My SDS200 goes from the LAN port with a garbage spare hunk of Cat5 to a 4 port unmanaged switch to a Vonets WiFi bridge, wireless ping results below...
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ProScan: Official Software Thread
Rotorhead124
Member
Missed attachement?
Rotorhead124
Member
Things are even worse after I switched the NICs around. It has to be the SDS200 that is lazy.
Is that a different PC/Laptop or are you swapping out NIC hardware in the same PC? if so it could still be an issue with the PC itself... what happens from the PC if you throw a continuous ping to cloudflare.com or google.com?
Rotorhead124
Member
ok and it might be a pain in rear but see what that same ping to google does if you reconfigure the PC to use the ethernet NIC back into your regular switch, disable your wifi just to be sure there's no conflict. If you still get zero loss then it's looking like the SDS might have something going on (I'm no expert in SDS200 though).
Rotorhead124
Member
Back on the LAN to the 16 port switch on the Cat-8 Cable. Something about this LAN is confusing the SDS
Rotorhead124
Member
The pings to google are solid with either NIC (via two switches) or the Wifi. I checked each one separately.
Fixed it
Well, a directly connected cable still showed issues, albeit far fewer, but this is clearly far worse. The fact you were able to ping with zero drops from all your network interfaces pretty much eliminates the PC, and possibly the switch and router as well. Beyond running and digging into packet captures I'm about out of suggestions for this one.
Rotorhead124
Member
Rotorhead124
Member
Hold the presses! I think I have solved it. It is looking like an EMI problem. Standby.
Rotorhead124
Member
All my cabling is running in a fairly congested buch behind a desk. That is where the Cat-6e was. I pulled it out of there, ran it in front of the desk, and got this result. I can hardly believe this is the problem. The Cat-6e and Cat-8 are supposed to be exquisitely shielded. The two lost packets were the first and the last.
Nice. I once heard someone say they had a cable 'rolled' up in a small roll and they were having issues. Unrolled the cable and the issue went away. Now, that was unshielded 5e but wondering if it couldn't be something similar. Odd that it's shielded and still was an issue though.
Rotorhead124
Member
Nope. It has been banging through at 0% loss. You guys have been a great help in banging ideas off. I never thought this would be an EMI problem. I don't need both NICs on the PC, so I will leave one hooked to the SDS. I used to work in a Helicopter Technical Evaluation Squadron. We spent six months fighting an EMI spike that turned out to be a DC crystal heater in a VHF R/T. At least this just took an afternoon, although having found the victim, I have no idea what the source was. Cheers. Time for a beer. 🍺
Rotorhead124
Member
As a closing thought, after plugging and unplugging all day. The only way UNIDEN could have found a worse place for the LAN port was if they put it in the middle of the display. It ought to be on the backplane where all good receptacles should be rather than hanging out the front. Doesn't anyone do Human Factors in Engineering anymore? 😝
Nice find for sure! I dealt with what turned out to be a long CAT-5e run in parallel to a line voltage feeder for about 20' of it's run and it caused havoc! had the data guys run a new CAT-6 well away from the feeder and that cured it. Even with shielding if something is drawing enough current it can cause trouble if the shield isn't draining off the induced EMI.
When installed in a rack or in a mobile in a console, etc, the rear is not easily accessible. Or in some cases not at all without removing the mounting faceplate. Thus it’s in the front.
- Joined
- Sep 25, 2019
- Messages
- 38
is ProScan in the US
If you're asking if the author of the software, Bob Aune, is based in the USA...yes, SoCal area.
