Rogers Hitron CODA-4582 Hardware

[Jeffj]

---

@JohnyR wrote:

Wasted my whole day with this new modem. Swapped the unit twice, and still having the same issue: getting 20mbps down if I'm lucky, instead of the 800 that I usually average. I've noticed that my upstream power levels are way below spec. My old modem was between 41-43, now it is 31-35 (35 is min recommended)

I've spoke to tech support atleast 6 times today, and they are all pretty useless (I forgot how much better and technically-knowledged level1 techs on third party ISPs are). I keep mentioning that my upstream signals are BELOW spec and they brush it off -- probably because they dont understand it.

What is my course of action here? I can't get my old modem back as its marked to be shipped off to whereever. 

---

I wouldnt be concerend about your upstream numbers at all. the CMTS tells your modem what power it needs to make it back. your modem does not determin them at all. Mine are 30.XX no issues, always have been even before the new modem. As for your down stream issues I'd see if @RogersDave can run a diagnostic on your modem and see what he can find. 

WHats your downstream numbers look like?

[Jeffj]

---

@JohnyR wrote:

Wasted my whole day with this new modem. Swapped the unit twice, and still having the same issue: getting 20mbps down if I'm lucky, instead of the 800 that I usually average. I've noticed that my upstream power levels are way below spec. My old modem was between 41-43, now it is 31-35 (35 is min recommended)

I've spoke to tech support atleast 6 times today, and they are all pretty useless (I forgot how much better and technically-knowledged level1 techs on third party ISPs are). I keep mentioning that my upstream signals are BELOW spec and they brush it off -- probably because they dont understand it.

What is my course of action here? I can't get my old modem back as its marked to be shipped off to whereever. 

---

I wouldnt be concerend about your upstream numbers at all. the CMTS tells your modem what power it needs to make it back. your modem does not determin them at all. Mine are 30.XX no issues, always have been even before the new modem. As for your down stream issues I'd see if @RogersDave can run a diagnostic on your modem and see what he can find. 

WHats your downstream numbers look like?

[gp-se]

This is a known issue, and Rogers Dave is looking into it, I also suffer from this issue. You can log into the modem then hit reboot, this will temporarily fix it. Also your upstream signals are fine, the higher the number the more power the modem is using to reach the CMTS. In your case the modem isn't use much dbmv, which is a good thing. 41-43 meant your modem was using a lot of power trying to keep the signal to the CMTS, now its barely using any power to communicate to the CMTS.
I hope they find a fix for the slow speeds though, sometimes I'm at full speeds, other times 150mb/s max on my Gigabit plan. With the old CGN my speeds were constant, but had terrible latency.

[dosto]

I just "upgraded" my modem today too and my speeds have dropped from over 700 Mbps to under 100 Mbps

[mahomed]

I got the new modem as well and my signal levels for the upstream seem low.

Downstream Overview

Port ID	Frequency (MHz)	Modulation	Signal strength (dBmV)	Channel ID	Signal noise ratio (dB)
1	591000000	256QAM	5.500	31	37.093
2	363000000	256QAM	6.900	10	37.636
3	369000000	256QAM	7.100	11	37.636
4	375000000	256QAM	7.600	12	37.636
5	381000000	256QAM	7.200	13	37.636
6	387000000	256QAM	6.700	14	37.356
7	393000000	256QAM	6.700	15	36.610
8	399000000	256QAM	6.700	16	37.356
9	405000000	256QAM	5.900	17	37.636
10	411000000	256QAM	5.900	18	37.356
11	417000000	256QAM	6.600	19	37.636
12	423000000	256QAM	7.000	20	37.636
13	429000000	256QAM	7.700	21	37.636
14	435000000	256QAM	8.100	22	37.636
15	441000000	256QAM	7.900	23	37.356
16	447000000	256QAM	6.900	24	37.356
17	555000000	256QAM	4.000	25	36.610
18	561000000	256QAM	3.600	26	36.387
19	567000000	256QAM	2.900	27	36.387
20	573000000	256QAM	3.800	28	36.387
21	579000000	256QAM	4.200	29	35.780
22	585000000	256QAM	4.300	30	36.387
23	357000000	256QAM	6.900	9	37.636
24	597000000	256QAM	6.100	32	37.356
25	603000000	256QAM	6.100	33	37.356
26	609000000	256QAM	5.500	34	36.610
27	615000000	256QAM	4.700	35	37.356
28	621000000	256QAM	3.600	36	36.610
29	633000000	256QAM	3.100	37	36.387
30	639000000	256QAM	3.300	38	36.610
31	645000000	256QAM	4.300	39	36.387
32	651000000	256QAM	3.400	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	38595668	ATDMA - 64QAM	38.750	3	3200000
2	30596000	ATDMA - 64QAM	34.750	1	6400000
3	23700000	ATDMA - 64QAM	33.250	2	6400000

perhaps this modem draws less power?

@RogersDave Can you please add me to the modem firmware program so I can get the latest firmware as it comes out?

Thanks

[JohnyR]

Yes but there also exists a minumum amount of power. I don't know about you, but this is almost unusable. I'm getting 1/8th the speed I should be getting.. not a few Mbps off. Not only that, I'm getting an average of 1% packetloss.

[Double_K]

---

@JohnyR wrote:

Wasted my whole day with this new modem. Swapped the unit twice, and still having the same issue: getting 20mbps down if I'm lucky, instead of the 800 that I usually average. I've noticed that my upstream power levels are way below spec. My old modem was between 41-43, now it is 31-35 (35 is min recommended)

I've created a ticket with engineering and requested that a tech come out to try and fix my upstream power levels. 

---

@JohnyR, 31-35 may be in spec.

From the datasheet: "Upstream transmit signal level: +11 to 65dBmV"

It does not break it down for TDMA 64QAM 3 channel (which is what Rogers uses), so optimum level is a guess at best right now.  The midpoint is 38dBmV, and you're really close to that.  You will definitely see a lower power requirement/negotiation from the CMTS for these devices - that's why Rogers is going to save electricity costs by deploying these units since they require less power from the CMTS.

From the 2015 announcement: "In addition to the increased network performance, the energy-efficient CODA will help reduce power usage and lower the cable operator’s carbon footprint." Source

The speed issues are being tracked in the firmware thread, and RogersDave is asking affected users to post their info in that thread using his template.

http://communityforums.rogers.com/t5/forums/forumtopicpage/board-id/Getting_connected/message-id/381...

[JohnyR]

Thanks for that explanation, I did not know that!

Looks like my speeds have significantly improved, but nowhere near what they were before. PL is still about 1%.

Will submit a reply in that thread.

[housenuts]

did you do the auto setup and input a wifi password?

if so, cusadmin / (your wifi password)

[Abspatel]

For some reason this modem isn't able to correctly identify when it's connected to a gigabit ethernet card. I've got 3 laptops, all of which were able to get the yellow light on the prior black modem indicating a gigabit connection. Now all 3 are showing the green light and running a speed test caps out at around 95mbps.