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I was given this little thing a while back, haven't done anything with it yet...

There's this board, no particular identifying marks on just what it is. The oddest BNC I've ever seen on top, some switches down the left side that seem to be for selecting sensitivity and coupling, some DC input connectors on the top to power the thing, five buttons labeled OK, +, -, SEL, and RESET. A couple of pin headers and a USB micro connector on the bottom. A plug-in board labeled "2.4" TFT LCD.

Two bits of paper came with it. One is labeled Oscilloscope DIY Kit User Manual but it seems to be assembly instructions. This bears the numbers 138803K and 13804K, no indication as to which unit I have here. The other paper has "How to Use" calling out the "Display and Controls". And some stuff about "probe calibration". On the back of that one are schematics that are barely readable. With a magnifying glass I see them showing power input as "9.39V". (!) Apparently some of this thing runs at 3.3V also.

There's no case, though I'm told that one is available. Not told where, though.

Have any of you guys run across anything like this? I'm a little dubious as to how useful this thing might turn out to be, haven't yet gotten around to digging out an appropriate wall wart to power it up...


--
Member of the toughest, meanest, deadliest, most unrelenting -- and
ablest -- form of life in this section of space, ?a critter that can
be killed but can't be tamed. ?--Robert A. Heinlein, "The Puppet Masters"
-
Information is more dangerous than cannon to a society ruled by lies. --James
M Dakin

Photo?

Ken W7EKB

On 30 Dec 2024 at 11:39, Roy J. Tellason, Sr. via groups.io wrote:

I was given this little thing a while back, haven't done anything
with it yet...

There's this board, no particular identifying marks on just what it
is. The oddest BNC I've ever seen on top, some switches down the
left side that seem to be for selecting sensitivity and coupling,
some DC input connectors on the top to power the thing, five buttons
labeled OK, +, -, SEL, and RESET. A couple of pin headers and a USB
micro connector on the bottom. A plug-in board labeled "2.4" TFT LCD.

Two bits of paper came with it. One is labeled Oscilloscope DIY Kit
User Manual but it seems to be assembly instructions. This bears the
numbers 138803K and 13804K, no indication as to which unit I have
here. The other paper has "How to Use" calling out the "Display and
Controls". And some stuff about "probe calibration". On the back of
that one are schematics that are barely readable. With a magnifying
glass I see them showing power input as "9.39V". (!) Apparently some
of this thing runs at 3.3V also.

There's no case, though I'm told that one is available. Not told
where, though.

Have any of you guys run across anything like this? I'm a little
dubious as to how useful this thing might turn out to be, haven't yet
gotten around to digging out an appropriate wall wart to power it
up...


--
Member of the toughest, meanest, deadliest, most unrelenting -- and
ablest -- form of life in this section of space, ?a critter that can
be killed but can't be tamed. ?--Robert A. Heinlein, "The Puppet
Masters" - Information is more dangerous than cannon to a society
ruled by lies. --James M Dakin

--
This email has been checked for viruses by Avast antivirus software.
www.avast.com

On Monday 30 December 2024 01:36:25 pm John Kohlbach via groups.io wrote:

Hi Roy, could this be the beastie?

Cheers, John VK4ATU

Without even looking at the link, I'd say probably. A bit of poking around tells me that this thing is commonly referred to as a DSO-138. The two numbers I ran across are apparently two versions of the kit, one with just the main chip soldered, the other one with all of the surface mount parts soldered The unit I have is completely assembled.

Apparently it's good to about 200KHz bandwidth, so I guess it's okay for audio work and some arduino stuff. But that's okay, I have a nice Tek scope on my bench for when it's needed (and I don't remember the last time I turned it on).

There appear to be a lot of people selling these. And one company has a newer version out that's supposed to be better. Finding a case has been another thing entirely, it looks like I'll be getting one from china by way of ebay for not very much money.

So it looks like I have a new toy here. Dunno when I'll do much of anything with it, though. I haven't yet fired it up. I guess we'll see...

--
Member of the toughest, meanest, deadliest, most unrelenting -- and
ablest -- form of life in this section of space, ?a critter that can
be killed but can't be tamed. ?--Robert A. Heinlein, "The Puppet Masters"
-
Information is more dangerous than cannon to a society ruled by lies. --James
M Dakin

On Monday 30 December 2024 01:23:05 pm wn4isx via groups.io wrote:

Sight unseen, could the BNC be a reverse BNC?
One where the nominal female has a male stinger?
I've ran into them in the oddest places. The FCC requires reverse BNCs, TNCs, and SMAs on WiFi transceiver and some part 15 900MHz equipment.
They are also used on equipment where a manufacturer wants to lock you into using their connectors.

Nope.

--
Member of the toughest, meanest, deadliest, most unrelenting -- and
ablest -- form of life in this section of space, ?a critter that can
be killed but can't be tamed. ?--Robert A. Heinlein, "The Puppet Masters"
-
Information is more dangerous than cannon to a society ruled by lies. --James
M Dakin

On 30 Dec 2024 at 10:36, John Kohlbach via groups.io wrote:

Hi Roy, could this be the beastie?
? Cheers, John
VK4ATU

Hmmmm... I am intrigued. Their stuff is of reasonable cost, and appears to work adequately.

I am sorely tempted....

Thank you for the info, John.

Ken W7EKB
www.w7ekb.com

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On Monday 30 December 2024 02:53:49 pm wn4isx via groups.io wrote:

The document at
Shows the weirdest BNC female I've ever seen!

That's what I was talking about. That document is the two peices of paper that came with the unit...

I've save a copy of that, as I can read some of it a bit better than the actual print-on-paper and blow it up further if I need to.

--
Member of the toughest, meanest, deadliest, most unrelenting -- and
ablest -- form of life in this section of space, ?a critter that can
be killed but can't be tamed. ?--Robert A. Heinlein, "The Puppet Masters"
-
Information is more dangerous than cannon to a society ruled by lies. --James
M Dakin