Re: Question: XY (XYZ or Vector) instrument CRT, replacement with an LCD ?
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I looked at the 1700 page data sheet for the Arm Cortex 32 bit CPU and the much smaller development board data sheet (30 pages?). It looks complicated! I have a RaspberryPi 3 inserted in a SmartiPi Touch Case with wireless ISB keyboard. I think it would be easier to use and it has a higher resolution screen. $350 Cdn if I remember correctly. It may be easier to replace in 5 years time when the ST becomes obsolete.
I am impressed with the video and would love to add an LCD to my HP4192A Impedance Analyzer that has no CRT and expects an XYY analog pen plotter. Anyone interested please contact me privately and maybe we can do something. I also have a Tek 576 Curve Tracer but the CRT is good and I have a spare. I can see the advantages of updating it. Keep me in the loop,?I may be able?to contribute. I updated my HP8753B with the Newscope LCD and am delighted with it. My HP8757C has a colour LCD and is excellent but a bit dim in bright lighting, as is my HP54542C DSO. Getting a digital screen capture would be great as well. My 3 HP mentioned have ways to get a screen capture (John Miles 7470A emulator, Prologix USB/GPIB, and a USB floppy reader). What language is the software written in? I am struggling with a decision to learn Python but have pretty well decided to stick to C which I use for programming PICs. Python would be a huge distraction and time burner for me. Peter
hi,
In the event of instrument CRT death, one might want to do a replacement having an LCD display:
The question is:
-- are there any existing modules ( or schematics, or projects )? that might be used for an HP older instrument having an XY (XYZ or Vector) type CRT that would allow replacement of the CTR with an LCD ( & also provide a laptop connection for data manipulation & saving ) ?
This question is for a Vector type XY or XYZ CRT?? found in some older scopes, ... & ? for example the Tek 576 Curve Tracer ( CT ) :
??? {??? Raster type CRT to VGA type modules can be had inexpensively on eBay for ~ $29,etc.? .... and is not the topic in this thread }
There has been some recent discussion about this for the Tek 576 CT on that Groups .io .... without a resolution as of yet,
but the same solution *might* be of use to older HP instruments as well ?
/g/TekScopes/topic/86718765
and
/g/TekScopes/topic/69490299#164207
Anyway, looking for a solution to this XY ( XYZ, Vector )? type CRT to LCD problem.
{ Not wanting to replace the CRT with another CRT ! }
There is an example of someone doing a retrofit add-on LCD module for an HP 141T 18GHz SA:
The individual did not make any further YouTube video upgrades to that project; but it is a start !
The discussed ST LCD module is not too expensive ( $55 to $130 ).
The video Arcade Game folks do have an expensive module that can do this for their Vector type CRT's,
... discussed in the Tek Curve Tracer CRT discussion : /g/TekScopes/topic/86718765
However, this Tempest module ( ~$525 !! ) & the NewScope modules are way too expensive !
-- So, would not be buying those at all !
So, looking for a less expensive module or schematics of such to attempt a DIY for the XY (XYZ or Vector) CRT to LCD replacement.
>> Anyone having specific detailed technical knowledge for an XY (XYZ, Vector) to LCD module, or schematics? to the above issue ?
? would be appreciated.
thank you,
rick
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