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#11
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Re: Analogue Scope buy or not
Hi Andy
Yep that’s plenty for now Thanks I will see how well it works before I spend on new probes but hope its ok Will be checking out you tube for tutorial Vids have to see if maplin still do good paperback books too
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The Blues man Turntable Rega 3 custom RB250 with ortofon 2M Blue /other goldring 1042 /WD phono2 /WD CF pre custom converted /WD psu2 /home built JE Labs Single Ended 6SL7/KT66/Speakers Frugal horns Mk1s Other turntables AR EB101/Thorns TD150mk2/Thorns TD160mk2 If you have trouble reading my posts its because I am a dyslexic member |
#12
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Re: Analogue Scope buy or not
They do the R A Penfold book, or as I call it "The Ladybird Book of Scopes".
It will get you started I used it. I look for books at radio fairs and charity shops. Bound to be an online resource and Morgan Jones' books have a scope section in the later editions. ETC ETC ETC........................................ |
#13
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Re: Analogue Scope buy or not
Quote:
I can't remember the last time I used the probes. Maybe they'd be more useful for tracing/fault finding than testing but I made up several connector leads using 4mm and BNC cables. The Maplins flexible test cable and stackable 4mm plugs are good and a couple of BNC/BNC cables with one end chopped off and tailed into 4mm plugs. And a few adaptors, Maplins again, Phono to BNC etc |
#14
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Re: Analogue Scope buy or not
If you are going to use the 'scope to its full advantage then you will definitely need a pair of probes as they will reduce the loading on the circuit under test/inspection.
You do not need anything fancy but 10:1 (switched if possible to 1:1). As the 'scope is 20MHz width then 20-40 MHz probes will be fine, there are plenty on eBay at about £10.00. For amp testing then a good pair of 8R metal clad w/wound resistors mounted on a heatsink ( big flat ali plate) with BNC cables to terminate in the scope. John |
#15
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Re: Analogue Scope buy or not
Hi Andy/Richard/John/All
Thanks for all the tips General Shopping list for scope Book how to use helpful New 20 MHz probes set Some screened 50R cable TBNC/BNCs 4mm plugs Budget used Single Generator of some sort Have I forgotten anything?
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The Blues man Turntable Rega 3 custom RB250 with ortofon 2M Blue /other goldring 1042 /WD phono2 /WD CF pre custom converted /WD psu2 /home built JE Labs Single Ended 6SL7/KT66/Speakers Frugal horns Mk1s Other turntables AR EB101/Thorns TD150mk2/Thorns TD160mk2 If you have trouble reading my posts its because I am a dyslexic member |
#16
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Re: Analogue Scope buy or not
Hi Colin et al,
Don't use TNC, they are screw on type, and not readily available at low cost, stick to BNC. Unless you are doing a lot of work at RF frequencies (i.e. 20MHz upwards) it really doesn't matter if you use 50R or 75R coax cable, but do buy the correct BNC for the cable as often they are not interchangeable. Croc clips, both small and large, on the ends of the coax are useful for attaching to circuitry. John |
#17
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Re: Analogue Scope buy or not
If it comes with a probe, you may be lucky and it may be a switched x1 x10 one. That'll save you a few bob if it is.
A. |
#18
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Re: Analogue Scope buy or not
Would a test CD be suitable for use?
I have the HIFi news test CD from the 80's and its got a selection of test tones and sweeps and I just remembered i have it. if you have a gash Hi Fi Cd player you could use it or even maybe your laptop? Ok up to 20kHz only of course. But most of your diagnostics will be done with 1kHz sine waves to begin with. Theres odd DIY circuits about, might be worth looking at. A. |
#19
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Re: Analogue Scope buy or not
Found this link, lots of others. Fancy a go meself and adapt it for variable frequency.
http://www.ebay.co.uk/itm/Sine-Wave-...UAAOSwDNdV2vDT |
#20
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Re: Analogue Scope buy or not
Just ordered a used copy of the book Cost me £8.43 from Amazon someone wants £34 for used copy for a £3.99 Book maplin have it but won’t deliver it collect only
__________________
The Blues man Turntable Rega 3 custom RB250 with ortofon 2M Blue /other goldring 1042 /WD phono2 /WD CF pre custom converted /WD psu2 /home built JE Labs Single Ended 6SL7/KT66/Speakers Frugal horns Mk1s Other turntables AR EB101/Thorns TD150mk2/Thorns TD160mk2 If you have trouble reading my posts its because I am a dyslexic member |