Actually the CRT was built for Tek. but since is was a custom it can be though of as a Tek CRT. I'm not sure about the monitory assembly, sometime this year I maybe able to get the full specs on the CRT if anyone is interested.
-pete Ex Tekkie On Thu, May 19, 2016 at 11:18 PM, Eric Smith <[email protected]> wrote: > On May 8, 2016 9:33 PM, "Eric Smith" <[email protected]> wrote > about the CRT of the color monitor of some models of the Tektronix > DAS 9100 logic analyzer: >> It is custom, and it is tri-color (red, green, yellow), but it's a >> beam penetration CRT that is not a modified version of any normal >> color CRT. There is no shadow mask, and it can only draw one color per >> field, like the 1951 CBS field-sequential color television, though >> that was done with a color wheel while this is done by modulating the >> anode voltage (and possibly the deflection drive as well). > > On Mon, May 9, 2016 at 7:45 AM, Pete Lancashire <[email protected]> > wrote: >> I must be thinking of a different model. > > Now that I've looked at volume 1 of the DAS 9100 service manual, I > believe my information was incorrect. Volume 1 is scant on details of > the color monitor, but it does say that the anode voltage is 21kV. If > it was a beam-penetration CRT, it would have to be switched between > different voltages for red and green. (And yellow, if that was > generated with its own phosphor layer rather than as two passes with > red and green.) > > The color monitor is manufactured by Tektronix using a CRT also > manufactured by Tektronix. The monochrome version uses a monitor OEM'd > from Motorola. >
