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***

[Webslinger]

A tech will be coming out to visit. Thank you. I am on the correct speed profile. And I also tried ethernet ports 2,3 and 4 using a wired connection.

[Datalink]

@Alex4161 and @Webslinger.  The upstream signal levels might be absolutely fine.  The days of assuming that 36 to 40 dBmV on the upstream path are now long gone.  Rogers uses pre-equalization in the upstream path (the CMTS transmits pre-equalization data to the CM).  That process looks at the signal levels that arrive at the CMTS after which the CMTS commands the modem to adjust the upstream channel outputs up or down so that the arriving signal levels at the CMTS meet a predetermined signal level.  So, its possible now to see variations in the upstream signal levels, which makes troubleshooting a little more complicated.  As long as the CMTS is satisfied, that is what counts.  If there was a cable or connector issue, you would see those signal levels climb but that isn't the case here.

Also note that the CODA-4582 does appear to operate with lower upstream signal levels and is quite happy to do so.  Here's an example, before, with a CGNM-3552 and after, with the CODA-4582:

Upstream Overview 

Port       Frequency    Modulation                Signal         Channel
ID                (MHz)                                          strength           ID       BandWidth
                                                                         (dBmV)

1           23700000     ATDMA - 64QAM     39.250             2           6400000             CGNM-3552
2          38595999     ATDMA - 64QAM     40.750              3           3200000
3          30596000     ATDMA - 64QAM     39.250              1           6400000

1          23700000    ATDMA - 64QAM      32.500              2           6400000             CODA-4582
2         38595824     ATDMA - 64QAM      35.250              3           3200000
3         30596000     ATDMA - 64QAM      31.250              1           6400000

So, as you can see from my upstream signal levels, they have dropped and the're not all equal.  With those signal levels I've seen 950/+40 on speedtests.  

So, at the present time, there is something up with @Webslinger's data rates, but, signal levels may not have any part in this issue. 

[Webslinger]

---

@Datalink wrote:

So, at the present time, there is something up with @Webslinger's data rates, but, signal levels may not have any part in this issue. 

---

A tier 2 support staff members claims to have noticed a slow response from my modem and is sending out a tech tomorrow. I guess we'll find out whether there is a signal level issue.

There was a fiber cut in my area from Dec. 30-31st. The issue is supposedly fixed now. However, I wonder if the issue hasn't been resolved properly.

Downstream Overview

Port ID	Frequency (MHz)	Modulation	Signal strength (dBmV)	Channel ID	Signal noise ratio (dB)
1	591000000	256QAM	-3.500	31	37.356
2	657000000	256QAM	-3.500	41	37.356
3	663000000	256QAM	-3.100	42	37.356
4	669000000	256QAM	-2.900	43	37.636
5	675000000	256QAM	-3.000	44	37.356
6	681000000	256QAM	-2.700	45	37.636
7	687000000	256QAM	-3.000	46	37.356
8	693000000	256QAM	-2.900	47	37.356
9	699000000	256QAM	-2.800	48	37.356
10	705000000	256QAM	-3.100	49	37.356
11	711000000	256QAM	-4.000	50	37.356
12	717000000	256QAM	-4.400	51	36.610
13	723000000	256QAM	-4.700	52	36.610
14	825000000	256QAM	-6.300	53	36.610
15	831000000	256QAM	-7.000	54	35.780
16	837000000	256QAM	-7.500	55	35.595
17	843000000	256QAM	-8.200	56	35.084
18	849000000	256QAM	-8.400	57	35.084
19	567000000	256QAM	-3.700	27	36.610
20	573000000	256QAM	-3.900	28	36.387
21	579000000	256QAM	-3.800	29	36.610
22	585000000	256QAM	-3.700	30	36.610
23	855000000	256QAM	-8.200	58	34.926
24	597000000	256QAM	-3.700	32	37.356
25	603000000	256QAM	-3.800	33	37.356
26	609000000	256QAM	-3.800	34	36.610
27	615000000	256QAM	-3.200	35	36.610
28	861000000	256QAM	-7.500	59	35.595
29	633000000	256QAM	-3.200	37	36.610
30	639000000	256QAM	-3.200	38	36.610
31	645000000	256QAM	-3.200	39	37.356
32	651000000	256QAM	-3.600	40	36.610

