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Antoniolli
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3 Messages

Sunday, September 17th, 2023 10:25 PM

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Power levels all over the place!

Hello,

I have been getting more and more frequent modem/router reboots due to what I believe have been the power levels.

Modem/router -- Netgear C7000v2 24x8, using Arris BDA power amplifier with Active Return

I purchased the amplifier because I believed the upstream power levels were too high at 50dB originally (4 channels locked, 4 channels unlocked; sometimes only 3 locked 5 unlocked)

The router reboots still happen a little less frequently than before, but nonetheless I have to believe this is now due to my downstream power levels being all over the place right?

The closer to 0dB the better was my impression, and either positive or negative the power levels are as far away from 0dB as they can be

Please correct me at any point, help me so I don't have to call the Xfinity people to my home :(

Let me know if any other info is needed. Thank you!

Downstream Bonded Channels
Channel Lock Status Modulation Channel ID Frequency Power SNR Correctables Uncorrectables
1 Locked QAM256 28 591000000 Hz 15.6 dBmV 39.8 dB 28183 17185
2 Locked QAM256 21 549000000 Hz 15.9 dBmV 40.3 dB 26169 29908
3 Locked QAM256 22 555000000 Hz 15.9 dBmV 40.4 dB 27417 26163
4 Locked QAM256 23 561000000 Hz 16 dBmV 39.6 dB 26812 26554
5 Locked QAM256 24 567000000 Hz 15.8 dBmV 40.5 dB 26783 25924
6 Locked QAM256 25 573000000 Hz 15.6 dBmV 40.2 dB 26592 25844
7 Locked QAM256 26 579000000 Hz 15.2 dBmV 39.9 dB 26040 25851
8 Locked QAM256 27 585000000 Hz 15.5 dBmV 39.9 dB 27666 20577
9 Locked QAM256 29 597000000 Hz 15.5 dBmV 39.7 dB 27736 18870
10 Locked QAM256 30 603000000 Hz 15.2 dBmV 39.5 dB 28172 19990
11 Locked QAM256 31 609000000 Hz 14.8 dBmV 39.4 dB 27479 21771
12 Locked QAM256 32 615000000 Hz 14.4 dBmV 39.3 dB 27664 22474
13 Locked QAM256 33 621000000 Hz 13.9 dBmV 39.2 dB 32162 44148
14 Locked QAM256 34 627000000 Hz 14.1 dBmV 39.4 dB 33408 46282
15 Locked QAM256 35 633000000 Hz 13.6 dBmV 39.3 dB 30153 31064
16 Locked QAM256 36 639000000 Hz 13.4 dBmV 38.5 dB 25583 23488
17 Locked QAM256 37 645000000 Hz -19.6 dBmV 37.8 dB 0 0
18 Locked QAM256 38 651000000 Hz -19.5 dBmV 37.8 dB 0 0
19 Locked QAM256 39 657000000 Hz -19.9 dBmV 37.5 dB 0 0
20 Locked QAM256 40 663000000 Hz -19.8 dBmV 37.2 dB 0 0
21 Locked QAM256 41 669000000 Hz -20.1 dBmV 36.8 dB 0 0
22 Locked QAM256 42 675000000 Hz -20.3 dBmV 36.2 dB 0 0
23 Locked QAM256 43 681000000 Hz -20.6 dBmV 36.2 dB 0 0
24 Locked QAM256 44 687000000 Hz -20.7 dBmV 35.9 dB 11 0
 
Upstream Bonded Channels
Channel Lock Status US Channel Type Channel ID Symbol Rate Frequency Power
1 Locked ATDMA 4 5120 Ksym/sec 35600000 Hz 38.5 dBmV
2 Locked ATDMA 2 5120 Ksym/sec 22800000 Hz 38.4 dBmV
3 Locked ATDMA 3 5120 Ksym/sec 29200000 Hz 38.1 dBmV
4 Locked ATDMA 1 5120 Ksym/sec 16400000 Hz 38.6 dBmV
5 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV
6 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV
7 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV
8 Not Locked Unknown 0 0 Ksym/sec 0 Hz 0.0 dBmV

Question

 • 

Updated 

2 years ago

 • Edited

169

2

0

XfinityVictor

Official Employee

 • 

1.4K Messages

2 years ago

@Antoniolli Hello, I am really sorry you are experiencing service issues. I understand how frustrating it is, and I am happy to help you troubleshoot your service. First I will ask a few questions to better understand the root of the problem. We value you as a loyal customer and would like to resolve this issue, so you can enjoy our great service.  To avoid repeating any steps you may have already taken, can you please describe what you have done to resolve your service issue?

4

0

Antoniolli

3 Messages

@XfinityVictor​ At the time of making the post, I had used a signal boost amplifier that caused the downstream power levels increase drastically. I have removed the amplifier, and the downstream power levels are back to around 0dB but the upstream power levels climb back up to about 50dB.

I should also note I live in an shared apartment building.

2 years ago

0

XfinityVictor

Official Employee

 • 

1.4K Messages

Is the equipment connected to a splitter?

I am an Official Xfinity Employee.
Official Employees are from multiple teams within Xfinity: CARE, Product, Leadership.
We ask that you post publicly so people with similar questions may benefit from the conversation.
Was your question answered? Please, mark a reply as the Accepted Answer.tick

2 years ago

0

Antoniolli

3 Messages

@XfinityVictor​ Currently no splitter or amp connected, cable runs directly from wall to modem/router.

2 years ago

0

XfinityRyanE

Official Employee

 • 

1.1K Messages

Gotcha, thanks for the clarification on that. We would like to run some remote tests on your signal and equipment, but will need to obtain some of your account information first. To get started, please use the chat icon in the upper right to enter Direct Messaging and send us a message with your full name and full address.


Here are the detailed steps to direct message us:

• Click "Sign In" if necessary

• Click the "direct messaging" icon (upper right corner of this page)

• Click the "New message" (pencil and paper) icon

• Type "Xfinity Support" in the to line and select "Xfinity Support" from the drop-down list

• Type your message in the text area near the bottom of the window

• Press Enter to send your message

Please let me know if you have any questions or run into any problems.


 

I am an Official Xfinity Employee.
Official Employees are from multiple teams within Xfinity: CARE, Product, Leadership.
We ask that you post publicly so people with similar questions may benefit from the conversation.
Was your question answered? Please, mark a reply as the Accepted Answer.tick

2 years ago

0

EG

Expert

 • 

111.1K Messages

2 years ago

@Antoniolli 

FWIW. You could try using a return path only drop amplifier such as one of these;

https://www.amazon.com/Antronix-RRA1-10-Coaxial-Return-Amplifier/dp/B00ZONO3MO

It won't amplify the forward path / downstream. But amps should be used only as a last resort (band-aid) fix as sometimes they can actually make things worse (garbage in equals even more garbage out). The goal is to reduce the amount of overall line attenuation in more conventional ways. It's usually best to get a tech out to investigate and determine what is needed to properly balance the line. Good luck !

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