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Mod 709V appears to be an adaptation of [[5110]] scopes for radial vibration display made by Tektronix in Beaverton for [https://en.wikipedia.org/wiki/Bently_Nevada Bently Nevada] and possibly others. | Mod 709V appears to be an adaptation of [[5110]] scopes for radial vibration display made by Tektronix in Beaverton for [https://en.wikipedia.org/wiki/Bently_Nevada Bently Nevada] and possibly others. | ||
Externally evident elements of the modification touch several components | Externally evident elements of the modification touch several components: | ||
* Mainframe: | * Mainframe: | ||
** Graticule illumination added with Tektronix control knob | ** Graticule illumination added with Tektronix control knob | ||
** Intensity input BNC changed to yellow binding post | ** Intensity input BNC changed to yellow binding post | ||
** Bently Nevada name & logo on the two noted examples | ** Bently Nevada name & logo on the two noted examples | ||
* 5B10N: | * 5B10N: | ||
** External input BNC changed to green binding post | ** External input BNC changed to green binding post | ||
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*** L vs R | *** L vs R | ||
** Cal control deleted | ** Cal control deleted | ||
* 5A19N (two): | * 5A19N (two): | ||
** Inverting input red binding posts changed to light blue | ** Inverting input red binding posts changed to light blue | ||
** Cal control deleted | ** Cal control deleted | ||
Example scope serial numbers: | Example scope serial numbers: |