OFDM Downstream Overview

Receiver	FFT type	Subcarr 0 Frequency(MHz)	PLC locked	NCP locked	MDC1 locked	PLC power(dBmv)
0	NA	NA	NO	NO	NO	NA
1	NA	NA	NO	NO	NO	NA

Upstream Overview

Port ID	Frequency (MHz)	Modulation	Signal strength (dBmV)	Channel ID	Bandwidth
1	23699453	ATDMA - 64QAM	29.500	5	6400000
2	38596000	ATDMA - 64QAM	32.500	6	3200000
3	30596000	ATDMA - 64QAM	29.250	4	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

 http://www.speedtest.net/result/5928458207

[Webslinger]

Everyone's hardware version is 1A, correct?

[Alex4161]

Webslinger, Where abouts are you located? I am in the Meadowvale and Hwy 401 area in Scarborough and have had connection issues fir days. There is a open ticket PT00364842 for my area and am posting this reply from my cell connection as both Internet and Cable is down.

[Webslinger]

Agincourt North

[Webslinger]

---

@Datalink wrote:

So, at the present time, there is something up with @Webslinger's data rates, but, signal levels may not have any part in this issue. 

---

Hi,

Care to speculate what might be the issue? Thanks. I'm getting the same results using a wired connection from the modem.

[Datalink]

Looking at your signal levels, there is a high frequency roll-off that is occurring.  The majority are a little low but well within specs, certainly not to any point where you would be seeing any issues.  Speculation on my part is that possibly there is older equipment between your modem and the CMTS which is only designed to operate between 0 to 750 Mhz.  That would cause a rolloff but, it shouldn't cause the low data rates that you are seeing.  If the tech support CSR checked your neighbors who are connected to the same local tap, that would determine if the problem was with your installation or if this was a wider issue.  That would be worth doing in order to dispatch the right technician to tackle the problem.

@RogersDave would be able to check the signal levels and connected equipment and confirm or deny the presence of equipment that might cap the upper frequency.  To do that he would need your modem's MAC address which is found at the back of the modem and in the STATUS page which comes up when you log into the modem. 

To send the MAC address to Dave, click on his name (link) @RogersDave to navigate to his public page.  Select the right hand link to "Send this user a private message"  That will take you to the message composition page which is already addressed.  Fill in a title and in the details add your modem's MAC address, and a brief explanation of the problem.  Since this is New Years day, don't expect a response until sometime next week.  

[Alex4161]

@Datalink

Webslinger could be running RG59 cable instead of RG6 as well which can cause the high frequency drop.  In my home on one of the runs, I have RG59 cable in the walls as the home was built in the 90's when this was the norm. On the other run (where my cable modem is connected to) it is all RG6 wiring that was put in within the last 9 months.  I used to have lots of issues with signal drops on the high frequency channels and Rogers installed an amp to fix the problem.  They suggested that they can do a home run and run new wires but that would be outside the house (not in-wall) and that would look awful.

@Webslinger

How old is your home and would you know if the wiring that is in your home is RG59 or RG6?  The differences in the wiring can be found here:

https://www.youtube.com/watch?v=s6iShJrc56E

 Another option you can try is to find the main Rogers line in your home and disconnect any splitters and connect the modem right to that line and check the levels.  If those levels are good and your speed tests on the wired connection are good, then this could be a wiring/splitter/connector issue that @Datalink talked about.

[Datalink]

Thats an interesting point.  Just to point out, for a 100 foot length, the signal drop at 850 Mhz is 7.5 dB for RG-59 and 6 dB for RG-6, so, not enough to account for the signal drop that is shown.  But, an interesting experiment at this point would be to move the modem to where the cable enters the home and connect the incoming cable directly to the modem to rule out any internal cabling issues.  You would have to take into account the presence of any splitter and how that is connected.  If the high frequency roll-off didn't occur at that point,  it would certainly point to some type of cable issue.  That configuration would also allow @Webslinger to check the data rate for any major differences. @Webslinger you should also check your home cabling for any other splitters that might be in place and which are not rated for higher frequencies.   That has come up in the past in similar cases. 

