Rogers Hitron CODA-4582 Hardware

[Double_K]

Announced 13-December-2016 by @RogersDave  http://communityforums.rogers.com/t5/forums/forumtopicpage/board-id/Getting_connected/message-id/379...

Credit to @Hybrid_Noodle

Hitron website: http://www.hitron-americas.com/product/coda-4582/

Datasheet: http://www.hitron-americas.com/wp-content/uploads/2016/09/CODA-4582-Datasheet.pdf

60W Power Supply built into unit

Pictures of Hardware Version 1A:

***Added Labels***

[chemical1]

Hi yes over Ethernet, right after I set it up.  Did switch to the free trial of the Gigabit.

Thank you for your reply 🙂

[Datalink]

Ok, if thats done on a desktop, I'd expect to see much higher, somewhere in the 850 to 950 Mb/s range on the downstream, 30 Mb/s on the upstream.  If thats done on a laptop, it wouldn't surprise me. We had an Acer laptop, about 4 years old that wouldn't go above 200 Mb/s wired or wireless.  So, the test device capability is very important when it comes to proving that the gigabit service is indeed running at gigabit rates. 

Can you log into the modem, navigate to the STATUS .... DOCSIS WAN tab, copy the Downstream and Upstream tables and paste them into a post.  The copy and paste process will paste in the text contents into the post.  Those tables are the cable signal levels and signal to noise ratios which will be of interest at the present time.

[chemical1]

Downstream Overview

Port ID	Frequency (MHz)	Modulation	Signal strength (dBmV)	Channel ID	Signal noise ratio (dB)
1	591000000	256QAM	-0.900	7	37.636
2	855000000	256QAM	-1.100	3	35.084
3	861000000	256QAM	-2.100	4	34.346
4	579000000	256QAM	-1.100	5	37.356
5	585000000	256QAM	-0.900	6	37.356
6	849000000	256QAM	-0.400	2	35.780
7	597000000	256QAM	-0.600	8	37.636
8	603000000	256QAM	-0.400	9	37.356
9	609000000	256QAM	-0.300	10	37.356
10	615000000	256QAM	-0.600	11	37.356
11	621000000	256QAM	-0.500	12	37.356
12	633000000	256QAM	-0.200	13	37.636
13	639000000	256QAM	0.200	14	37.636
14	645000000	256QAM	-0.300	15	37.356
15	651000000	256QAM	-0.100	16	37.356
16	657000000	256QAM	-0.100	17	37.356
17	663000000	256QAM	-0.100	18	37.356
18	669000000	256QAM	-0.400	19	36.610
19	675000000	256QAM	-0.600	20	36.610
20	681000000	256QAM	-0.800	21	36.610
21	687000000	256QAM	-0.100	22	37.356
22	693000000	256QAM	-0.400	23	36.610
23	699000000	256QAM	0.100	24	37.356
24	705000000	256QAM	-0.200	25	36.610
25	711000000	256QAM	-0.200	26	36.610
26	717000000	256QAM	-0.300	27	36.387
27	723000000	256QAM	-0.400	28	36.387
28	825000000	256QAM	0.900	29	37.356
29	831000000	256QAM	0.500	30	36.387
30	837000000	256QAM	0.800	31	36.610
31	843000000	256QAM	0.100	32	36.387
32	303000000	256QAM	-3.100	1	38.983

[chemical1]

Upstream Overview

Port ID	Frequency (MHz)	Modulation	Signal strength (dBmV)	Channel ID	Bandwidth
1	30596000	ATDMA - 64QAM	46.500	1	6400000
2	38595492	ATDMA - 64QAM	49.250	3	3200000
3	23700000	ATDMA - 64QAM	48.000	2	6400000

[Datalink]

Can you paste in the OFDM section as well which is in the middle of the upstream and downstream section.  The upstream levels are in spec, but for a CODA-4582 running DOCSIS 3.1, which is shown in the OFDM section, they're far higher than they should be.  I'd like to see the OFDM section just to confirm that the modem is in fact running DOCSIS 3.1 on the downstream side.  The downstream levels and signal to noise ratios for the DOCSIS 3.0 channels are good.  

At first glance I'd say that you have a cable issue on the go. 

Are you in a house or apartment/condo/highrise building?

