Search found 7 matches

by RayPooley
Sat Feb 01, 2020 12:32 pm
Forum: DSO Shell
Topic: Measuring AC waveforms
Replies: 1
Views: 14597

Re: Measuring AC waveforms

I know. It's been a long time since you posted this. I just joined as a new DSO150 user. As to your question. I did a few things with my unit after assembly and one of the was to test the AC waveform output from a 240V / 9V step down transformer. All I did was set the DSO to AC and connect the probe...
by RayPooley
Sat Feb 01, 2020 12:16 pm
Forum: DSO Shell
Topic: Li-ion power mod
Replies: 144
Views: 185823

Re: Li-ion power mod

Wow. That's a heck of a lot of effort you folks. I would simply ask why when this works perfecty well.
by RayPooley
Sat Feb 01, 2020 11:29 am
Forum: DSO Shell
Topic: Startup test troubleshooting
Replies: 6
Views: 10601

Re: Startup test troubleshooting

Just scanned through this tale of woe. You have some problems there. Some sound a lot like short circuit issues perhaps from inaccurate soldering. The holes are very close together in some parts ike the switches. When I assembled mine I found that a PC based USB microscope was invaluable in checking...
by RayPooley
Sat Feb 01, 2020 11:14 am
Forum: DSO Shell
Topic: Screen doesn't show anything, probably faulty product
Replies: 5
Views: 8915

Re: Screen doesn't show anything, probably faulty product

JYETech didn't care about this. Great customer service. To be fair you can't really expect them to do much when you have had the product for 6 months and done nothing with it in that time. They have no idea where you have kept it in the meantime or how it has been handled. You say you are a novice....
by RayPooley
Fri Jan 31, 2020 5:49 pm
Forum: DSO Shell
Topic: Step 5 Calibration Instruction on Leaflet
Replies: 2
Views: 4664

Re: Step 5 Calibration Instruction on Leaflet

By the way. I didn't set the "Notify me when a reply is posted" when I posted the first two postings. So if you have a solution to offer would you mind sending me a private message?

Cheers
by RayPooley
Fri Jan 31, 2020 5:46 pm
Forum: DSO Shell
Topic: Step 5 Calibration Instruction on Leaflet
Replies: 2
Views: 4664

Re: Step 5 Calibration Instruction on Leaflet

Me again Since posting this I have figured out what C3 and C5 are all about. So I have completed the calibration process. However, I was unable to square the test waves at either 0.1V or 3.3V. I could see the waveform change as I adjusted C3 and C5 but it only went so far in reducing the curvature a...
by RayPooley
Fri Jan 31, 2020 3:12 pm
Forum: DSO Shell
Topic: Step 5 Calibration Instruction on Leaflet
Replies: 2
Views: 4664

Step 5 Calibration Instruction on Leaflet

Hi everybody New DSO150 owner here. Step 5 Calibration Instruction on Leaflet I have read this procedure a few times and I have also tried to follow it on my DSO150 but it makes no sense. 1 and 2 are fine. But 3, 4 and 5? What am I supposed to do here? It tells me to do something but doesn't explain...