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Cisco Tuning Adapter Status Troubleshooting

Discussion in 'TiVo Help Center' started by CoxInPHX, Feb 1, 2012.

  1. CoxInPHX

    CoxInPHX COX Communications

    Jan 14, 2011
    Cisco Tuning Adapter Status Troubleshooting - Cisco STA1520 Tuning Adapter

    To help avoid potential Tuning Adapter connection failures, I recommend unplugging and rebooting the Tuning Adapter every 3-4 weeks.

    12/13/13 Update: Cisco has released a new firmware that addresses tuning request failures:
    The Newly Released Firmware is:
    FLASH: STA1.0.0_1520_LR_F.1901 (Cox AZ has released a newer firmware F.2001)
    TiVo seems to have mostly fixed the Tuning Adapter request failures with SW Vers: 20.3.8
    -now will retry tuning requests after a Tuning Adapter fails to respond

    Installing the Cisco Tuning Adapter:
    • Not Using TiVo's On-board MoCA networking:
      If you have a 2 Tuner Premiere or Roamio Basic (or not using the onboard MoCA on the Premiere 4/XL4 or 6 Tuner Roamio Plus/Pro) use the TA's RF pass-thru, the Cisco TA has a slight signal gain, a splitter will reduce your signal by 3-4dB.
    • Using the TiVo's On-board MoCA networking:
      If you are using the onboard MoCA of the Premiere 4/XL4 or 6 Tuner Roamio Plus/Pro then you need to use a splitter, the Cisco TA will not pass MoCA frequencies. Using a MoCA POE Filter before the Tuning Adapter may be necessary as shown in the Cox install sheet. It was for me The excess MoCA noise caused my Tuning Adapter to fail tuning request for SDV channles. Once the POE Filter was in-place the TA worked fine again.
    • Also, If you have a relatively high signal >3dBmV and don't mind the extra coax cabling, using a 2-way splitter would assure you do not loose a signal on non-SDV channels if the TA does go off-line. I find that rebooting the TA and TiVo every 3 weeks mostly eliminates the lost TA connections.

    Cisco Tuning Adapter Front Panel Blink Codes

    TiVo Central > Settings & Messages > Account & System Info > Tuning Adapter > Tuning Adapter Diagnostics

    From the TiVo Tuning Adapter Diagnostics Menu the following value messages should read as follows, if the Tuning Adapter is communicating properly.

    • Status Summary > INITIALIZATION: Status: Ready
    • POST and Boot Results > BOOT STATUS UNcfg: Ready
    • RF Statistics > DAVIC: Connected, Status: Locked
    Other values you may see when the Tuning Adapter is not communicating properly are below under DAVIC

    Current FDC - Current Forward Data Channel information:

    Freq is the frequency to which the QPSK receiver is tuned.

    DAVIC is current DAVIC connection status. Generally, under normal operation, the status should be "Connected" in a two-way environment or "Ready - B'cast Only" in a one-way environment. Most of the other states are so short that they are not visible in the diagnostic screens without refreshing frequently. Possible values are:

