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Do you still work in cable?

God I need this guy to come to my house and find the root cause of my internet troubles that I’ve been having ever since I switched from DOCSIS 3.0 to 3.1. I’ve had multiple tech visits and at one point they said my modem was bad so I contacted Arris and gotten a replacement. I get packet loss randomly, and sometimes the OFDMA channel for upstream suddenly becomes not locked and the power levels for upstream jumps randomly most of the time the power levels stay at 1. SC-QAM - 25.0dBmv 2. SC-QAM- 26.5dBmv 3. OFDMA - 22.8dBmv There’s 0 splitters on the side of the house or inside the house. Is the power levels too low? and if so why would that be. On the downstream side everything looks good good SNR (42) and good power levels too

Nah you tweakin

amazing cant wait for more videos!

Please go over meter troubleshooting

I love this video Sr

I was asked to apply to maint but I have no idea what I’m getting into

Do they even make a coring tool for 625 that will take the jacket off? All we have are the standard ones like the one you used. I know on QR715 & 860 they have that piece that comes off and you can skin the very top so the backup nut can go on but it would be very nice if on P3 cable you could just core without stripping the jacket first. Some techs cay you can core P3 like QR but I never tried it.

Love that probe🤩

Great video sir! Keep up the good work!

The click style fibre cleaner turns when you push it in. Zoom in on it with your camera on your phone and pull down on the black part and you will see it rotate as you apply pressure. These will not clean if someone has done a wet clean on a dirty fibre and the plugged it in immediately before the solution dries. The dirt can be suspended in the liquid and the pressure of the connector mating to another surface, typically a connector on the other side of a bulkhead, will squeeze the liquid out off the mating surface and form a ring of dirt. Once it dries, the click pen won't have enough force to remove it. You'll need a Cletop with the blue cloth and an electro wash pen or an alcohol spritzer. Apply liquid to the top part of the blue cleaning tape, rotate the fibre and then pull down into the dry area. Repeat this to dampen the dried dirt and then wipe it off and dry it as you pull down. The white Cletop cloth leaves too much lint.

Great video. It’s good to see you back, as your videos have been helpful learning the trade throughout the years.

Must be nice to submit maintenance tickets for <5dbs.... Our tap scans aren't considered failing unless it's in the negative.

At last, I understand! THANKS

Us cable techs/maint. people don't get enough credit for the knowledge we obtain. The average person has no idea.

I use this Onyx as well. The battery life is terrible tho. Quick tip in case you don't already know this. If you turn the theme to "Dark Mode" it drastically improves the battery life. Also looks better imo.

Would you be able to do a video on using ingress scans on cable for noise ?.

The diplex filter in the equipment helps isolate these issues, just as it does chasing upstream noise. The input to the line extender is a 20db test point (imagine it as a 20db tap) and the only echo it will see downstream of it is from the circuitry on the amp itself up to the diplex filter. The most common things that cause echo are corroded connectors, inputs, outputs and splices gone bad. You have to imagine like your yelling down a hallway and you hear your voice echo back. If someone was at other end they would hear you yelling and maybe a bit of the echo moments later from it bouncing back to source and back to you. To continue this laboured analogy. Someone was yelling and there was 3 hallways with screen doors and closing 5he door to one hallway (istop) lowered the echo you could determine what hallway was the main source of the ecjo coming back

Cut cable and youre gonna look for ICFR...lmao

Do you happen to have any information about know how to balance a technetix amp ?

Does anybody know what happened to this guy who doesn't upload any more videos? He's pretty good at this and explains so well. I would like to hear that he's ok and coming back to create these videos that help a lot to newer techs. Good luck and hope to see you soon 👍

I live in NYC , I work in the cable industry. Ingress is a major problem here in Brooklyn, Bronx, Queens and Manhattan 🦺🥾🥽

Some of the work done here is not up to modern code. Please be careful if you do this at home.

Kinda pointless when you already know you have an open sheath under a paved driveway and five years later it's still not replaced.