[Webslinger]

@Alex4161

@Datalink

I have no splitters inside my home before the cable modem. No splitters at all, actually. House was built in '74, I think. It's likely RG59 coming right out of the wall from outside. I was using a CGN3ACR previously, and I was getting 20 Mbps up constantly. However, that was before the fiber cut that occurred Dec.30-31st in my area.

I've sent @RogersDave a PM. Thank you.

[Alex4161]

I just got a automated message from Rogers saying that the ticket I had opened is still ongoing and taking longer to fix.  Looks like it will be some time before the fibre is restored as I am still using cell data to post here and continue.  The Rogers modem connection is not stable and my TV is also spotty at best.  Happy New Year indeed. :^(

[Mayoo]

---

@Datalink wrote:

@Alex4161 and @Webslinger.  The upstream signal levels might be absolutely fine.  The days of assuming that 36 to 40 dBmV on the upstream path are now long gone.  Rogers uses pre-equalization in the upstream path (the CMTS transmits pre-equalization data to the CM).  That process looks at the signal levels that arrive at the CMTS after which the CMTS commands the modem to adjust the upstream channel outputs up or down so that the arriving signal levels at the CMTS meet a predetermined signal level.  So, its possible now to see variations in the upstream signal levels, which makes troubleshooting a little more complicated.  As long as the CMTS is satisfied, that is what counts.  If there was a cable or connector issue, you would see those signal levels climb but that isn't the case here.

Also note that the CODA-4582 does appear to operate with lower upstream signal levels and is quite happy to do so.  Here's an example, before, with a CGNM-3552 and after, with the CODA-4582:

Upstream Overview 

Port       Frequency    Modulation                Signal         Channel
ID                (MHz)                                          strength           ID       BandWidth
                                                                         (dBmV)

1           23700000     ATDMA - 64QAM     39.250             2           6400000             CGNM-3552
2          38595999     ATDMA - 64QAM     40.750              3           3200000
3          30596000     ATDMA - 64QAM     39.250              1           6400000

1          23700000    ATDMA - 64QAM      32.500              2           6400000             CODA-4582
2         38595824     ATDMA - 64QAM      35.250              3           3200000
3         30596000     ATDMA - 64QAM      31.250              1           6400000

So, as you can see from my upstream signal levels, they have dropped and the're not all equal.  With those signal levels I've seen 950/+40 on speedtests.  

So, at the present time, there is something up with @Webslinger's data rates, but, signal levels may not have any part in this issue. 

---

Thank you . I had the same queston and contacted Tech Support and got the same answer. No need to worry about lower upstream values in CODA-4552 ( From your end ) Apparently what Tech Support sees on their end is different and my speeds are fine too

[mhs2]

Something else I noticed that's odd... it seems to happen at 2:00 pm every day on the dot.

[coolspot]

Not sure if this is a one off, but after 10 days of being online, my CODA-4582 has very high ping times. The ping times to Google (8.8.8.8) was 200ms+. Strangely, there was no packet loss - just high latency. 

Rebooting the modem fixed the issue ...

Hopefully this is not a common, recurring problem with the modem?

Thanks.

[coolspot]

Anyone else notice slow uploads in Richmond Hill? I can't get past 25mbps ...

Even my  downloads are slow tonight - only 450mbps on Roger's Spedtest.

[Webslinger]

So, the technician came and went. He replaced the cable running to the modem. He said the signal strength is fine now. But my upload issue persists. He thinks it's a buried cable issue.

I'm still wondering if the fiber cut that was repaired on Dec.30-31st in my area wasn't fully resolved properly.

