I barely know how to use one, so I don't want to spend a ton, but I would like to learn to use one and it may come in handy in some TV repairs. I have noticed the USB versions are much cheaper than a table top unit but I am worried they may be inferior. Are there specs I should be looking for in a unit? I don't want to buy something that is not sensitive enough or just not worthy of the job. I also know that the probes make a difference, but that's as much as I know. What probes should I be looking for?
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Re: I would like to buy a USB oscilloscope. Can you help?
Don't bother, they ARE inferior and slow... with bandwidth of about 5-10 Mhz compared to 50-60 Mhz for the cheapest desktop ones. -
Re: I would like to buy a USB oscilloscope. Can you help?
Thanks, that is what I figured. I will search for a nice used one.Comment
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Re: I would like to buy a USB oscilloscope. Can you help?
Even a 50 MHz analogue scope will be more useful than a crusty USB scope.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: I would like to buy a USB oscilloscope. Can you help?
The sampling rate is often specified for only one channel.
Also take into account operating system support (especially 64-bit) - a scope with a USB port for recording (and for some models, adding brief notes) is a good feature.My first choice in quality Japanese electrolytics is Nippon Chemi-Con, which has been in business since 1931... the quality of electronics is dependent on the quality of the electrolytics.Comment
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Hello.
I have jut got my first analogue oscilloscope. An Isotech 620 20MHz.
I want to learn how not to damage it, and I found instructions on the internet obscure.
They talk about ground, earth, floating ground, this, that....
But they don't actually say anything anything useful so far.
I want to know:
Don't connect exactly this to exactly there or it blows up.
For example, I am tracing a signal from a function generator in an audio amp, or testing for voltages in different parts of a circuit.
I want to know what not to connect... -
All,
Some of you have helped me in the past and I am very appreciative of all the help! (I have fixed TVs/Stereos/ and other small appliances with your efforts...Thanks so much!!!
Today I went to a local HAM Radio Festival. It was one of the smaller ones in our area. My stepfather is the HAM operator. I tinker in electronics but am a Software Programmer (27 years now).
I was looking for a few odds and ends for some electronics work I have to do for the household/farm. Typically these type of shows have the grab bags or a electronics vendor... -
I have recently acquired a Dynamco D7100 analogue oscilloscope without a user manual. As this is the first time I have owned or used an oscilloscope I would like to try and find an instruction book. The manufacturers no longer hold any information and a Google search only found one site but when I downloaded a 'service manual' all I got was gobbledegook. Any help would be gratefully appreciated or even pointers to a generic manual where I could learn more. -
Hi, i have a Lenovo S145 that after 20 seconds shutdown and restart (it's working correctly on thse 20 seconds)
everything seems ok, but on Vcore inductor ( this is an i3 with just 1 switching power supply for CPU)
there is an output to teh CPU with a spike.. seems that inductor can't handle the input...
replaced the capacitor (330) and the inductor (R15) without any change
any idea? very thank you!
input of the inductor seems as usual... only strange thing is that the upper/lower voltages seems to be 21V (main power line is 19.3) ... but not sure this... -
Searched online but wasn't able to find. Trying to locate a copy of this document - AutoLeap Oscilloscope Handout.
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