    Red indicates a common trouble status,
    Connected is the DAVIC status you want to see.
    • "Searching Chnls" indicates that the Tuning Adapter is searching for a QPSK frequency containing valid DAVIC data.
    • "Booting" indicates that the Tuning Adapter is attempting to initiate a DAVIC connection.
    • "Provisioning" indicates that the Tuning Adapter is waiting for a DAVIC provision message.
    • "Dflt Cfg" indicates that the Tuning Adapter is waiting for a DAVIC default configuration message.
    • "Slow-Boot Wait" indicates that the Tuning Adapter is waiting for the slow-boot timeout period
    • "Sign-On" indicates that the Tuning Adapter is waiting for a DAVIC sign-on message from the DNCS.
    • "Resp" indicates that the Tuning Adapter has received a sign-on request and is waiting for a randomized timeout before sending the DAVIC sign-on response to the DNCS.
    • "Completion" indicates that the Tuning Adapter has sent the sign-on response and is waiting for a DAVIC initialization complete or DAVIC ranging and power-calibration message.
    • "Calib Power" indicates that the Tuning Adapter is calibrating its QPSK transmitter's power level for optimal performance.
    • "Waiting DNCS Conn" indicates that that the Tuning Adapter has adjusted its power, received the initialization completion message and is now waiting for the DNCS to send a DAVIC connect message to establish the default DNCS connection.
    • "DNCS Conf" indicates that the Tuning Adapter received the DAVIC connect message from the DNCS, responded with a DAVIC connect response message and is waiting for the DNCS to send a connect confirm message.
    • "Conn Confirm" indicates that the Tuning Adapter received a DAVIC connect message for a connection established by an active session, has sent a DAVIC connect response message and is waiting for a DAVIC connect confirm message to acknowledge that the session's connection is ready to use.
    • "Connected" indicates that a connection exists (the usual state in a two-way environment)
    • "Data Lock Lost" indicates that the Tuning Adapter has stopped receiving valid data and will need to re-establish a DAVIC connection when it finds valid data again. May require a reboot.
    • "Ready - B'cast Only" indicates that the Tuning Adapter failed to sign-on and is operating in one-way mode. A background timer will continue to try to sign-on periodically.
    • "Unauthorized" indicates that the Tuning Adapter is not authorized to sign-on with the DNCS.
    • "Unknown" indicates an unknown state (this should never be seen).

    Status is "Locked" if the receiver is locked onto a frequency with valid QPSK data, or "Unlocked" if not.
    • Level is the approximate received signal level. If the value displayed is between -10dBmV and 10dBmV, the level is acceptable, closest to 0dBmV is optimal. If the value displayed is less than -10dBmV, or greater than 10dBmV the level is unacceptably too low or too high.
    • Seconds is the number of seconds that the frequency has been locked.
    • Corr Bytes is the number of bytes received in error that have been successfully corrected by the forward error correction (FEC) code.
    • Uncor Blks is the number of data blocks received in error that were unable to be corrected by the forward error correction (FEC) code.
    • S/N (Signal to Noise) should be greater than 30dB, 40dB would be optimal.

    The most important items in the Tuning Adapter Diagnostics should all read:

    Status Summary
    Status: Ready (Ready - B'cast Only is not correct)

    POST and Boot Results
    UNcfg: Ready

    RF Statistics
    DAVIC: Connected
    Status: Locked

    PowerKEY Information
    EMMs: (should not be zero)

    Authorized: Yes
    Service Gp: (value)
    RF Ip Addr: (Should list an address like
    Status: Ready

    Understanding the Cisco STA1520 Tuning Adapter Diagnostic Screens

    Staging the Cisco STA1520 Tuning Adapter

    Tuning Adapter Reset:
    1. Unplug the USB of the TA to the TiVo
    2. Unplug the AC to the TA (not the TiVo)
    3. Wait three minutes
    4. Plug in the Power to the TA BUT NOT the USB
    5. Wait three minutes. The TA should on it's own acquire its IP address (changes in the rate of flashing of the green led from slow to fast).
    6. Plug in the USB to the TA from the TiVo

    Cisco STA1520 Tuning Adapter

    Current Firmwares for the Cisco TA:
    FLASH: STA1.0.0_1520_LR_F.1402 (added 6 Tuner capability, FCC Mandate) May 27, 2011
    and Image File Version:

    FLASH: STA1.0.0_1520_LR_F.1501 (fixes stability and rebooting issues when using 4 tuners) ~Sept, 2011
    and Image File Version:

    "Cablevision is running firmware version STA1.0.0_1520.LR_F.BDSG 1501" Cablevision is running their TAs in DSG mode and not legacy OOB mode.
    http://optimum.custhelp.com/app/answers/detail/a_id/2403/kw/Tuning Adapter

    FLASH: STA1.0.0_1520_LR_F.1601 (fixes unknown at this point) Jan 31, 2012
    and Image File Version:

    FLASH: STA1.0.0_1520_LR_F.1901 (fixes tuning request failures) ~Nov 2013

    FLASH: STA1.0.0_1520_LR_F.2001 Date: 11/19/13 (fixes tuning request failures and added 8 Tuner capability)
    and Image File Version:

