Visitor
•
4 Messages
High error count on one channel
I am using a Netgear C7000v2 cable modem/router, with firmware 1.03.08. On just one channel (of 24) I see high error counts:
Channel...Frequency................Power...SNR......Correctables....Uncorrectagles
5. 567000000 Hz. -1.8 dBmV 33.2dB 84949843 7130834
Other channels have low correctables and zero uncorrectables. SNR for channel 5 is about 6 dB lower than the other channels.
The errors seem to happen in a burst. It will go for hours with no significant change.
There is a splitter near the entrance, then about a 50 foot run outside the house to the Netgear. The connectors appear to be good.
Any ideas about what may be causing this?
Thanks.
EG
Expert
•
111.5K Messages
2 years ago
The SNR is too low / out of spec. Please copy the entire signal status table including the upstream power level values and paste them into your next post here.
0
0
Eric-3
Visitor
•
4 Messages
2 years ago
Here are the connection stats after about 5 hours of uptime on the C7000:
Cable Connection
Frequency start Value
This field below allows you to modify the frequency the cable modem start with its scan during initialization and registration. Enter the new start frequency and restart the cable modem for it to take effect.
Starting Frequency
0
Startup Procedure
Procedure
Status
Comment
Acquire Downstream Channel
519000000 Hz
Locked
Connectivity State
OK
Operational
Boot State
OK
Operational
Security
Enabled
BPI+
IP Provisioning Mode
Honor MDD
honorMdd(4)
Downstream Bonded Channels
Channel
Lock Status
Modulation
Channel ID
Frequency
Power
SNR
Correctables
Uncorrectables
1
Locked
QAM256
17
519000000 Hz
-2.1 dBmV
39.6 dB
0
0
2
Locked
QAM256
21
549000000 Hz
-2 dBmV
39.9 dB
1
0
3
Locked
QAM256
22
555000000 Hz
-2.2 dBmV
39.9 dB
0
0
4
Locked
QAM256
23
561000000 Hz
-2.2 dBmV
39.5 dB
1
0
5
Locked
QAM256
24
567000000 Hz
-2.2 dBmV
38.7 dB
0
0
6
Locked
QAM256
1
417000000 Hz
-2 dBmV
40.1 dB
0
0
7
Locked
QAM256
2
423000000 Hz
-2 dBmV
39.9 dB
0
0
8
Locked
QAM256
3
429000000 Hz
-1.7 dBmV
39.8 dB
0
0
9
Locked
QAM256
4
435000000 Hz
-2 dBmV
39.2 dB
0
0
10
Locked
QAM256
5
441000000 Hz
-1.9 dBmV
39.4 dB
0
0
11
Locked
QAM256
6
447000000 Hz
-1.7 dBmV
39.4 dB
0
0
12
Locked
QAM256
7
453000000 Hz
-1.6 dBmV
39.5 dB
0
0
13
Locked
QAM256
8
459000000 Hz
-1.9 dBmV
39.6 dB
0
0
14
Locked
QAM256
9
465000000 Hz
-1.7 dBmV
39.9 dB
0
0
15
Locked
QAM256
10
471000000 Hz
-1.6 dBmV
40.2 dB
0
0
16
Locked
QAM256
11
477000000 Hz
-1.7 dBmV
40.1 dB
0
0
17
Locked
QAM256
12
483000000 Hz
-2.1 dBmV
39.9 dB
0
0
18
Locked
QAM256
13
489000000 Hz
-2.2 dBmV
39.6 dB
0
0
19
Locked
QAM256
14
495000000 Hz
-2.1 dBmV
39.8 dB
0
0
20
Locked
QAM256
15
507000000 Hz
-2 dBmV
39.9 dB
0
0
21
Locked
QAM256
16
513000000 Hz
-2.3 dBmV
39.5 dB
0
0
22
Locked
QAM256
18
525000000 Hz
-2.3 dBmV
39.4 dB
0
0
23
Locked
QAM256
19
531000000 Hz
-2.2 dBmV
39.5 dB
0
0
24
Locked
QAM256
20
543000000 Hz
-2.4 dBmV
39.4 dB
0
0
Upstream Bonded Channels
Channel
Lock Status
US Channel Type
Channel ID
Symbol Rate
Frequency
Power
1
Locked
ATDMA
5
5120 Ksym/sec
35600000 Hz
42.9 dBmV
2
Locked
ATDMA
1
2560 Ksym/sec
10400000 Hz
43 dBmV
3
Locked
ATDMA
2
5120 Ksym/sec
16400000 Hz
42.7 dBmV
4
Locked
ATDMA
3
5120 Ksym/sec
22800000 Hz
42.7 dBmV
5
Locked
ATDMA
4
5120 Ksym/sec
29200000 Hz
42.9 dBmV
6
Locked
ATDMA
6
2560 Ksym/sec
40400000 Hz
45.9 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
Extended Upstream Transmit Power
Enable Extended Upstream Transmit Power
Current System Time:Fri Apr 21 10:26:32 2023
System Up Time:05:14:37
5
0