Search found 3 matches
- Thu May 17, 2018 6:14 pm
- Forum: DSO 112 & 112A (Coral)
- Topic: DSO112A displays -100mV DC with shorted input
- Replies: 3
- Views: 14715
Re: DSO112A displays -100mV DC with shorted input
Zooming in vertically to 20mV/div (and moving up the trace) reveals also a small periodic AC waveform added to the -100mV DC offset, which does not look like noise: 20180517_002128~01.jpg Consequently I tried to measure this signal at the AOUT test point (ADC input) with a faster 1GSps scope, and go...
- Mon May 14, 2018 6:42 pm
- Forum: DSO 112 & 112A (Coral)
- Topic: DSO112A displays -100mV DC with shorted input
- Replies: 3
- Views: 14715
Re: DSO112A displays -100mV DC with shorted input
Added some photos.
- Sun May 13, 2018 3:33 pm
- Forum: DSO 112 & 112A (Coral)
- Topic: DSO112A displays -100mV DC with shorted input
- Replies: 3
- Views: 14715
DSO112A displays -100mV DC with shorted input
Yesterday my DSO112A arrived and I'm quite surprised by the capabilities of this little gadget :) I noticed a strange behaviour, though, which I cannot explain. DSO is running on battery power (in order to rule out any influence from USB power supply) and rests on a table, test cable is not yet conn...