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===Microcontroller-based Readout Board=== | ===Microcontroller-based Readout Board=== | ||
Finally, from 1989/1990 on, a third generation readout board designed around an 80C31 micro-controller replaced the previous versions in the last series of [[7104]], [[R7103]], [[R7844]] | Finally, from 1989/1990 on, a third generation readout board designed around an 80C31 micro-controller replaced the previous versions in the last series of [[7104]], [[R7103]], [[R7844]], [[7904A]] and [[7623B]] models. This version no longer used any Tek-made special ICs, manufacture of which had been discontinued by that time. The board is part SMD, part through-hole. It is described in [http://w140.com/Tektronix_7904A_OCRed_by_Tabalabs.pdf this version of the 7904A manual] (pages 288 through 291 describe the EPROM version above, while the 80C31 version is shown on pages 380 through 391). | ||
<gallery widths=300 heights=300> | |||
7000-readout-ctl-1.jpg | top of board | |||
7000-readout-ctl-2.jpg | bottom of board | |||
7000-readout-ctl-3.jpg | | |||
Microcontroller based readout board block diagram.jpg | Block diagram | |||
</gallery> | |||
==Literature== | ==Literature== |