04:03 <azonenberg> So i heard from Shahriar yesterday, sounded like he was actively filming the AKL-PT1 video while we talked

04:03 <azonenberg> had a bunch of questions about the different versions and such

04:05 <monochroma> :O

04:11 <azonenberg> and was talking about collecting data

04:12 <azonenberg> So hopefully we'll be seeing it go live in the not too distant future

04:12 <monochroma> yay

04:19 <Bird|otherbox> woohoo \o/

12:10 <_whitenotifier> [scopehal] sbabic44 commented on issue #15: Add Picoscope scope driver(s) - https://git.io/JtEeo

15:51 <_whitenotifier> [scopehal] azonenberg commented on issue #15: Add Picoscope scope driver(s) - https://git.io/JtEsf

21:44 <azonenberg> LeoBodnar: Heads up about a potential quality control issue on your SMA pulse generators

21:44 <azonenberg> I got one a week or two ago and gaged the SMA and the center female contact was sticking out 0.0015" past the reference plane

21:44 <azonenberg> I suspect it was overtightened during assembly

21:45 <LeoBodnar> ooh, cheers, I will keep an eye on this

21:45 <LeoBodnar> is it OK now?

21:45 <azonenberg> Or maybe there was too much solder on the contact

21:45 <LeoBodnar> i.e. can you deal with it?

21:46 <azonenberg> The connector i think is damaged beyond repair. I believe it's Amphenol SV Microwave SF2921-61356 or a very similar connector

21:46 <LeoBodnar> it should be a dry contact but I have found that some connectors don't make good contact

21:46 <azonenberg> I ordered a replacement

21:46 <LeoBodnar> yep it's SV

21:46 <azonenberg> (Which cost me $16.21 at digikey plus tax and shipping)

21:47 <LeoBodnar> I can refund you or send a replacement

21:47 <azonenberg> So i'm going to gage that connector new out of the box, then install it, very carefully and paying attention to contact position as i tighten it

21:47 <azonenberg> The cost isnt that big a deal but i wanted you to know in case this was a production issue affecting a whole batch

21:48 <azonenberg> Since having the contact stick out too far risks damaging the male contact of hardware it's mated to

21:49 <LeoBodnar> got you, thanks for the heads up

21:50 <azonenberg> I'm in the process of acquiring a 16 GHz scope and don't want to be messing up any of the rather pricey cables and fittings I'm using it with so I'm starting to gage all of my cables and connectors

21:50 <azonenberg> And this is one of the many that failed

21:50 <LeoBodnar> I suggest wicking all the solder from the pad then

21:51 <LeoBodnar> the worst that can happen then is intermittent contact

21:51 <azonenberg> Yeah I'll probably do that

21:51 <azonenberg> Maybe your manufacturing shop put too much solder on the

21:51 <azonenberg> pad

21:51 <LeoBodnar> I thought you wanted to remove the connector altogether for direct testing of your probes?

21:52 <LeoBodnar> I'll keep an eye on this

21:52 <azonenberg> No, I actually have a fixture now that mates with the SMA and has a signal and ground point

21:52 <azonenberg> with characterized electrical length etc

21:52 <azonenberg> i use the same thing for VNA testing

21:52 <LeoBodnar> ah

21:54 <azonenberg> https://www.antikernel.net/temp/sma-footprint.jpg

21:54 <azonenberg> is what it looked like with connector unscrewed

21:54 <azonenberg> I suspect the thickness of the solder was enough that when tightened it pushed the pin forward

21:58 <azonenberg> https://www.antikernel.net/temp/sma-footprint2.jpg

22:02 <azonenberg> i attempted to measure the thickness with my micrometer but the back side SMA got in the way

22:02 <azonenberg> And I don't think my caliper has the resolution to see this

22:05 <LeoBodnar> yeah, good catch, I'll try to not use solder altogether and just hope it makes enough contact

22:05 <LeoBodnar> and redesign the pad on the next version

22:05 <LeoBodnar> will probably need few prototypes

22:08 <azonenberg> If you don't have a SMA gage set you can send some prototypes to me and I can measure them for you to make sure the pins are in tolerance

22:14 <d1b2> <david.lenfesty> https://cdn.discordapp.com/attachments/776941750291267595/806286345722396692/PXL_20210202_221201141.jpg

22:15 <d1b2> <david.lenfesty> Shoulda bought the parts when I ordered the PCBs... the STM32s for the probe are out of stock now

22:15 <azonenberg> Oops

22:15 <d1b2> <david.lenfesty> F103 for the host are still available so I can still do everything with the host board

22:15 <azonenberg> yeah i always order components, boards, and stencils at the same time

22:16 <azonenberg> i assume you've tried other distributors already?

22:16 <d1b2> <david.lenfesty> Not yet I just checked digikey last night

22:17 <d1b2> <david.lenfesty> But the probe board is basically just the host with a few things stripped out anyways

22:17 <d1b2> <david.lenfesty> and mouser is backordered as well