7904: Difference between revisions

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194 bytes added ,  3 April 2016
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===7904A differences===
===7904A differences===
The 7904A re-implements the vertical amplifier using Hypcon-packaged amplifier chips designed for the [[7104]], such as the [[155-0178-00]].
The 7904 had an elaborate 5-decade built-in calibrator with variable rate that was dropped from the 7904A.  In the 7904A, The Control Illumination switch moved to the rear panel, and the [[7000 series readout system|readout system]] gained a pulsed mode in which it is synchronized with the sweep instead of interrupting the display at random times.  This pulsed mode is not compatible with all time base plug-ins (see manual p. 1-12).
The 7904 had an elaborate 5-decade built-in calibrator with variable rate that was dropped from the 7904A.  In the 7904A, The Control Illumination switch moved to the rear panel, and the [[7000 series readout system|readout system]] gained a pulsed mode in which it is synchronized with the sweep instead of interrupting the display at random times.  This pulsed mode is not compatible with all time base plug-ins (see manual p. 1-12).


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<gallery>
<gallery>
7904a-front.jpg |7904A
7904a-front.jpg |7904A
File:7904a lvps1.png|7904A Low-voltage Power Supply Schematic
7904a lvps1.png|7904A Low-voltage Power Supply Schematic
7904a-h-v.jpg | 7904A Horizontal and vertical amplifiers
</gallery>
</gallery>




[[Category:7000 series non-storage mainframes]]
[[Category:7000 series non-storage mainframes]]

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