Dynamic range window violation
I keep getting this on my brand new (2 weeks old) sb8200 modem:
Dynamic Range Window violation
RNG-RSP CCAP Commanded Power Exceeds Value Corresponding to the Top of the DRW
I have had 6 ...
Forum Discussion
Thank you for the reply and info. The upstream channel power levels were 38 before, I called Arris and they recommended 47-51 so the tech added attenuators to reach. It didn't matter, I got the DRW still.
I just assumed that the drw was causing the uncorrectables because everytime I checked my modem (hourly), I would see a new DRW error and more uncorrectables stacked up also.
A new issue has developed now. My modem login (192.168.100.1) keeps locking me out, site says location can't be reached. It happens daily. The only way I know how to bring it back is to power cycle my modem BUT this clears my logs and I can't see if I am getting DRW errors now. What the hell????
IMHO Arris is wrong about those levels. I know they designed the modem but I have to wonder who wrote that specification page. I think they messed up. The CMTS/CCAP will request whatever levels it needs from your modem to get a good signal. Nothing wrong with 38 dBmV upstream power. Can you remove the attenuator? If so I would do that and see if the problem gets better.