[chemical1]

OFDM Downstream Overview

Receiver	FFT type	Subcarr 0 Frequency(MHz)	PLC locked	NCP locked	MDC1 locked	PLC power(dBmv)
0	4K	290600000	YES	YES	YES	-2.400002
1	NA	NA	NO	NO	NO	NA

[chemical1]

OFDM/OFDMA Overview

Channel Index	State	lin Digital Att	Digital Att	BW (sc's*fft)	Report Power	Report Power1_6	FFT Size
0	DISABLED	0.5000	0.0000	0.0000	-inf	-1.0000	4K
1	DISABLED	0.5000	0.0000	0.0000	-inf	-1.0000	4K

[chemical1]

I am in a house and I had a new cable buried a few years ago to the house.

[Datalink]

Ok, there is definitely something amiss.  The modem shouldn't be flipping from DOCSIS 3.1 to 3.0 as a result of the OFDM channel disabling, and, the OFDM channel shouldn't be disabling.  It should be rock solid.  Your signal levels are rather odd to say the least.  

Just for a quick explanation, modems in the past used DOCSIS, 1, 2, and then 3, each version bringing increased downstream and upstream channels and more security features as well.  DOCSIS 3.1 is the next evolution of modem cable signal technology, using thousands of sub-carriers across a 192 Mhz wide channel (max) to carry the data.  At the present time, DOCSIS 3.1 is enabled on the downstream side.  The upstream DOCSIS 3.1 will hopefully be enabled sometime this year although it was originally predicted to be up and running by now.  So, all the best plans of mice and men as they say ......

So, usually on the 3.0 side, as the external cable and connectors age, the signal losses thru the cable, from one end to the other increase over time.  Usually the downstream 3.0 levels drop and the upstream 3.0 levels from the modem increase in order to make up for the signal losses.  Your signal levels are unusual as the downstream are fine, but the upstream are elevated above the normal levels for 3.0 operation, still in spec, but out of the normal range on the high side.  

With DOCSIS 3.1 running, those upstream 3.0 channels are usually running at a much lower level, around the 30 dBmV range, whereas yours are up in the high 40's range.  The failure point that Rogers uses is 52 dBmV although DOCSIS 3.0 specs call for 51 dBmV (max) for three or four channel upstream operation. 

So, some cable or connector issue is causing the modem to drop out of DOCSIS 3.1 mode and at the same time driving up the modem's upstream 3.0 signal levels to make up for signal losses back to the Cable Modem Termination System (CMTS).  The CMTS actually controls the modem's output levels and commands the modem to increase or decrease its output levels to meet a minimum of 0 dBmV and 25 dB signal to noise ratio upon arrival at the CMTS, from what I remember. 

The question is, can the cable signal issue be detected by tech support?  Call them and ask the CSR to run a signal check on the modem.  Keep that DOCSIS WAN tab open and advise the CSR that the modem is dropping out of DOCSIS 3.1 mode.  Having that tab open will allow you to indicate what mode the modem is operating in, 3.0 or 3.1.  It shouldn't be flipping.  Also ask the CSR to check the noise level at the modem.  That might point to a  noise issue with your cable line or possibly an area issue.  Let the tech know of any other issues you are having with the internet service or with any other cable based service as well, such as pixelating tv's for example. 

Those buried cables don't last forever.  Our first cable lasted over 10 years, the next one only lasted two years.  So, maybe this is something simple like a cable and/or connector replacement.  

Please let us know how the conversation with tech support goes. 

[Hucklebury]

Datalink

Please look at my signals and let me know what you think. Coda modem on 31 firmware trial. My package is now 500/20 increase the package again from 250/20. Still not seeing a big difference here.