    Cisco 30 Watt Set-Top Power Supply - Liteon Model# 4019611B
    Output Specifications
    Nominal Output Voltage +12 V
    Output Voltage Tolerance +/- 5 percent (11.4 to 12.6 V)
    Minimum Load Current 0 A
    Maximum load Current 2.5 A
    Output Power Max Load 30 Watts
    Peak Load Current 2.5 A

    Attached Files:

    Last edited: Nov 9, 2015
  2. Loach

    Loach New Member

    Jan 11, 2013
    Got anything similar for Cox Motorola TA's?
  3. CoxInPHX

    CoxInPHX COX Communications

    Jan 14, 2011
    I've got nothing for Motorola, Sorry
  4. Loach

    Loach New Member

    Jan 11, 2013
    Figured it was unlikely. FWIW, you sure did a nice job with this Cisco post.
  5. swong_88

    swong_88 New Member

    Aug 12, 2014
    Hello all,

    I just purchased my first Tivo last month. My current setup is going through Charter Communications with the following specs:

    1 Tivo Roamio Plus
    2 Tivo Minis going through on board Moca

    Cisco Cable Card Version: OS Version PKEY1.5.3_F.p.1101
    Cisco STA1520 Tuning Adapter Version: STA1.0.0_1520_LR_F.1601

    The issue I am having is that sometimes the tuning adapter will not tune those nasty SDV channels. It will sometimes work and then sometimes it will not work. I currently do not have a splitter so the input of the Tivo Roamio is the RF output of the Tuning Adapter. Reading thread through the local thread on Cisco Tuning Adpaters, it suggests that the Moca signal is screwing up the tuning adapter and I should install a POE filter before the tuning adapter will help. I have already installed a POE filter outside on my house. It is connected on the main cable coming in from the street before it splits inside a box installed by Charter. Do I still need to buy another one to put before the Tuning Adapter??

    Will the splitter help my situation as well?? I know that is not a Charter issue since those SDV channels do work if properly tuned.. I still have a Charter DVR box which can see all channels. If i use that to tune the SDV channel that i want, the Tivo will immediately see it.. Otherwise I see that message saying that the channel is not available, please press Select to tune again..

    Any help would be greatly appreciated.. thanks in advance..:up:
  6. nooneuknow

    nooneuknow TiVo User Since 2007

    Feb 5, 2011
    Read my current signature. If you have any questions, feel free to ask.

    Poe filters can be used in more places than the point-of-entry. I have yet to find anybody using the OUT port of the Cisco TAs, plus MoCA, and not having issues (well, maybe one person, who just wanted to disagree).

    Some need as many as three PoE filters here: Point-of-Entry, Cable Modem, Tuning Adapter.

    Some using amplifiers need to move the amp upstream, and use another to keep the MoCA out of the amp.

    Any device that isn't specified to be MoCA-ready/compatible, or to have a built in filter, has the potential to malfunction when exposed to MoCA frequencies, and the high MoCA signal strength. Amps are the most problematic. There is an amp (more of an equalizer) built into Cisco TAs with In & Out ports, which is why they don't play well with MoCA, requiring a splitter, filter, and not using the OUT port.
  7. swong_88

    swong_88 New Member

    Aug 12, 2014
    Thanks for the response... I will go and purchase another POE filter and splitter and see how it goes.. What kind of splitter would you recommend? I see alot of them on Amazon. is the 5Mhz to 900Mhz enough or would you recommend one of those 2Ghz guys.. Thanks for your help again...:up:
  8. nooneuknow

    nooneuknow TiVo User Since 2007

    Feb 5, 2011
    I recommend 1GHz. If you can get 1.2GHz for a little more, get that. 1000MHz=1GHz. Some splitters will say 5-1002MHz. Those are essentially 1GHz splitters trying to stand-out as better. Make sure it says "digital" somewhere on the splitter itself (not just the box it is in).

