7603
The Tektronix 7603 is a general-purpose 100 MHz non-storage scope that takes
two 7000-series vertical plug-ins
and one 7000-series horizontal plug-in.
It was made in various versions for many years. Some have a fan, some don't. There are at least two variants of the vertical output amplifier.
The AN/USM 281C is essentially a 7603 with option 01 (no readout = 7603N).
Key Specifications
Bandwidth | 100 MHz with 7A11, 7A16, 7A17; 110 MHz with 7A19, 70 MHz with 7A18 |
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Fastest calibrated sweep | 5 ns/Div |
CRT | P31 phosphor, 8 × 10 divisions of 1.22 cm (Tek T7400/154-0640-00 tube) - Option 8: P11 phosphor |
CRT Opt. 4 | P31 phosphor, 8 × 10 divisions of 1.0 cm (Tek 154-0672-00 tube) |
CRT Opt. 6 | P31 phosphor, 8 × 10 divisions of 1.22 cm (Tek 154-0673-00 tube, spectrum analyzer graticule) |
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%, 50—440 Hz |
Power | Max. 170 W |
Weight | 13.6 kg / 30 lb (instrument only) |
Operating Environment | 0°C – +50°C, < 15,000 ft |
Internals
The 7603'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.
Prices
Year | 1973 | 1976 | 1980 | 1984 | 1990 | |
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Mainframe only | Catalog price | $1,600 | $1,800 | $2,260 | $2,865 | $4,235 |
2015 value | $8,500 | $7,470 | $6,480 | $6,510 | $7,650 | |
Mainframe with 2 × 7A18 + 7B53 | Catalog price | $3,520 | $3,955 | $5,225 | $6,880 | $10,315 |
2015 value | $18,720 | $16,410 | $14,970 | $15,640 | $18,630 |
Links
- Detailed repair report @ amplifier.cd (German) / (translated)
- Tek 7603 @ barrytech.com
- Catalog page with specs
- Repair Report #2
- Repair Report #3
- Repair Report #4 - 7603 with 7D20
- No plug-in lights on the 7603 Mainframe
- EB5AGV's Tektronix R7603 / 7D20 page
- Picture of a completely disassembled 7603
Pictures
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Tektronix 7603, front view
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R7603
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7603, left side
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7603, right side
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7603, top view
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back panel inside
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bottom view of backplane
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Rear view with LV regulator board flipped out
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low voltage regulator board