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neuron
Joined: 23 Feb 2019 Posts: 7 Location: In a Server
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Posted: Sat Feb 23, 2019 5:33 pm Post subject: Oscilloscope UNAOHM G4020 = BECKMAN 9020 = Voltcraft_2040 |
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Hi,
A friend offered
Oscilloscope UNAOHM G4020 = BECKMAN 9020 = Voltcraft_2040
In first hours worked ok ... I saw the 0,2 V 1000Hz
and other signal in the cinescop.
But now I only see 1 or 2 dots (channel 1 or both or ch 2)
I can move the dots UP and DOWN, LEFT and RIGHT
so the screen - cinesc. is working.
I test the trigger, connect CAL 0,2 to ch 1 or 2
and the dot is in 1 , 2 or more lines up depend on VOLT/DIV
INV - and the dot go down invert.
A sinos. wave, I can rotate TRIG LEVEL and the dot follow
the wave.
But I can't see the wave in display
Some examples of scope:
youtube.com/watch?v=3nBYp1pN40U
youtube.com/watch?v=fPq1KgQ5ggQ
youtube.com/watch?v=5osskamWJHg
Manual and schemat. I have the French and Germany version.
archive.org/details/voltcraft_Voltcraft_2040_Oscilloscope_Service_manual
eserviceinfo.com/downloadsm/63296/Beckman%20Industrial_9020.html
Can you please provide help?
Thank you,
Ruy |
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neuron
Joined: 23 Feb 2019 Posts: 7 Location: In a Server
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Posted: Sun Aug 11, 2019 8:01 pm Post subject: Re: Oscilloscope UNAOHM G4020 = BECKMAN 9020 = Voltcraft_204 |
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neuron wrote: | Hi,
A friend offered
Oscilloscope UNAOHM G4020 = BECKMAN 9020 = Voltcraft_2040
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It's working and calib.
Thank you,
Ruy _________________ Work with servers - OpenBSD, NetBSD, FreeBSD, Linux.
Love Oscilloscope , Repair, Satellite Dish, Multimeters.
Have a Big Satellite Dish farm. |
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