    Do not get higher than 1.2GHz. Do not pay extra for something that says "MoCA-enabled" or "MoCA-enhanced", etc. It's the same deal as with HDMI cables that cost more, for the brand and enhancements that are BS.

    One real problem is: I can't buy any splitters that work well for me, from retail stores, no matter what they cost. I either have to get one from a cableco van, the local Cox store, or mail-order them. Nothing Wal-mart, or the likes-of is worth the packaging it's in. Home Depot might have some good ones, if you are lucky.
  9. swong_88

    swong_88 New Member

    Aug 12, 2014
    Thanks for the quick reply... Currently, my Cisco tuning adapter has:

    Firmware: STA1.0.0_1520_LR_F.1601

    If I could magically force Charter Cable to upgrade to:


    As suggested original poster, would that help things?? The first post did say that 1901 code fixed some kind of tuning issues... Well, I have purchased another POE filter and splitter... I will try them out and see how it goes.. Thanks again for your help..

  10. nooneuknow

    nooneuknow TiVo User Since 2007

    Feb 5, 2011
    No software/firmware is ever going to change the fact that Cisco TAs have an equalizing amplifier inside, which are incompatible with MoCA, thus requiring using the splitter and filter, or not using MoCA.

    MoCA-friendly amps exist, but they work by NOT amplifying the MoCA, and just letting it pass as-is. That's not the kind inside the TAs, so that's why firmware can't help it, even if the firmware turned the amp off.
  11. swong_88

    swong_88 New Member

    Aug 12, 2014
    That makes sense.. Let me ask another question.. I have to say that I am not all that familiar with the way a MoCA network works at all... I have read things that say it resides in the 1.5Ghz range in the spectrum.. The POE filter is there in front of the house to present the MoCA signal from existing your house...

    Now with the splitter setup, as far as my understanding goes, the splitter will only allow frequencies 5Mhz -> 1GHz through.. I think it will filter out the rest.. My question is that who generates the MoCA signal through the Coax at 1.5Ghz?? I believe it should be the Tivo Roamio that is doing it or is it the router.. Maybe I am wrong here. But if it is the Roamio with the splitter in front, how will the MoCA spread throughout the house?? Won't the splitter filter out the MoCA signal from the Roamio??

    Should I be getting one of those 2Ghz splitters instead? From the prices now, the 2Ghz 2 way splitters don't cost that much more than the 1Ghz 2 way splitters. If the cost difference is not high, should I just get the 2Ghz one instead?

    Thanks again for your help... :up:
  12. tarheelblue32

    tarheelblue32 New Member

    Jan 12, 2014

    There was recently a long discussion on MoCA splitters you can find here:


    But the short answer is that 1Ghz splitters do not block frequencies over 1Ghz the way that a POE filter is designed to do. MoCA was designed to work with the 1Ghz splitters that were already in place, and using a high-frequency splitter designed to work with satellite signals is unnecessary, and may have potential drawbacks. There are also 1.2Ghz "MoCA enabled" splitters that you can get, but they probably provide more marketing hype than any actual benefits for MoCA.
  13. swong_88

    swong_88 New Member

    Aug 12, 2014
    Yeah, I just finished reading that other thread. Who knew that something as simple as a splitter could make things so complicated.. :) Thanks for the suggestion... I ended up buying that MCR one that was linked. Says it will pass 5Mhz -> 1.2Ghz. Crossing my fingers that things will work out..
  14. franklin_p

    franklin_p New Member

    Aug 17, 2014
    I am getting a CC and TA installed on 8/27 for a Tivo Roamio Plus.

    I have an ethernet line in the room wired from my cable modem.

    In this case is this how everything should be connected?

    Cable coax into TA and out of TA into Tivo.
    USB from TA to Tivo
    Ethernet (Internet) into Tivo.

    Not sure exactly what Moca is.
  15. nooneuknow

    nooneuknow TiVo User Since 2007

    Feb 5, 2011
    Simply put, MoCA is just a networking method that uses high frequency, high power, signals to use your coax for networking (requiring less use of ethernet cables).

