16 replies to this topic

[Blunted 2]

what should this be for optimum online

Frequency 603000000 Hz Locked
Signal to Noise Ratio 38 dB
Power Level 0 dB
The Downstream Power Level reading is a snapshot taken at the time this page was requested. Please Reload/Refresh this Page for a new reading

Upstream Value
Channel ID 3
Frequency 33008000 Hz Ranged
Power Level 47 dBmV

[FallowEarth]

Generally speaking:

TX Power: 30 – 58dBmV
RX Power: -15 – +15dBmV
SNR: min. 24 dB

[Blunted 2]

also mine doesnt have those settings and all that is there is it.   should there be more?

[dann0]

Hey Blunted2, you actually can't just change any of those levels.
It is all relative to your signal level, the condition of the cable plant, and your home cable condition.

Your levels look good, they appear to be from a Motorola modem, and I am going to take a guess at the model: An SB3100 since the RX level is reading zero.
That is unlees your input happens to be zero dBmV at the moment.

[Blunted 2]

i know i cant change it but was wondering if it was where it should beif there is something i am missing. 

[nhoughtaling]

Quote

what should this be for optimum online

Frequency 603000000 Hz Locked
Signal to Noise Ratio 38 dB
Power Level 0 dB
The Downstream Power Level reading is a snapshot taken at the time this page was requested. Please Reload/Refresh this Page for a new reading

Upstream Value
Channel ID 3
Frequency 33008000 Hz Ranged
Power Level 47 dBmV

I know a little about this.  the Signal to noise ratio is a little high, the Downstream power level should be around 0 the Upstream power level is the level the modem is pushing out going back to the Head End  there is really only 2 levels too worry about thats the signal to noise and the downstream power level(amount of signal hitting the back of the modem)

[dann0]

Quote

i know i cant change it but was wondering if it was where it should beif there is something i am missing. 

Nope, everything looks good- was I right on the modem model number? If not, what model Motorola is it?

[Blunted 2]

sb5100

[dann0]

Quote

sb5100

Good, then your receive level of 0 dB is perfect, and you couldn't ask for a better downsteam SNR (38 dBmV).
That is the difference between the signal level and the noise level, the larger the ratio (in dB), the better.
Simply, the closer your signal level is to your noise level, the better chance you have of experiencing interference from that noise.

[Blunted 2]

cool man thx everyone

[Elite.Pete]

Downstream Value 
Frequency 705000000 Hz

Signal To Noise Ratio 35.6 dB

Power Level -6.3 dBmV
The Downstream Power Level reading is a snapshot taken at the time this page was requested. Please Reload/Refresh this Page for a new reading


Upstream Value
Channel ID 4
Frequency 22000000 Hz
Power 50.5 dBmV


those look good? for comcast

[dann0]

Quote

Downstream Value 
Frequency 705000000 Hz

Signal To Noise Ratio 35.6 dB

Power Level -6.3 dBmV
The Downstream Power Level reading is a snapshot taken at the time this page was requested. Please Reload/Refresh this Page for a new reading


Upstream Value
Channel ID 4
Frequency 22000000 Hz
Power 50.5 dBmV


those look good? for comcast

They look good.
It looks like you have a little more attenuation in line, maybe you run through more than one splitter before the cable hits the modem, but I would not worry.
Those numbers are well within the comfort range.
Both your guys levels are better than mine, and I have have no problems.
I have an extra 3 way splitter in my comp room, because I am always messing around with the setup.

Frequency 595779700 Hz Locked
Signal to Noise Ratio 36 dB
Power Level 7 dBmV  (this would be a lot lower, but I have an amp, which is NOT recommended)
The Downstream Power Level reading is a snapshot taken at the time this page was requested. Please Reload/Refresh this Page for a new reading

Upstream Value
Channel ID 4
Frequency 22000000 Hz Ranged
Power Level 50 dBmV

[gc]

is this any good for my rr connection?? have the 5/384


Frequency 645000000 Hz Locked
Signal to Noise Ratio 38 dB
Power Level -8 dBmV
The Downstream Power Level reading is a snapshot taken at the time this page was requested. Please Reload/Refresh this Page for a new reading

Upstream Value
Channel ID 4
Frequency 33008000 Hz Ranged
Power Level 50 dBmV

[REV0LUTI0NIZED]

Downstream  Value
Frequency 579000000 Hz
Signal to Noise Ratio 37 dB
QAM 256
Network Access Control Object ON
Power Level -3 dBmV 
The Downstream Power Level reading is a snapshot taken at the time this page was requested. Please Reload/Refresh this Page for a new reading

Upstream Value
Channel ID 4
Frequency 22800000 Hz
Ranging Service ID 6812
Symbol Rate 2.560 Msym/s
Power Level 52 dBmV

[CableTech01]

Downstream  Value
Frequency 729000000 Hz   
Signal to Noise Ratio 34 dB 
QAM 256
Network Access Control Object ON
Power Level -3 dBmV   The Downstream Power Level reading is a snapshot taken at the time this page was requested. Please Reload/Refresh this Page for a new reading 


Upstream  Value
Channel ID 2
Frequency 37000000 Hz 
Ranging Service ID 316
Symbol Rate 3.200 Msym/s
Power Level 46 dBmV 

[inmate717]

This is what i got after i was bored and wanted to see what you guys were talking about

Downstream Value 
Frequency 567000000 Hz

Signal To Noise Ratio 35.7 dB

Power Level 7.0 dBmV
The Downstream Power Level reading is a snapshot taken at the time this page was requested. Please Reload/Refresh this Page for a new reading


Upstream Value
Channel ID 2
Frequency 33000000 Hz
Power 41.0 dBmV

[cmancool4]

I have just been having a lot of trouble with my power levels coming into my modem and actually called Optimum.  They did not know too much about these numbers other than just the acceptable range and could not help me anymore than that.  My downstream power was at 9dbmV and my download was down to 5 mbps from when it was originally above 9mbps.  I started messing around with an amplifier along with splitters (attenuators) and I got  my downstream power down to 1dbmV and my upstream power to 49 dbmV and my download jumped up over 9Mbps and my upload up to around 1mbps.  The power level for the downstream should be as close to 0dbmV as you can get it.  For me, the best download speeds came when I had between 1 and 3 dbmV.

I have the Motorolla SBV5120 modem.

Frequency 603000000 Hz   
Signal to Noise Ratio 32 dB 
QAM 256
Network Access Control Object ON
Power Level 1 dBmV   The Downstream Power Level reading is a snapshot taken at the time this page was requested. Please Reload/Refresh this Page for a new reading 


Upstream  Value
Channel ID 1
Frequency 25008000 Hz 
Ranging Service ID 3
Symbol Rate 3.200 Msym/s
Power Level 49 dBmV