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.
A-holes digging and cutting feeder with dull cutters never blow the fuse. We cut with proper tools, core feeder with no spark it blows the fuse, power inserter and power supply and if it is cold and rainy enough the node too.
Nice quick lesson. We just got our new Viavi meters a month ago. They seem to give a lot detailed info that we need to improve and keep out system right.
JR Schultz as a maintenance tech the Echo feature is helping us find corroded cable and connectors long before service impacting issues arise. Awesome tool to have. Much better than the DSAM meters we had.
@@thebasiccablechannel7464 I miss DSAM for one reason: Speed. ONX is an improvement in almost everything with the drawback of it being slow as ****. Mine has also got stuck sometimes and iv'e had to reboot.. Had some weird bugs that's for sure.
Would have went for the TDR first because that would tell all. I'm sure people would rather have you TDR, Short the output, terminate the output, swap the amplifier so they can see how each thing is done. I appreciate the effort and the fact you don't have endless time. To those out there, throw away the DSAM and the Trilithic DSP. Using them is a waste of time when you see the Viavi find stuff like a hound dog. Look at 0:34 and check out the black line which is noise under the SC QAMs. You'd have to go to two different screens to see this with other meters.
I thought that the ICFR and ECHO that you are seeing on your meter would be a representation of what is upstream from you. Here this is what is reflecting back.
I knew that everything past that amplifier was offline by using online tools. I went to it and saw the ICFR and figured it would be a good video opportunity.
I have seen this before most of the time we use a TDR on lines like that so we don't play the guessing game but good job funny how I have that meter and don't use it much still using the DSAM.
Bro in the future short the output of your amp and see if you icfr goes up , there was no need to change the amp, when you short the output any reflection will not make its way back upstream.
ahh copper thief lol. i have lots of old direct buried cable causing bad ifcr in the us, and a few ds channels. getting the cable replaced is another story. i usually have to wait until it completely fails to get the old 412/500 replaced with some 625
does anyone know how to remote into it so you can leave in a hub and look at spectrum on android phone, i hear people saying it can be done but never seen anyone actually do it, talk is cheap
@@thebasiccablechannel7464 Download the Viavi ONX app on your phone. Then over bluetooth you can see the front panel face of the ONX One Expert. So you are limited to the Bluetooth distance which is not that far.
Set up a mobile wifi hotspot with your android phone. Connect to the hotspot with your Viavi. Check the ip address on the viavi. Then use a VNC app on your phone to log in to the Viavi. Works within wifi range.
I saw it ahead of time. I wanted to see how it affected the downstream from testing upstream (as if it wasn't obvious in plain view as this was). Stay with me here as this is for educational purposes and getting techs used to what different fail points actually relate to in real life.
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.
Just terminate the amps output with a 75ohm resistor to rule out any downstream problems. Saves you a whole lot of trouble.
A-holes digging and cutting feeder with dull cutters never blow the fuse. We cut with proper tools, core feeder with no spark it blows the fuse, power inserter and power supply and if it is cold and rainy enough the node too.
Fun times :(
Nice quick lesson. We just got our new Viavi meters a month ago. They seem to give a lot detailed info that we need to improve and keep out system right.
JR Schultz as a maintenance tech the Echo feature is helping us find corroded cable and connectors long before service impacting issues arise. Awesome tool to have. Much better than the DSAM meters we had.
@@thebasiccablechannel7464 I miss DSAM for one reason: Speed. ONX is an improvement in almost everything with the drawback of it being slow as ****. Mine has also got stuck sometimes and iv'e had to reboot.. Had some weird bugs that's for sure.
Good video. I'm going through the comments and there are a lot of hatters out there. Good job on informing on the many problems we see out there.
I wish you would have shown how you spliced that line
If swapping an amp usually don’t need to splice u less a different housing
@@6mrsatan I think he's talking about the hardline at the end of the video
Would have went for the TDR first because that would tell all. I'm sure people would rather have you TDR, Short the output, terminate the output, swap the amplifier so they can see how each thing is done. I appreciate the effort and the fact you don't have endless time. To those out there, throw away the DSAM and the Trilithic DSP. Using them is a waste of time when you see the Viavi find stuff like a hound dog. Look at 0:34 and check out the black line which is noise under the SC QAMs. You'd have to go to two different screens to see this with other meters.
Awesome vids! Keep up the good work!
I thought that the ICFR and ECHO that you are seeing on your meter would be a representation of what is upstream from you. Here this is what is reflecting back.
I'm surprised you didn't pick up a leak before you went up to the amp.
JR Schultz yeah my CLI didn't go off which was weird as I drove right past it.
Maybe just look in Unified or rio and see whom has no signal you would not have wasted so much time. Next tap down would have no signal..duh!
Geraldine Szymanski so dumb that we're getting rid of Unified.
I knew that everything past that amplifier was offline by using online tools. I went to it and saw the ICFR and figured it would be a good video opportunity.
Bet you it was scrappers trying to find copper
I say more likely a tweaker
I have seen this before most of the time we use a TDR on lines like that so we don't play the guessing game but good job funny how I have that meter and don't use it much still using the DSAM.
my friend, my company uses the XM2 meters. Is there any videos from you using that meter?
Pissed somebody off, someone knew what they were cutting
This is some good finds!!!
Somebody went copper thieving and ended up knocking out cable to the entire area, joke's on them the electrical wires are usually aluminum too.
No. Theyre not.
Bad ICFR can cause what kind of issues??
So I'd there diffent icfr for return path vs downstream channels ?
Bro in the future short the output of your amp and see if you icfr goes up , there was no need to change the amp, when you short the output any reflection will not make its way back upstream.
THANKS YOU
Easy fix. You got lucky
ahh copper thief lol. i have lots of old direct buried cable causing bad ifcr in the us, and a few ds channels. getting the cable replaced is another story. i usually have to wait until it completely fails to get the old 412/500 replaced with some 625
Good job you also have bad echo so you know what that memes
Cut cable and youre gonna look for ICFR...lmao
Not locking😂 no upstream lol
Metal thieves
ILOVE cable TV job
does anyone know how to remote into it so you can leave in a hub and look at spectrum on android phone, i hear people saying it can be done but never seen anyone actually do it, talk is cheap
I am sure there is but I have not done it myself or seen it
@@thebasiccablechannel7464 Download the Viavi ONX app on your phone. Then over bluetooth you can see the front panel face of the ONX One Expert. So you are limited to the Bluetooth distance which is not that far.
Set up a mobile wifi hotspot with your android phone. Connect to the hotspot with your Viavi. Check the ip address on the viavi. Then use a VNC app on your phone to log in to the Viavi. Works within wifi range.
Waste of time swapping that amp IMO
Are you serious? You wasted two hours of fuckery instead of just some old fashioned school? If I had seen that I wouldn't have even cracked the velcro
I saw it ahead of time. I wanted to see how it affected the downstream from testing upstream (as if it wasn't obvious in plain view as this was).
Stay with me here as this is for educational purposes and getting techs used to what different fail points actually relate to in real life.
@@thebasiccablechannel7464 How much overtime did you claim?
Not nearly enough!!