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Forum Discussion

Tutor

Oct 08, 2015

Solved

CM500 status log for high db power on upstream

1 Locked ATDMA 53 5120 Ksym/sec 34800000 Hz 54 dBmV 2 Locked ATDMA 54 5120 Ksym/sec 27900000 Hz 54 dBmV 3 Locked ATDMA 55 5120 Ksym/sec 21000000 Hz 54 dBmV ...

vkdelta
Oct 13, 2015
Upstream power is still too hot (ideally should be dropped by 6 dB if possible). I think someone at the ISP side need to reduce one of the attenuators in the upstream direction.

are you facing any dropouts?

NETGEAR Employee Retired

Oct 09, 2015

Sure. Let me know.

Tutor

Oct 10, 2015

Ok mapped all coax from pole to the modem. Have (1) subscriber amplifier CSAPDU5VP AND (1) powered splitter to one of the bedrooms.

I eliminated both pieces of equipment so main feed goes straight to the modem ranted theres a (2) coax couplings and say 50ft RG6.

Rebooted modem and still getting same db levels.

Acquire Downstream Channel	747000000 Hz	Locked
Connectivity State	OK	Operational
Boot State	OK	Operational
Security	Enabled	BPI+
IP Provisioning Mode	Honor MDD	honorMdd(4)

Upstream Bonded Channels

Channel	Lock Status	US Channel Type	Channel ID	Symbol Rate	Frequency	Power
1	Locked	ATDMA	53	5120 Ksym/sec	34800000 Hz	54 dBmV
2	Locked	ATDMA	54	5120 Ksym/sec	27900000 Hz	54 dBmV
3	Locked	ATDMA	55	5120 Ksym/sec	21000000 Hz	54 dBmV

Lock Status	Modulation	Channel ID	Frequency	Power	SNR	Correctables	Uncorrectables
1	Locked	QAM256	16	747000000 Hz	3.3 dBmV	39.8 dB	0	0
2	Locked	QAM256	1	657000000 Hz	6.2 dBmV	40.6 dB	0	0
3	Locked	QAM256	2	663000000 Hz	4.5 dBmV	40.2 dB	0	0
4	Locked	QAM256	3	669000000 Hz	3.1 dBmV	40 dB	0	0
5	Locked	QAM256	4	675000000 Hz	2 dBmV	39.6 dB	0	0
6	Locked	QAM256	5	681000000 Hz	1.9 dBmV	39.9 dB	0	0
7	Locked	QAM256	6	687000000 Hz	2.4 dBmV	40 dB	0	0
8	Locked	QAM256	7	693000000 Hz	3.7 dBmV	40.2 dB	0	0
9	Locked	QAM256	8	699000000 Hz	5.6 dBmV	40.3 dB	0	0
10	Locked	QAM256	9	705000000 Hz	7.4 dBmV	40.6 dB	0	0
11	Locked	QAM256	10	711000000 Hz	7.5 dBmV	40.5 dB	0	0
12	Locked	QAM256	11	717000000 Hz	5.6 dBmV	40.2 dB	0	0
13	Locked	QAM256	12	723000000 Hz	3.7 dBmV	40 dB	0	0
14	Locked	QAM256	13	729000000 Hz	2.5 dBmV	39.8 dB	0	0
15	Locked	QAM256	14	735000000 Hz	2.3 dBmV	39.8 dB	0	0
16	Locked	QAM256	15	741000000 Hz	2.6 dBmV	39.7 dB

vkdelta
NETGEAR Employee Retired
Oct 13, 2015
Upstream power is still too hot (ideally should be dropped by 6 dB if possible). I think someone at the ISP side need to reduce one of the attenuators in the upstream direction.

are you facing any dropouts?