Hp3582a CRT to convert to LCD

[squadchannel]

Sorry, I determined from the front panel bezel that it was a 1345A, but apparently not.

lcd drawing from XYZ, would need a high speed ADC.

XY is just voltage vs XY position, Z is luminance.
You can draw with a regular scope; if you input in XY mode, you will see the same thing. can't input the Z signal, the luminance will be constant.

[Sergio68]

No worries ! Don’t be sorry.
I’ll try to hook a scope.

[timeandfrequency]

So I was curious if connecting a scope to those points XY mode could produce something (see the photos, it’s the analog entries of the crt command card )

So, four signals on small coax cables. It would be interesting to know if the shields of these coax are all at the same potential.

[Sergio68]

I’ll tell you what’s inside those wires.

[bsdphk]

So I was curious if connecting a scope to those points XY mode could produce something […]

That picture is the HV drive card, that's not the right place.

Try looking at J4 and J5 on A1, I think those are the aux X+Y outputs at 0-1V DC, and J3 seems to be the Z to go with them.

The manual situation is somewhat messy for the 1345, because there are a number of different versions and options.

Some of the better copies of the doc is included in other instruments manuals, notably the 3577 which may have been the first time it was used.

On version had three 3-pin connectors where XYZ could be looped through external circuitry to multiplex analog signals, I think the 8981 may have used that model.

Ohh, and one more thing:  If your problem is "badly out of focus" you should check if there is an external focus pot attached, or if there should have been.  Check the jumper (it's in the manual)

[timeandfrequency]

It would be so nice to provide some links to all of these service and user manuals

[Sergio68]

Oh cool! Thanks a lot bsdphk!
I’ll share the links for operating and service manuals.
Of course and share more photos.
Thanks again!

[Sergio68]

Hi! Christmas time…so very busy!
Here the operation manual :

https://www.artisantg.com/info/Agilent_3582A_Manual.pdf?srsltid=AfmBOor7U-n3wXG4w5s34k4_gLAB8ZTvHohyMD9vAgtpDL9F-0oWprLL

[Sergio68]

And service manual :

http://www.petergottlieb.com/docs/hp/3582/hp3582a_svc.pdf

I wish you a happy and merry Christmas !
Thanks a lot for support.
I’ll probably start soon some tests.

[MathWizard]

I know the basic's of CRT's, but not how all the data was encoded. So how did they do it on Tekronix DSO's with CRT's ? I guess the main board outputs some digital data to some DAC's that drive the vertical HV.

So for 1980's scopes, what sort of data speeds, and how many channels and voltages would you have to monitor, to get all the data for an LCD ? So what size of say an AVR MCU, or STM32 would you need ? Would AVR even be fast enough, or maybe you would need a few of them.

I'm just learning how my Stereo works, and writing some Assembly programs to help a few of it's IC's that are acting up. And I have a nice new fast DSlogicPro32 I want to try out on something, like my old Tektronix. In fact I'd make the screen bigger.