Products > Test Equipment
Test Equipment Anonymous (TEA) group therapy thread
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Brumby:
I have also done microswitch surgery, but on a CD changer in one of those half-sized jukeboxes (that I literally, found on the side of the road.)

The result was quite successful, but not long-lived.  From your write-up, it is clear I was too gentle in my efforts.  However, having this information has given me the confidence to make a more determined effort that should yield a better lasting result ... if I could be arsed digging the thing out of the garage.
mnementh:

--- Quote from: Brumby on July 10, 2022, 02:29:27 am ---
--- Quote from: mnementh on July 10, 2022, 12:39:00 am ---.... and I have a plan.  >:D

--- End quote ---
I say that as well.   I only wish they would pan out a bit more often than they do.

--- End quote ---
Amen, brother.  :-+

mnem
"Life is what happens while you're busy making other plans." ~attributed to John Lennon
mnementh:

--- Quote from: tautech on July 09, 2022, 03:27:13 am ---
--- Quote from: mnementh on July 09, 2022, 02:41:42 am ---
--- Quote from: tautech on July 09, 2022, 12:15:49 am ---
--- Quote from: mnementh on July 08, 2022, 11:50:48 pm ---Actually, I was thinking to make a header so I could plug the HP pod and whip leads directly into the oz2cpu scope PCB. As I said, those will probably be more than long enough for anything I'd be doing, unless I change my mind and put the scope up higher on my bench, which is pretty unlikely ATM.

I was asking about MK's project since you linked to it at the beginning of the SDS2000X thread. :-// Not knowing what the difference is between the Siglent frontend and the HP braided cables, I'm leery of just plugging random lengths of either braided cable or micro-coax into the front of the scope without any compensation, or the wrong compensation. I saw the issues oz2cpu was having there in the beginning.

mnem
 :-/O

--- End quote ---
OK so if you already have the HP pod den go widdat !
Be aware you only need get something 1/2 clean into the LA input terminals as what's shown on the display in Digital mode bares little resemblance to the actual signal. IIRC there's discussion about this in the DIY thread.
IMO coax LA probe set compensation is likely to be pretty much an industry standard however the truth of the matter is suck it and see.
But the fact that we don't see cries that 'it don't work properly' for any of these DIY creations which points to them being fairly forgiving.

--- End quote ---

I don't have the [hp] pod yet... but they are available pretty reasonably, and sometimes you even get a few genny HP grabbits. It's trying to get a full set with the grabbits and the braided cable and not in train wreck condition that's difficult. Vince has no idea how lucky he got.  ;)   
--- End quote ---
What's pretty reasonably ?   TBH you should do the research to find the Pt#'s for the same or close LeCroy, Tek and Rigol LA PCie probes and try and pick one of them up reasonably. The grabbers are no big deal if you can get the rest of the probe complete.   https://www.aliexpress.com/item/1005001445436599.html
Just don't buy this garbage:   https://www.aliexpress.com/item/32981701765.html
--- End quote ---



I have a copy of TK's adapter PCB on the way; mostly because the BOM is: $15. Boom! Seeya! Done! :-DD

Also because the layout lends itself to my intended means of attacking the problem: solder a piece of socket header on the edge of the PCB and just plug the HP pod directly onto it.

I figured it was something I could just throw a little money at and hopefully it works as well as it did for him; otherwise, I either get the braided cable and try it that way, or I get oz2cpu's pcb made and build it with the same pod.

   https://www.ebay.com/itm/294846434318

I've shopped around and seen the HP pods going for ~$20-25 with a few grabbits; but since TK's PCB was so cheap, I splurged $35 on this HP pod which appears to be NOS and in unused condition, with all the whip leads and a full set of HP grabbits.

We'll see how it works out.  :-//

mnem
 :=\
bd139:

--- Quote from: shodan@micron on July 10, 2022, 03:44:25 am ---Today i try download new firmware for my equipment, but TEK website is unavailable now... :palm: :-BROKE



I guess I should offer to Danaher/Fortive corp. my "System Reliability Engineer" services for their website.  ;D

--- End quote ---

I’ve learned never to offer my IT skills to large corps. You can’t escape afterwards  :-DD
Specmaster:

--- Quote from: Brumby on July 10, 2022, 02:25:17 am ---
--- Quote from: xrunner on July 09, 2022, 10:11:34 pm ---200 kHz BW? Yea what a POS. Should be at least 300 kHz for that price.  :-DD


--- Quote from: BU508A on July 09, 2022, 10:04:45 pm ---While I was looking for some scopes on ebay, I stumbled over this abonimation:

https://www.ebay.com/itm/394152027065



 :wtf:  :scared:  :-//

--- End quote ---

--- End quote ---

I see:
* 200 Kmhz  in the listing title
* 200-kMHz  in a description heading
* 200 kHz  in the desciption text

The first, I'm not sure how to interpret.  The second would be 2GHz (impressive!) and the third is, at least, credible.

However, I already have a DSO138 and one of those $20 component testers ... but the case doesn't look half bad.

--- End quote ---
Agreed, the case looks reasonable enough for what it is. I always wondered how long it would be before someone managed to combine the functions of the Chinese component testers and a DSO138, both of which I have in my toolkit. This unit however goes one step further I think, it seems to also have signal generator build in as well which would make it a reasonable pocket tool, especially useful for tracing signals in a DUT (has to be less than 200Khz) and it is ideal also because it is fully floating so no risk of grounding anything.
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