[NJARC] Oscilloscopy Questions...

[Scott Roberts]

Yes John- Intentionally this time!

You forgot the pronunciation: "Oscilloscopy" (v) ah-syl-ahs-kopy: the study and science of the oscilloscope.

I was muckering about with it last night, hooked a speaker up to the Y input, and "watched" the soundwaves received for a bit... If I had a more sensitive microphone, I could build me an ekg!

Scott

--- On Thu, 8/26/10, John Ruccolo <jr6v6gt at yahoo.com> wrote:

> From: John Ruccolo <jr6v6gt at yahoo.com>
> Subject: Re: Oscilloscopy Questions...
> To: "Scott Roberts" <ng19delta at yahoo.com>, "NJARC Radio Club" <njarc at mailman.qth.net>
> Date: Thursday, August 26, 2010, 1:22 PM
> Hi Scott,
> 
> Oscilloscopy Questions....Oscilloscopy? A typo? But I think
> you may have 
> invented a new word.
> 
> Oscilloscopy -- the science and study of the Oscilloscope.
> 
> JR
> 
> 
> 
> ----- Original Message ----
> From: Scott Roberts <ng19delta at yahoo.com>
> To: John Ruccolo <jr6v6gt at yahoo.com>;
> NJARC Radio Club <njarc at mailman.qth.net>
> Sent: Wed, August 25, 2010 12:52:38 PM
> Subject: Oscilloscopy Questions...
> 
> Hi All- (I am reposting this to the reflector with
> additional information...)
> 
> My original question to John, who suggested posting it
> here: 
> "I have been looking at e-bay for ossci probes(I have none
> for the nice LabVolt 
> 798 on which I can find no info) and I am confused- should
> I just buy by price 
> or what? I need 4- one for the output & 1 for each of
> the three inputs. I find 
> something like 500 on the buy it now for 100mhz
> Oscilloscope  Probes... I really 
> don't want to buy direct from Hong Kong or China if I can
> buy from a dealer in 
> the US. I know to look for a 1x/10x What else should I be
> looking for? Should 
> one be high volt (<2k volts)? Or not a worry?"
> 
> The oscilloscope has 4 main BNC connections on the front- 
> Ch. 1 or X in
> Ch. 2 or Y in
> Ch. 3 or Ext Trig In
> CH. 1 Output 25 Mv/DIV into 50 ohm Term
> and one on back:
> Z AXIS INPUT Blanked by TTL H Level
> 
> Figure I need a connect up for each one...
> 
> I futzed with it a bit last night, and found it has some
> neat stuff, which I am 
> sure will really be useful once I have probes and some idea
> what I am doing... 
> When on, it gives two traces to start- and they can be run
> independently, or 
> both at the same time. You can also get them to "Add" which
> forms a third trace. 
> Then, you can pop out a knob, and get a third channel
> trace, and pull another, 
> and you get "QUAD", another trace setup! As mentioned
> previously, there is a 
> "CH.1 OUT" BNC on the face as well. I have a rough idea how
> to make it do 
> things, but no real understanding of what I am doing with
> it yet. I have figured 
> which controls do the basic operations- move the trace up,
> down, left, right, 
> etc; intensity, focus.
> 
> More detailed info: 
> The "V-Mode" panel includes: CH-1, ADD, CH-2, CHOP(which
> puts all the traces up) 
> and ALT, and X-Y
> 
> To the left of the CH1 & CH2 Volts/Div knobs are an
> "AC-GND-DC" selector for 
> each.
> 
> There is a CH-2 INV switch.
> 
> A Calibration connection.
> 
> Horizontal Display panel offers A, and a selector switch
> forb labelled Trigger & 
> TV-H(A at TV-V) on the one side of the switch, AFTER DLY on
> the other, with the 
> parameters "INTEN BY B, ALT, B" as its choices.
> 
> Sweep Mode offers Auto, Norm, and Single.
> 
> The A-Trig panel has COUPLING(AC, HF rej, DC, TV-V, TH-H)
> and SOURCE(ALT, CH-1, 
> CH-2 LINE, .2V/DIV, 2V/DIV [these last two are associated
> with CH-3, or EXT TRIG 
> IN BNC])
> 
> There is a SLOPE control, which basically inverts the sine
> polarity, as well as 
> the usual VOLTS/DIV for CH-1 & CH-2 (5mV-5V, with a
> Variable x10 mag switch, 
> .5-2mV) and one main Time Delay(dual switch- A & B) .02
> uS to 50 mS, on both, 
> and .1-.5 S on A ONLY. Also a vernier DLY Time Multiplier
> and an AB TRACE SEP 
> switch, with an A VARIABLE pull out center knob.
> 
> I can get a sine wave on it, but not much else- and that is
> only when in certain 
> positions...
> 
> Thanks for any help!
> 
> 
> Scott
> 
> 
> --- On Wed, 8/25/10, John Ruccolo <jr6v6gt at yahoo.com>
> wrote:
> 
> > From: John Ruccolo <jr6v6gt at yahoo.com>
> > Subject: Re: [NJARC] tv/radio repair shop inventory
> for sale
> > To: "Scott Roberts" <ng19delta at yahoo.com>
> > Date: Wednesday, August 25, 2010, 12:39 AM
> > Scott,
> > 
> > I would put that question on the reflector, or ask Al
> Klase
> > and/or Steve 
> > Goulart, since they're way better than me with
> scopes.
> > 
> > Why do you need a probe for the scope.s *output*?
> What's up
> > with that??
> > 
> > JR
> > 
> 
> 
> 
>