Search found 44 matches

by mwm
Wed Aug 17, 2016 9:19 pm
Forum: FG085
Topic: Problems with my FG085
Replies: 9
Views: 27786

Re: Problems with my FG085

Still looking for some help with this, and back to it soon. Any chance of getting a trouble-shooting guide, or a list of test points and voltages to expect, or any help at all?
by mwm
Tue Aug 16, 2016 9:45 pm
Forum: DSO 062
Topic: Counterfeit 062?
Replies: 4
Views: 18281

Re: Counterfeit 062?

Ok, I've attached images of the component side of both the LCD module and the main board.
by mwm
Tue Aug 16, 2016 3:41 am
Forum: DSO 062
Topic: Counterfeit 062?
Replies: 4
Views: 18281

Counterfeit 062?

On looking at my 062 kit, the LCD module does not have any signal labels on it, just pin 1 on one side. Could this be a counterfeit?
by mwm
Thu Aug 04, 2016 11:02 pm
Forum: DSO 112 & 112A (Coral)
Topic: DSO112A serial interface docs?
Replies: 31
Views: 80182

Re: DSO112A serial interface docs?

I think I've figured out the delay issue, but I'm not sure. Since the DSO is sending a frame, there should be a delay after each frame while it waits for the trigger for the next frame. But that delay is a bit longer than I'd expect. Possibly I just don't understand why it's as long as it is.
by mwm
Fri Jul 29, 2016 11:36 pm
Forum: DSO 112 & 112A (Coral)
Topic: DSO112A serial interface docs?
Replies: 31
Views: 80182

Re: DSO112A serial interface docs?

Ok, here's the update. I'm pretty sure there's at least one bug in the DSO112A serial interface code that generates frame ID 0xC0 data type 0x32 (the frame that holds blocks of samples of capture datas). The length in the frame appears to be short by one. The same code that deals correctly with ever...
by mwm
Fri Jul 29, 2016 6:35 pm
Forum: DSO 112 & 112A (Coral)
Topic: DSO112A serial interface docs?
Replies: 31
Views: 80182

Re: DSO112A serial interface docs?

Before sending a "Connect" frame to start capturing data, I always send a "Set parameters" frame that updates the values on the scope to whatever the user has set them to in sigrok. If the scope is set to 20ms originally, it works fine. Until I try to change the timebase to 50ms ...
by mwm
Fri Jul 29, 2016 5:53 pm
Forum: DSO138
Topic: How to tell your board is counterfeit or not?
Replies: 34
Views: 125027

Re: How to tell your board is counterfeit or not?

In that case, you might want to add ebay seller 'bruce-shark' to your list of people known to be selling counterfeits.
by mwm
Fri Jul 29, 2016 2:28 pm
Forum: DSO 112 & 112A (Coral)
Topic: DSO112A serial interface docs?
Replies: 31
Views: 80182

Re: DSO112A serial interface docs?

Seems that it doesn't send the ACK/confirmation packets when set to a timebase of 50ms/division or more - meaning it's sending a single value in each frame.

Is this a bug, or have I overlooked something?
by mwm
Fri Jul 29, 2016 7:42 am
Forum: DSO138
Topic: How to tell your board is counterfeit or not?
Replies: 34
Views: 125027

Re: How to tell your board is counterfeit or not?

I asked an ebay seller about one, and got back: Hello, Thank you for your email. The item is OEM products,not original . Usually ,they are the same as the original ,same function ,same quality . If you need it ,please feel free to buy from our store ,I will send out to you asap . Any further questio...
by mwm
Thu Jul 28, 2016 4:46 pm
Forum: DSO 112 & 112A (Coral)
Topic: DSO112A serial interface docs?
Replies: 31
Views: 80182

Re: DSO112A serial interface docs?

I thought I replied to this, but don't see it. Apologies if this is a duplicate. I've updated the software to take advantage of these changes. It seems much more reliable. I accidentally read the FG085 docs; problems with working on to many things at once. I could swear my DSO112A was shutting off w...