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7704A: Difference between revisions
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{{Oscilloscope Sidebar| | {{Oscilloscope Sidebar| | ||
title=Tektronix 7704A| | title=Tektronix 7704A| | ||
image= | image=Tek-7704a-manual.jpg| | ||
caption= | caption=7704A (manual)| | ||
years=1972 — 1985| | years=1972 — 1985| | ||
summary=200 MHz non-storage mainframe| | summary=200 MHz non-storage mainframe| | ||
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[[7000-series_plug-ins#Vertical plug-ins|7000-series vertical plug-ins]] | [[7000-series_plug-ins#Vertical plug-ins|7000-series vertical plug-ins]] | ||
and two [[7000-series_plug-ins#Horizontal plug-ins|7000-series horizontal plug-ins]]. | and two [[7000-series_plug-ins#Horizontal plug-ins|7000-series horizontal plug-ins]]. | ||
Its bandwidth is about | Its bandwidth is about 200 MHz, depending on plug-ins. | ||
There was also an option (option 9) to have the bandwidth extended to | There was also an option (option 9) to have the bandwidth extended to 250 MHz. The | ||
7704A followed the [[7704]], improving on the bandwidth and introducing modularity. | 7704A followed the [[7704]], improving on the bandwidth and introducing modularity. | ||
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which contains the power supply, plug-in slots, and main interface board. On top is | which contains the power supply, plug-in slots, and main interface board. On top is | ||
the "display unit", which contains the CRT, HV power supply, and output amplifiers for | the "display unit", which contains the CRT, HV power supply, and output amplifiers for | ||
driving the deflection plates of the CRT. These units detach. A large | driving the deflection plates of the CRT. These units detach. A large multi-pin connector | ||
passes signals and power from the acquisition unit to the display unit. It is important | passes signals and power from the acquisition unit to the display unit. It is important | ||
not to damage this connector when assembling or disassembling the units. | not to damage this connector when assembling or disassembling the units. | ||
An optional component, the [[P7001]] Processing Unit, can be added to a 7704A between the | An optional component, the [[P7001]] Processing Unit, can be added to a 7704A between the acquisition unit and the display unit. The Acquisition Unit of the 7704A, the P7001 Processor, and the Display Unit of the 7704A are connected by the Acquisition-Processor-Display (APD) Interface shown below. | ||
acquisition unit and the display unit. The Acquisition Unit of the 7704A, | |||
the P7001 Processor, and the Display Unit of the 7704A | |||
are connected by the Acquisition-Processor-Display (APD) Interface shown below. | |||
The 7704A SMPS uses a custom Tek chip to implement the control functions. | The 7704A SMPS uses a custom Tek chip to implement the control functions. Since the SMPS is a kind of oscillator, there is the issue of how it will start when it is first powered up. Early 7704As use a diac in the starter circuit. | ||
Since the SMPS is a kind of oscillator, there is the issue of how it will start when it is first powered up. | |||
Early 7704As use a diac in the starter circuit. | |||
Later 7704As use a unijunction transistor in the starter circuit. | Later 7704As use a unijunction transistor in the starter circuit. | ||
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[[Category:Specifications needed]] | [[Category:Specifications needed]] | ||
[[Category:Image needed]] | [[Category:Image needed]] | ||
__NOTOC__ | __NOTOC__ | ||