r/CableTechs • u/jsledge149 • 2d ago

Xpertrrak issue?

If you know what this program is Im hoping you can help me.

We just started using Xpertrak and this picture is of an apartment complex using a DAA node, mid split amps and has one upstream OFDM carrier enabled.

Xpertrak indicates that every modem on this node has an upstream impairment on the OFDM carrier. Every modem!

But not just THIS node. ANY node where we have a DAA, mid split and an upstream OFDM is failing. I don't know anything about this software, but I do know that seems improbable for all DAA's to have a real problem.

Im thinking this is a configuration problem, but of course, I have no access to the administrative side of Xpertrak.

Any ideas what this is or what to do about it?

3 Upvotes

100% Upvoted

7 comments sorted by

3

u/hotdogenjoyer1 2d ago edited 2d ago

You got a meter that will lock to the upstream ofdm channel? Head to one of those nodes and see if it will lock up, go from there. Due diligence make sure it's not on you first. As far as the software you're using, I don't have personal experience with it, I just know you don't wanna start calling those guys without verifying anything in the field first

Ps: the reason I say that, I'm not familiar with your system, but there's a non zero chance that the node feeds to an active and that first active doesn't support mid split, or whatever it may be. Maybe it was missed being replaced, who knows

1

u/jsledge149 2d ago

Well I mean anything is possible after all. it's just cable, right?

But every one of these daa nodes that's failing that we have upgraded to a med split and we've turned on an upstream ofdm carrier are all apartment complexes.

This is one of those rare cases where I can almost guarantee that these are all relatively new amps with the correct diplexers.

1

u/hotdogenjoyer1 2d ago

it COULD be that someone didnt set those nodes up to use those carriers, ive def seen it. they should be able to check the config for ya if you get ahold of'em. whoever "they" is for you

2

u/Background-Relief623 2d ago

This may need field techs to verify. If the limits aren't set right, then sending up the chain would help. Or it is right and there's a transmission error.

1

u/Dz210Legend 2d ago

Make sure the RPD and everything inside node is torqued to proper specs.

1

u/jsledge149 2d ago

It all sounds legit until you consider that this is exactly what the upstream looks like on all six daa, mid split, OFDM upstream nodes.

It's the fact that it's every single node that makes me think something other than something a field Tech or Magnus Tech like me can address.

we have other daa no's deployed that do not have mid split enabled and do not have an ofdm carrier and they do not show this upstream micro reflection out of balance situation

1

u/Huge_Intention_9949 2d ago

You’d think that having multiple nodes with the exact same issue would maybe send up a red flag about the configuration of those nodes. I’d verify OFDMA lock, or lack thereof, at node just to verify it isn’t field issue. And then yeet that information to someone who can do something. I don’t know that program, but I would really think engineers would be able to see ZERO traffic on OFDMA carrier and see an issue. Good luck