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7S14: Difference between revisions
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* [http://w140.com/7s14_instruction.pdf Tektronix 7S14 Instruction Manual (PDF)] | * [http://w140.com/7s14_instruction.pdf Tektronix 7S14 Instruction Manual (PDF)] | ||
}} | }} | ||
The '''Tektronix 7S14''' is a 1 GHz dual-trace delayed sweep sampler plug-in. | The '''Tektronix 7S14''' is a 1 GHz dual-trace delayed sweep sampler plug-in. | ||
It is almost identical to the [[5S14]] plugin for the [[5000-series_scopes|5000 series]]. | |||
It is a complete sampling system unlike, for example, the [[ | It is a complete sampling system unlike, for example, the [[7S11]], | ||
which requires a separate timing plug-in to provide triggering | which requires a separate timing plug-in to provide triggering | ||
and sampling pulse generation. | and sampling pulse generation. | ||
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==Internals== | ==Internals== | ||
The 7S14 contains two samplers, trigger and sweep circuitry, and circuitry to interface it with the 7000-series mainframe in which it operates. The mainframe provides the 7S14 with power. | The 7S14 contains two samplers, trigger and sweep circuitry, | ||
and circuitry to interface it with the 7000-series mainframe in which it operates. | |||
The mainframe provides the 7S14 with power. | |||
The 7S14 sends the mainframe horizontal, vertical and readout signals. | |||
The 7S14 has an integrated delay measurement function. | The 7S14 has an integrated delay measurement function. | ||
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In triggered mode, the signal passes through two stages of | In triggered mode, the signal passes through two stages of | ||
[[MC1672]] ECL logic gate, and then into the [[155-0109]] trigger chip. | [[MC1672]] ECL logic gate, and then into the [[155-0109]] trigger chip. | ||
In HF-sync mode, the 7S14 uses a [[BD4]] back diode (0.1 mA, 3 pF), and inductor, and a | In HF-sync mode, the 7S14 uses a [[BD4]] back diode (0.1 mA, 3 pF), and inductor, | ||
[[152-0177-00]] tunnel diode (10 mA, 4 pF) to form an oscillator that oscillates | and a [[152-0177-00]] tunnel diode (10 mA, 4 pF) to form an oscillator | ||
somewhere between 16.5 MHz and 25 MHz. | that oscillates somewhere between 16.5 MHz and 25 MHz. | ||
The sampler used by the 7S14 is a two-diode design. | The sampler used by the 7S14 is a two-diode design. | ||