Port ID	Frequency (MHz)	Modulation	Signal strength (dBmV)	Channel ID	Signal noise ratio (dB)
1	591000000	256QAM	-0.100	7	38.605
2	567000000	256QAM	-1.000	3	38.983
3	573000000	256QAM	-0.700	4	38.605
4	579000000	256QAM	-0.800	5	38.983
5	585000000	256QAM	-0.600	6	38.983
6	561000000	256QAM	-1.300	2	38.605
7	597000000	256QAM	0.300	8	38.983
8	603000000	256QAM	0.500	9	40.366
9	609000000	256QAM	0.400	10	38.983
10	615000000	256QAM	0.200	11	38.983
11	621000000	256QAM	0.100	12	38.983
12	633000000	256QAM	0.800	13	38.983
13	639000000	256QAM	1.100	14	38.983
14	645000000	256QAM	1.700	15	38.983
15	651000000	256QAM	2.100	16	38.983
16	657000000	256QAM	2.100	17	38.983
17	663000000	256QAM	1.900	18	38.605
18	669000000	256QAM	1.900	19	38.983
19	675000000	256QAM	2.500	20	38.983
20	681000000	256QAM	2.700	21	38.983
21	687000000	256QAM	2.500	22	38.983
22	693000000	256QAM	2.400	23	38.605
23	699000000	256QAM	1.500	24	38.605
24	705000000	256QAM	-0.200	25	38.983
25	711000000	256QAM	-2.600	26	38.605
26	717000000	256QAM	-3.700	27	38.605
27	723000000	256QAM	-3.300	28	38.983
28	729000000	256QAM	-2.400	29	38.605
29	735000000	256QAM	-1.400	30	38.605
30	741000000	256QAM	-0.800	31	38.983
31	747000000	256QAM	-0.200	32	38.983
32	555000000	256QAM	-1.300	1	38.983

OFDM Downstream Overview

Receiver	FFT type	Subcarr 0 Frequency(MHz)	PLC locked	NCP locked	MDC1 locked	PLC power(dBmv)
0	4K	251600000	YES	YES	YES	-1.299999
1	NA	NA	NO	NO	NO	NA

Upstream Overview

Port ID	Frequency (MHz)	Modulation	Signal strength (dBmV)	Channel ID	Bandwidth
1	30596000	ATDMA - 64QAM	38.750	1	6400000
2	38596000	ATDMA - 64QAM	40.750	3	3200000
3	23700000	ATDMA - 64QAM	38.750	2	6400000

OFDM/OFDMA Overview

Channel Index	State	lin Digital Att	Digital Att	BW (sc's*fft)	Report Power	Report Power1_6	FFT Size
0	DISABLED	0.5000	0.0000	0.0000	-inf	-1.0000	4K
1	DISABLED	0.5000	0.0000	0.0000	-inf	-1.0000	4K

[Datalink]

@chemical1 I made a mistake last night, grrrr.  When I looked at the last posts with the OFDM and OFDM/OFDMA sections, I didn't look carefully enough at the OFDM/OFDMA title.  Those are two different data sets.  The ODFM is for the Downstream DOCSIS 3.1 channel, the OFDM/OFDMA channel is for the Upstream DOCSIS 3.1 channel which is not enabled yet.  So, that means that the modem is not flipping between DOCSIS 3.0 and 3.1 modes.  Thats good news.  I apologize for my inattention to that.  I didn't realize it until I was looking at @Hucklebury's signal levels this morning.  

That doesn't change the fact that the upstream levels are very high for a modem running DOCSIS 3.1 on the Downstream side.  So, there is still some cable and/or connector issue that is causing that.

Also note that there are a set of customers who are experiencing slower that expected data rates when the modem is running DOCSIS 3.1.  You appear to be in that category at the moment.  If you haven't called tech support just yet, please ask the tech about the background noise levels in the upstream and OFDM frequency ranges.  That might be one explanation for the elevated DOCSIS 3.0 upstream levels and poor performance on the DOCSIS 3.1 downstream side.

[Datalink]

@Hucklebury your signal levels are ok from what I can see.  There is a roll off in the 700 Mhz range, so, the signal levels have a slightly larger range than I would like to see in the DOCSIS 3.0 Downstream side, but, they're well within spec.  The Signal to Noise ratios are all fine.  The upstream is a little higher than I would expect with DOCSIS 3.1 running, but, once again, well within spec.  The DOCSIS 3.1 OFDM section, I can't say at this time as I don't know if the user interface problem with incorrect data display has been addressed.  I'll have to confirm that with Dave. 

[Hucklebury]

Thank you
Please let me know what Dave has to say
Greatly appreciated

[xcvxdfvdfs]

Using Windows 10, can't connect to ipv4 websites. Ipv4 connectivity says no internet access. Ipv6 says Internet. All of a sudden I can't use the internet, only a few pages work such as google, Facebook, YouTube. I've called tech support 3 times with no help, Exchanged the modem this morning but the problem still persists and the tech wants me to exchange for yet another one!

