Handy Oscilloscope For Your PC | |
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07-01-2008
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| cerca trova...  Join Date: 01-01-2000 Location: East Anglia
Posts: 4885
Thanks: 16
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Blog Entries: 1 My System: Triple Dragon with HDD/USB stick, Humax HDCI2000, Echostar AD3000ip & SR8700, Fortecstar 5100CIUltra, Aston Simba, RSD ODM300. Swedish Microwave 1.2 Motorised dish / Invacom C120 twin LNB driven by the AD3000. 3 other fixed dishes. Diablo/Mrev Cams  Fighting the evil 3 Dragons under the Don Quixote banner,Sir Llew persevered where others failed |
Been trying this little 'virtual oscilloscope' from _www.zelscope.com/ It takes the signal applied to the line in of your soundcard and gives you a nice display of any AC signal within the frequency range of the soundcard's input. Of course as the input is blocked by a capacitor, you can't read DC voltages, but the voltage level of any AC waveform is shown. With restrictions of course - ONLY FOR READING LOW VOLTAGES! SEE THE WARNING ON THE ZELSCOPE SITE! The upper frequency limit obviously depends on your soundcard (normally ~20 kHz) but I had no problem going higher - I found it handy for checking some outputs of my Echostar AD3000ip. My 'normal' oscilloscope is not digital, so I don't have the facility to inspect a waveform - this is where this 'scope is very useful. Some possibilities - Inspecting the DiseqC pulses out to your LNB. Reed pulses from your dish motor. AF waveforms from the audio output of your STB, or indeed anything audio. Following posts show some captured waveforms.
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07-01-2008
| #2 | ||
| cerca trova... Join Date: 01-01-2000 Location: East Anglia
Posts: 4885
Thanks: 16
Thanked 232 Times in 216 Posts
Blog Entries: 1 My System: Triple Dragon with HDD/USB stick, Humax HDCI2000, Echostar AD3000ip & SR8700, Fortecstar 5100CIUltra, Aston Simba, RSD ODM300. Swedish Microwave 1.2 Motorised dish / Invacom C120 twin LNB driven by the AD3000. 3 other fixed dishes. Diablo/Mrev Cams Fighting the evil 3 Dragons under the Don Quixote banner,Sir Llew persevered where others failed | Here's the 22kHz output from my Echostar AD3000ip. For the connection to the soundcard, I used a cable with one end an f-plug, and an RCA plug on the other going to a RCA - headphone plug adaptor.
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07-01-2008
| #3 | ||
| Amo Amas Amant Admin  Join Date: 18-11-2004 Location: NW England (Siberia)
Posts: 8121
Thanks: 18
Thanked 253 Times in 236 Posts
My System: IDD CI24 ECONO MM Penta 1.20 Galaxy II 1.2Mtr Polar MTG yes it has been on the arc for 21 years and is still driven by a modified wiper motor from a Ford Anglia. It's like me sometimes groans but always performs  Saved us from the black plague of ignoratio elenchi, he awaits a special badge with jugs |
Very nice Llew, if I ever get the time I may have a go with that, looks like fun, I have fond memories of the Ecad software used for electronic simulation, used to tear my hair out at times just getting my circuit to produce a waveform
__________________ War does not determine who is right, it determines who is left! Formerly toppervte33h whose six pack has turned into a keg Help support this web site by making a donation Or use other options to help support Sats UK Show Your Support by clicking the button Thank you. Freddie Flintoff is back | ||
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07-01-2008
| #4 | ||
| cerca trova... Join Date: 01-01-2000 Location: East Anglia
Posts: 4885
Thanks: 16
Thanked 232 Times in 216 Posts
Blog Entries: 1 My System: Triple Dragon with HDD/USB stick, Humax HDCI2000, Echostar AD3000ip & SR8700, Fortecstar 5100CIUltra, Aston Simba, RSD ODM300. Swedish Microwave 1.2 Motorised dish / Invacom C120 twin LNB driven by the AD3000. 3 other fixed dishes. Diablo/Mrev Cams Fighting the evil 3 Dragons under the Don Quixote banner,Sir Llew persevered where others failed | ...and a nice trace of the shape of a pulse from the optical sensor of my actuator. Only shows one here, but you can watch the train of pulses for any interference if you need to and 'freeze' to inspect. Note the excellent squarewave, no nasty glitches!
__________________ Celebrating Ten Years Of The Forum As A Founder Member | ||
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07-01-2008
| #5 | ||
| Amo Amas Amant Admin Join Date: 18-11-2004 Location: NW England (Siberia)
Posts: 8121
Thanks: 18
Thanked 253 Times in 236 Posts
My System: IDD CI24 ECONO MM Penta 1.20 Galaxy II 1.2Mtr Polar MTG yes it has been on the arc for 21 years and is still driven by a modified wiper motor from a Ford Anglia. It's like me sometimes groans but always performs Saved us from the black plague of ignoratio elenchi, he awaits a special badge with jugs |
That is quite impressive indeed
__________________ War does not determine who is right, it determines who is left! Formerly toppervte33h whose six pack has turned into a keg Help support this web site by making a donation Or use other options to help support Sats UK Show Your Support by clicking the button Thank you. Freddie Flintoff is back | ||
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