.6: Spectrum analyzer graticule
- Opt.7: Without Signals Out
Internals
The 7613's vertical output amplifier is built around a 155-0080-00 hybrid. Other custom Tek ICs used include 155-0011-00 clock & chop blanking, 155-0022-00 channel switch, and the 7000 series readout system chips.
The 7613, like the other 76xx models, has a linear supply with discrete regulator circuits, which does not provide +5 V for lights (A9) without modification.
The 7613 uses a CRT anode voltage of 7 kV, produced by a solid-state voltage multiplier fed by a transformer.
Prices
| Year | 1973 | 1976 | 1980 | 1984 | 1990 | |
|---|---|---|---|---|---|---|
| Mainframe only | Catalog price | $2,500 | $2,850 | $3,620 | $5,330 | $8,600 |
| 2021 value | $15,300 | $13,600 | $11,940 | $13,940 | $17,880 | |
| Mainframe with 2 × 7A18A, 7B53A | Catalog price | $4,420 | $5,005 | $6,585 | $9,345 | $14,680 |
| 2021 value | $27,050 | $23,900 | $21,710 | $24,440 | $30,520 |
Links
- Three kinds of Storage, in Tekscope, July 1972 or @ radiomuseum.org
- Tek 7613 page @ amplifier.cd
- Tek 7613 page @ barrytech.com
Pictures
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7613 front
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R7613 front
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Left side - X amplifier (top), Y amplifier (center), power supply (bottom left) and plugin motherboard (bottom center)
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Right side - calibrator (far left), storage control (center), readout (right)
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Z amplifier and dynamic focus board (top), readout board (center)
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Calibrator (left) and storage control boards
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V and H amplifier detail
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Another 7613 vertical amplifier
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vertical amplifier detail
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vertical output transistor mounting
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Voltage regulator board
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CRT removed
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CRT neck detail
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Comparison of electron guns: Tektronix 7613 (bottom) HP 1741A (top)
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7613 graticule
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geometry alignment with 067-0587-02
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geometry alignment, 067-0587-02 in horizontal slot
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