I've tried uninstalling my network, switching from wireless to wired, and reinstalling the drivers, flushing dns,

Tried network reset, as well as all the suggestions from windows 10 connection issues...still nothing. Problem also happens when I connect to the WiFi network with my mobile phone

[James_Greene]

Hi, I just got an upgrade to my internet package. I also got the new “Gigabit” modem. When I installed everything, I have 2 channels now. One is 2.4G and the other is 5G. I know that the 5G option gets better speed. I tested this with some speed tests. However, on my WIFI devices with the 5G option, I usually only get 4 out of 5 bars for signal strength. On the 2.4G option, I always get 5 out of 5 bars for signal strength. Not sure how the signal strength plays a factor in how fast the internet speed is. My question is this. Should I continue to use the 5G connection with weaker signal strength or use the 2.4G connection with full signal strength? By the way, I don’t have both turned on at the same time. Right now, I have the 2.4G option turned off on my router settings. Thanks for the help. Jim

[Hucklebury]

I can suggest to use an app on your device,,, a wifi analyzer to see which channels are mostly being used. for 5 GHz you can try to set the channel at 149 if you want to run 2.4 GHz at the same time set it to auto.

[gp-se]

@James_Greene

---

@James_Greene wrote:

Hi, I just got an upgrade to my internet package. I also got the new “Gigabit” modem. When I installed everything, I have 2 channels now. One is 2.4G and the other is 5G. I know that the 5G option gets better speed. I tested this with some speed tests. However, on my WIFI devices with the 5G option, I usually only get 4 out of 5 bars for signal strength. On the 2.4G option, I always get 5 out of 5 bars for signal strength. Not sure how the signal strength plays a factor in how fast the internet speed is. My question is this. Should I continue to use the 5G connection with weaker signal strength or use the 2.4G connection with full signal strength? By the way, I don’t have both turned on at the same time. Right now, I have the 2.4G option turned off on my router settings. Thanks for the help. Jim

---

Always use 5Ghz when possible, 2.4Ghz is VERY congested, so speeds will be lower even though signal strength is higher. 

[James_Greene]

---

@gp-se wrote:

@James_Greene

---

@James_Greene wrote:

Hi, I just got an upgrade to my internet package. I also got the new “Gigabit” modem. When I installed everything, I have 2 channels now. One is 2.4G and the other is 5G. I know that the 5G option gets better speed. I tested this with some speed tests. However, on my WIFI devices with the 5G option, I usually only get 4 out of 5 bars for signal strength. On the 2.4G option, I always get 5 out of 5 bars for signal strength. Not sure how the signal strength plays a factor in how fast the internet speed is. My question is this. Should I continue to use the 5G connection with weaker signal strength or use the 2.4G connection with full signal strength? By the way, I don’t have both turned on at the same time. Right now, I have the 2.4G option turned off on my router settings. Thanks for the help. Jim

---

Always use 5Ghz when possible, 2.4Ghz is VERY congested, so speeds will be lower even though signal strength is higher. 

---

Thanks for the response.  I'll stick with 5G for now.  

[James_Greene]

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@Hucklebury wrote:

I can suggest to use an app on your device,,, a wifi analyzer to see which channels are mostly being used. for 5 GHz you can try to set the channel at 149 if you want to run 2.4 GHz at the same time set it to auto.

---

Thanks for the suggestion.  I was only planning on running one or the other.  At this rate, I'll stick with 5G.  I jus wasn't sure if the decrease in signal strength was going to affect my speed.

[Hucklebury]

The higher channels on 5G will give you a stronger signal. That's why I suggested ch. 149

[gp-se]

---

@James_Greene wrote:

---

@Hucklebury wrote:

I can suggest to use an app on your device,,, a wifi analyzer to see which channels are mostly being used. for 5 GHz you can try to set the channel at 149 if you want to run 2.4 GHz at the same time set it to auto.

---

Thanks for the suggestion.  I was only planning on running one or the other.  At this rate, I'll stick with 5G.  I jus wasn't sure if the decrease in signal strength was going to affect my speed.

---

On the Gateway keep with 2.4Ghz and 5Ghz running, because not all devices support 5Ghz, some older or cheaper/basic devices only support 2.4Ghz. However any device that supports both 2.4Ghz and 5Ghz, always choose 5Ghz. 

Also as @Hucklebury mentioned, on the gateway for 5Ghz set the channel to 149-165, don't use the lower channels (36-48)

You want to use the higher channels on 5Ghz because they transmit at proper signal levels, the lower channels (36-48) transmit very weak on the gateway.