Beam-penetration color CRT, Tektronix DAS 912x (was Re: Nice LAB11 brochure.)

Pete Lancashire pete at
Sun May 8 10:57:40 CDT 2016

I thought the Tektronix DAS used a custom tri-color crt, where the
blue phosphor was replaced with yellow.

On Sat, May 7, 2016 at 10:24 PM, Eric Smith <spacewar at> wrote:
> I got out my Tektronix DAS 9129 logic analyzer mainframe, which uses a
> red/green/yellow beam penetration CRT.  It uses raster scan, whereas
> my other device with a beam penetration CRT, the HP 1338A (also
> red/green/yellow) is a vector (X-Y) display.
> I'm pleased to find that the 9129 passes self-test and the display
> works. Unfortunately I do not have any logic analyzer acquisition or
> pattern generator modules for it, so other than admiring the pretty
> display, it's only useful as a boat anchor.

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