Or maybe it's the modem. I'm on firmware 2.0.10.19. Does anyone think I should bother trying to swap for another to see if mine has a problem?

http://www.speedtest.net/my-result/5931663013

Downstream Overview

Port ID	Frequency (MHz)	Modulation	Signal strength (dBmV)	Channel ID	Signal noise ratio (dB)
1	591000000	256QAM	-5.100	31	36.387
2	657000000	256QAM	-5.700	41	36.387
3	663000000	256QAM	-5.300	42	36.387
4	669000000	256QAM	-5.100	43	36.610
5	675000000	256QAM	-5.100	44	36.610
6	681000000	256QAM	-4.500	45	36.610
7	687000000	256QAM	-4.800	46	36.610
8	693000000	256QAM	-4.900	47	36.610
9	699000000	256QAM	-4.900	48	36.610
10	705000000	256QAM	-4.800	49	36.610
11	711000000	256QAM	-5.400	50	36.610
12	717000000	256QAM	-5.900	51	36.387
13	723000000	256QAM	-6.400	52	35.780
14	825000000	256QAM	-8.300	53	35.595
15	831000000	256QAM	-8.900	54	34.926
16	837000000	256QAM	-9.300	55	34.926
17	843000000	256QAM	-9.800	56	34.484
18	849000000	256QAM	-10.000	57	34.082
19	567000000	256QAM	-5.500	27	36.387
20	573000000	256QAM	-5.400	28	35.595
21	579000000	256QAM	-5.100	29	36.610
22	585000000	256QAM	-5.100	30	36.610
23	855000000	256QAM	-9.800	58	34.346
24	597000000	256QAM	-5.200	32	36.387
25	603000000	256QAM	-5.000	33	36.387
26	609000000	256QAM	-5.100	34	36.610
27	861000000	256QAM	-9.100	59	34.484
28	621000000	256QAM	-4.800	36	36.610
29	633000000	256QAM	-5.200	37	36.610
30	639000000	256QAM	-5.200	38	36.387
31	645000000	256QAM	-5.400	39	36.610
32	651000000	256QAM	-5.900	40	35.780

OFDM Downstream Overview

Receiver	FFT type	Subcarr 0 Frequency(MHz)	PLC locked	NCP locked	MDC1 locked	PLC power(dBmv)
0	NA	NA	NO	NO	NO	NA
1	NA	NA	NO	NO	NO	NA

Upstream Overview

Port ID	Frequency (MHz)	Modulation	Signal strength (dBmV)	Channel ID	Bandwidth
1	23700000	ATDMA - 64QAM	32.500	5	6400000
2	38596000	ATDMA - 64QAM	35.750	6	3200000
3	30596000	ATDMA - 64QAM	32.500	4	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]

@Webslinger keep the modem for now.  The plan at the present time should be to have @RogersDave have a look at the CMTS to modem path, looking for any equipment which might be limited to 750 Mhz.  That would cause the high frequency roll-off that we see.  The other question is whether you have underground cabling from the local tap to your home, or is it overhead from a utility pole?

[Webslinger]

---

@Datalink wrote:

@Webslinger keep the modem for now.  The plan at the present time should be to have @RogersDave have a look at the CMTS to modem path, looking for any equipment which might be limited to 750 Mhz.  That would cause the high frequency roll-off that we see.  The other question is whether you have underground cabling from the local tap to your home, or is it overhead from a utility pole?

---

There's a green panel on my front lawn. There no utility poles on are street, so I'm guessing it's underground.

I just spoke to a level tier 2 tech. He's seeing signal noise in my area, and he issued a ticket to the engineering team.

[Alex4161]

@Webslinger

I am not sure if you are near me (Meadowvale and Hwy 401) but my Cable signal has been on again off again for some time and the fibre cut, other issues are not resolved it. They should open a burial request but the problem is that it may take a long time being winter. They could run a temp line from the tap around a tree and to the side of the house. It will look bad but it will work.

[Webslinger]

---

@Alex4161 wrote:
@Webslinger

I am not sure if you are near me (Meadowvale and Hwy 401) but my Cable signal has been on again off again for some time and the fibre cut, other issues are not resolved it. They should open a burial request but the problem is that it may take a long time being winter. They could run a temp line from the tap around a tree and to the side of the house. It will look bad but it will work.

---

Hi. that's not really near me (I'm closer to McCowan and Finch).

Anyway, a tier 2 Rogers rep is seeing signal noise in my area, and he issued a ticket to the engineering team.