Cable is a garbage system

That is not true. A backwards tap will not have signal at the spigots but down the line still will have signal. I just retired after 41 years. I always gave those Arris taps a retorque on the seizure screws. Go back in a day and I bet yours are barely holding. Especially in colder climates.

The OFDM carrier uses LDPC for errors and the QAMs use Reed-Solomon error correction. You can't expect the Pre BER to work the same. Post BER is the same though.

My color is terrible but what is the greenish looking line under the carriers when you extended the dwell time?

Looks like overdrive to me, when the incoming DS signals are too powerfull on the amplifier first stage. Every amplifier manufacturer have a range how strong signal can hit the first stage, depending on channels numbers, type (analog, dvbc, docsis, specified by the manufacturer). If ur first stage gets overdriven cuz the signal is too strong, its makes a full spectrum noise. U can even see the first stage diplexer cutting range at the end of the reverse spectrum. If the day (and the cables) are warmer, the attenuation is bigger, so it can cause to dissapear cuz the signal strength on the input side is lower. If the time is colder, the cables are become colder too so the signal strenghts become stronger cuz more cold cable have lower attenuation (on absolute 0, every conductor is a superconductor) which can cause overdrive if the signal strenght reaches the max imput power with "x" DS channels Edit: sry for "necro" comment, but i "fight" these on Eurodocsis HFC everyday.

Had a job where a tech reported an icfr of 9db on a 6mhz docsis carrier. Nonetheless, I was excited to see what the carriers looked like with that much distortion. Turned out to be water in a trunk line fitting upstream from the amp I tested.

Metal thieves

HPNA was a DSL like technology from the 1990s. We used it and bridged it on to phone lines in the basement of condos and apartments. Distance limited to 2000ft. It has since morphed a few times becoming something that it only used in a house. DSL made more sense for a cluster of condos sharing a common phone room. We would also use SDSL extenders to reach hubs in closets and bridge the service onto the phone line. No DSL filter needed.

Just found your channel. I see its been awhile since you have posted videos or comments. After 30 minutes of watching and rewatching, with my meter alongside, I have learned more than i did in class. Thank you for what you have posted and I hope you get back into it! If not, it would be great to ask some questions directly! Please reach out if that is an option!

How do you fix or find it?

A great video. Thank you. I'm about to begin my career in telecommunications

great video check my channel out for daily fiber optic splicing in the field Fiber Splice God

Almost accidentally connected the coax to the TV out instead of cable in on a cable box, wonder what that would have done

Is the rigged meta box a node or amplifier ?

No mocha filter? I remember when uvers would kill a lot of nodes.

Not locking😂 no upstream lol

Good shit. That’s real. If you touch anything, it goes away and you think its cool. Two days later, the same shiiiit.

Easy fix. You got lucky

There’s 2 cable providers in our area. Wait till you see what happens if someone accidentally loops both together. Yup both systems go down off the leg!

hi you should post more of these, extremely informative!

6:20 I believe if you hook it up backwards the signal level will just be low at that location . Taps after will work ok as thru loss not as affected.Thanks for the video

Hello sir Ji can you please help me

Nice video like

What happend to you keep making videos

Can you make some more video love the channel

I was doing an uplift in an area. Node was set up as a 4x4. 1 of the 4 nodes had elevated noise floor and we had not even set foot into that part of the plant. I went to help a maintenance tech try to track it down since I was going to be working there the following week and wanted to know the cause so I could address it while replacing equipment. Was just a lose connector on a 2 way splitter feeding strip taps. 1 1/4 turn fixed it all. Avrg USSNR was low 20s and went to mid-high 30s. I later cut a new node in and 2/4 nodes had elevated noise. That time was just a faulty card at the headend feeding an EDR transmitter at the node. As someone whose job isn't fixing these problems but upgrading the plant and seeing it occur out of the blue it's always nerve racking as if it was something my crew did and often the resolution was the silliest thing. Really shows how sensitive the plant can be and yet it is still quite resilient in its own ways.