7L12
The Tektronix 7L12 is a 1.8 GHz Spectrum Analyzer plug-in for 7000-series scopes. It is a double-width plugin to be installed in the right vertical and left (or only) horizontal bay.
Early models had a mechanical reference level readout. Later, front panel outputs for 1st and 2nd LO were added to allow connecting a TR501 or TR502 tracking generator. Late models had LED reference level readout.
The 7L12 does not have the UNCAL indicator typical for spectrum analyzers that alerts the operator when the sweep speed is too fast for the given resolution.
The Tek catalogs suggested the 7603 Opt.06 or 7613 Opt.06 as suitable mainframes.
Key Specifications
| Input frequency | 100 kHz – 1.8 GHz (Opt.39: 2.5 GHz) |
|---|---|
| Span | 500 Hz/Div – 100 MHz/Div |
| Sweep | 1 μs/Div to 5 ms/Div (1-2-5) |
| Resolution bandwidth | 300 Hz – 3 MHz in decade steps |
| Sensitivity | -115 dBm at 300 Hz |
| Vertical scale | 10 dB/Div, 2 dB/Div or linear |
| Reference level | -100 dBm – +30 dBm |
| Video filters | 30 kHz, 300 Hz or 3 Hz |
| Features |
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Prices
| Year | Price | 2015 value |
|---|---|---|
| 1971 | $4,850 | $28,100 |
| 1980 | $6,500 | $18,760 |
| 1984 | $10,250 | $23,460 |
| 1988 | $12,500 | $24,800 |
Links
Pictures
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7L12, later version with LED reference level display, front
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Left side
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Top view
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Right side
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Bottom view
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Bottom front
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Bottom center
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Top front
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later and early model side by side
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early model
