Hoffman Amplifiers Tube Amplifier Forum

Amp Stuff => AmpTools/Tech Tips => Topic started by: jasperok on April 27, 2008, 12:41:41 pm

Title: know any beginners tests for using a scope?
Post by: jasperok on April 27, 2008, 12:41:41 pm

Hi
just got my 20mhz scope and would like to get to know it!!
google not turning up much for basic noobie guides and little things you can test to get used to using it as a tool -
something like high school science i am thining, testing a 9v battery or something like that.
dont have a frequency gen (yet)
know of any good resources#??

thanks

Title: Re: know any beginners tests for using a scope?
Post by: RicharD on April 28, 2008, 12:06:56 am

How about the output of an AM FM radio?  Get some old throw away battery powered radio.  You'll have a real hard time hurting a scope with that.  Once you get a feel for it, poke around inside the circuit.  Tear it apart and put it back together.  

Title: Re: know any beginners tests for using a scope?
Post by: Fresh_Start on April 28, 2008, 12:32:07 pm

The Tone Lizard offers his "Idiot's Guide to Oscilloscopes" (http://www.tone-lizard.com/Oscilloscopes.htm)

I also found some Oscilloscope Tutorials (http://www.oscilloscope-tutorials.com/)

Unfortunately, I haven't bought an oscilloscope yet so I don't know how useful these links are.  They seemed helpful to the unintiated (me).

Chip

Title: Re: know any beginners tests for using a scope?
Post by: sawdust on April 28, 2008, 06:40:43 pm

http://www.tone-lizard.com/Table_Of_Contents.htm

Some good info.

Title: Re: know any beginners tests for using a scope?
Post by: PRNDL on April 29, 2008, 08:36:35 am

For tube amps, it is helpful to review a schematic that includes AC test voltages, which will give you an idea of how to set the input voltage and what to expect for gain and insertion loss of various stages.

Modern Fender amps have this info on the schematic:  Blues and Pro Junior, Hotrod Deluxe and Deville, and the Red Knob Twin.