24-05-2016, 01:25 PM
I've got a soft spot for Telequipment 
I had a very similar model many years back. It was in a skip at university. No idea why, as it worked perfectly. I used it to help repair my main 'scope, and kept it as a second 'scope for many years. Eventually, the mains transformer developed a shorted turn - it all worked, but the transformer got really hot after about 15 minutes. I gave it away - no idea what happened to it from that point.
Lovely, sharp displays on these old beasts.
In fairness, even the best analogue 'scopes have some degree of warm-up drift. In the case of my DM63, it's about 1 horizontal division - depending on how cold the workshop is when you start. Hardly worth worrying about. How much does yours drift?
My DM63 is still my default 'scope. I like the "upright" form factor as it occupies less bench space than the modern "horizontal" style. I use a V3 differential plugin for many tasks, and finding the functionality of that in a more modern device wouldn't be impossible, but non-trivial. For higher bandwidth stuff, I have a 100MHz Fluke/Philips unit, which is nice, but has a noisy cooling fan. For non-repetitive stuff, the Rigol DS1054Z is invaluable. But the Telequipment still does the most for me. I have a couple of spares.
I also like the D83 - I have 1 good one, and 2 bad ones that will make a good one eventually. I really should think about selling them, as although they have a higher bandwidth, the DM63 is more use to me.
We had hundreds of the older valved models here, but they'd all been disposed of by the time I joined. They did sterling service, and faults were usually easy to rectify.
I had a very similar model many years back. It was in a skip at university. No idea why, as it worked perfectly. I used it to help repair my main 'scope, and kept it as a second 'scope for many years. Eventually, the mains transformer developed a shorted turn - it all worked, but the transformer got really hot after about 15 minutes. I gave it away - no idea what happened to it from that point.
Lovely, sharp displays on these old beasts.
In fairness, even the best analogue 'scopes have some degree of warm-up drift. In the case of my DM63, it's about 1 horizontal division - depending on how cold the workshop is when you start. Hardly worth worrying about. How much does yours drift?
My DM63 is still my default 'scope. I like the "upright" form factor as it occupies less bench space than the modern "horizontal" style. I use a V3 differential plugin for many tasks, and finding the functionality of that in a more modern device wouldn't be impossible, but non-trivial. For higher bandwidth stuff, I have a 100MHz Fluke/Philips unit, which is nice, but has a noisy cooling fan. For non-repetitive stuff, the Rigol DS1054Z is invaluable. But the Telequipment still does the most for me. I have a couple of spares.
I also like the D83 - I have 1 good one, and 2 bad ones that will make a good one eventually. I really should think about selling them, as although they have a higher bandwidth, the DM63 is more use to me.
We had hundreds of the older valved models here, but they'd all been disposed of by the time I joined. They did sterling service, and faults were usually easy to rectify.
