NBTV Television Analyst
Posted: Sun Mar 29, 2020 3:52 pm
Some thing i have always liked is the Television Analyst a device used in the past by TV service men to use to adjust the Televisions they were repairing ...
Back in the day if they go up early and did their adjustments then i am sure there would of been a few Test cards broadcast ,perhaps the poorer repair men had to do this
The idea here is to make a 2 CRT device again one crt is the monitor tossing up if this monitor can this time switch between a dual monitor and a scope and the 2nd CRT is a Flying spot scanner for a multi system test card video signal ..unlike the original shown above this one will do NBTV .
Well i am not happy unless i have something to think about ! so this is the next project to keep me busy for the next few months and Thanks to Andrew once again i still have a abundance of CRTS very much so the 3Bp1 also cases for the size of this CRT are not easy to come by but i have something .
Since i have more 3Bp1's than other types 2 of these will be used once again and don't worry the last 2 CRT project the binocular is safe and sound in a box out of the way for now ,but looking at what junk i have laying around in my shed i found a old DVD player case just the right size .
Worked out the best place to mount the viewing CRT the slot where the dvd player was i will use as a panel
Its more along since than this photo the CRT bezel is bolted on now
On the Flying spot scanner side i could use a PMT as original but i think from my experiments in the past on NBTV light transmission if i can do this with an led and a solar cell a CRT and a solar cell should work also ..space and power supply make it a better idea to me .
So the Flying spot scanner is some thing i am still thinking about but i think i will mount it about there.
What i would like it to do is make it an easier video generator monitor for NBTV limited i suppose to how small a raster dot the Crt can do for a correct result so it should be able to do a few line rates.
I just really need a few zener diodes pretty much have nearly every thing else for this for this ,and need to do this like with all CRT projects carefully and safely .
EDit
35mm slides for the FSS idea so far i may project focus the CRT raster to the slide for higher definition scan see how the optics go when i get there .
Back in the day if they go up early and did their adjustments then i am sure there would of been a few Test cards broadcast ,perhaps the poorer repair men had to do this
The idea here is to make a 2 CRT device again one crt is the monitor tossing up if this monitor can this time switch between a dual monitor and a scope and the 2nd CRT is a Flying spot scanner for a multi system test card video signal ..unlike the original shown above this one will do NBTV .
Well i am not happy unless i have something to think about ! so this is the next project to keep me busy for the next few months and Thanks to Andrew once again i still have a abundance of CRTS very much so the 3Bp1 also cases for the size of this CRT are not easy to come by but i have something .
Since i have more 3Bp1's than other types 2 of these will be used once again and don't worry the last 2 CRT project the binocular is safe and sound in a box out of the way for now ,but looking at what junk i have laying around in my shed i found a old DVD player case just the right size .
Worked out the best place to mount the viewing CRT the slot where the dvd player was i will use as a panel
Its more along since than this photo the CRT bezel is bolted on now
On the Flying spot scanner side i could use a PMT as original but i think from my experiments in the past on NBTV light transmission if i can do this with an led and a solar cell a CRT and a solar cell should work also ..space and power supply make it a better idea to me .
So the Flying spot scanner is some thing i am still thinking about but i think i will mount it about there.
What i would like it to do is make it an easier video generator monitor for NBTV limited i suppose to how small a raster dot the Crt can do for a correct result so it should be able to do a few line rates.
I just really need a few zener diodes pretty much have nearly every thing else for this for this ,and need to do this like with all CRT projects carefully and safely .
EDit
35mm slides for the FSS idea so far i may project focus the CRT raster to the slide for higher definition scan see how the optics go when i get there .