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| Getting a scope again after decade. Fill gaps im my research of the $300 range? |
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| SureSh0t:
Very sad to be here having had a Tek 7904 loaded with plugins about a decade ago before my dad forced me to sell it to pay rent/make room. I know nothing about the latest Chinese products so maybe y'all can fill me in on what's good? So I just want to be able to work with most solid state outside RF. I'm pretty much a DMM+scope+generator+supply guy. 400-500Mhz bandwidth is enough for me, I like having 1Gs/s and 2mV/div or better sensitivity for those finicky components and finding noise without spending on an analyzer. I'm open to Tek or HP but I know Tek will usually be the way to go. I prefer digital storage but it's not a requirement I guess. Right now my shortlist looks like: TDS500 series (stretch) 2246 or 2465 TDS400 series HP54520 Not all tof them are ideal but good enough. Let me know what else I should look for, especially Hantek/Sigilent/Rigol as I only know some decent DMM and generators by them. |
| tggzzz:
Ignore the sample/sec spec - that's marketing wank that generates more heat than light. 2465A and 2465B have battery backed RAM that causes problems, plus electrolytic capacitors that puke over the ADC. 2465 doesn't have battery backed RAM and electrolytic caps puking over the ADC, but has the trad Tek squirrel cage fan with its fragile collett. All three have RIFAs (must replace) and it is best to replace the main PSU electrolytic. All very well documented elsewhere. Isn't the HP54xxx series the one with the PSU caps that puke and damage the PCB? Don't forget the Tek 485, which has a real 50ohm input unlike the others. Several 15V tants on a 13V rail need replacing. Don't forget the cost of the probes relevant to the type of measurements you will be making. |
| SureSh0t:
Thank you for those component insights! That's why I'm here! --- Quote ---Don't forget the Tek 485, which has a real 50ohm input unlike the others. Several 15V tants on a 13V rail need replacing. --- End quote --- That era of Tek really was special wasn't it? I get why they're still around. The 485 is a good candidate. |
| SureSh0t:
Plan to be using pretty standard 10x probes max nothing too fancy. Right now I just have a stack of discrete audio to repair. |
| wasedadoc:
--- Quote from: SureSh0t on May 08, 2023, 03:05:06 pm ---Very sad to be here having had a Tek 7904 loaded with plugins about a decade ago before my dad forced me to sell it to pay rent/make room. --- End quote --- You should have sold your dad and kept the scope. :) |
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