    Even if you don't use it, your Roamio Plus has it.

    As my current signature spells-out, it is often best to eliminate use of the OUT port of the TA, and just split the coax with one leg to the TA-IN, and the other leg to the TiVo. All the required communication between TiVo and TA is done via USB cable. Use of the TA-OUT port is not required, will not cause loss of anything, if not used, and often causes problems, if used.

    Even if you didn't have a MoCA-enabled TiVo, or just didn't use MoCA, I still advise not using the TA-OUT for the TiVo connection (just don't use it for connecting anything).

    If you have & use MoCA, and your TA has a coax OUT port, it's often important to have two MoCA PoE filters. One goes at the actual point of entry to the house. The other goes on the leg of the splitter that goes to the TA-IN port, to keep MoCA frequencies out of it. If your TA is a Cisco model, the internal amp does not have a built-in filter, and the MoCA signals can do one of two things, often both:

    1. The Cisco TA may malfunction, due to it not being equipped to "deal with" MoCA.
    2. Your MoCA may not work, or will work very poorly, as the internal amp of the TA will hinder the MoCA from getting through.

    MoCA PoE filters can be placed on any device that malfunctions when MoCA is in use. This includes: tuning adapters, cable modems, EMTAs / internet telephone adapters, signal amplifiers, and more. Anything that doesn't have a built in MoCA adapter (to be part of MoCA network), or doesn't have a built in filter (the devices that do have the filters make sure to state they do).
  16. swong_88

    swong_88 New Member

    Aug 12, 2014
    So all of the POE filters and splitters finally came in the mail. I have set everything up as you described. I have a splitter so that one output will go to the input of the Tuning Adapter while the output goes to the Tivo Roamio Plus. The splitter I bought was one that was recommended in MoCA Networking/Splitter TivoCommunity thread:


    You had mentioned it would work but not to expect miracles. :) I have a POE filter between the splitter output and the input to the Tuning Adapter.

    It seems like it is better as most of the SDV that were not tuning before are but there are still a few channels that will not tune. There is 1 random HBO, 1 random Cinemax and at least 1 random Showtime. If I went to the one Cable box in the house and tuned that channel, then the Tivo would suddenly pick up the channel. It still feels like either the request from the Tuning Adapter to the outlet in the street is not working or the request from the Tivo to Tuning Adapter is not working. Not sure which.. Any suggestions on what else it could be?? Could it be that Tuning Adapter tuning issue that was suppose to be solved with the new firmware?? Any help would be greatly appreciated...:up:
  17. nooneuknow

    nooneuknow TiVo User Since 2007

    Feb 5, 2011
    It sounds like a call to your cable provider is in order. Have them check your signals, and write them down, then post them here. You can read some of your signals on your own. It's just more thorough for them to read all of them, and they'll be quick to notice anything out of range. TiVo has it's own range, which is more finicky than their box's ranges of "proper operating" ranges. This can result in the behavior you describe. Once you have the readings they give you, if I see anything missing, I'll tell you what signals to check on your own, and where.

    Most decent providers will do a truck roll, if your signal is out of range bad enough, without a charge, especially if you have any leased/price-included box of theirs in your home. They generally start at the pole/box that leads to your home, and analyze the signal, working towards the house. If they have to come inside, make sure that they will not charge you, before letting them in. They can't charge for any problems found outside the home, or that they can fix from outside the home. Once they have to come inside (if they do), most still don't charge. I just prefer to be thorough. If they see bad values, on their own box, on their TA, or on your cable modem, or some combination of these, you might be able to get it resolved by them, at no charge.

    Who knows ... you might have a signal issue, that will never be detected and corrected, unless you make the call.
  18. swong_88

    swong_88 New Member

    Aug 12, 2014
    Thank you very much for the advice.. Are there some numbers from the Tuning Adapter diagnostics or the Cable Card diagnostics that I can read off?? I have not had the time to call my cable company to have them come out and read the signal levels going to my house.. They are also very iffy about these service calls. They tried to charge me $45.00 for coming out the last time. Had to argue with their customer rep guys after wards when the charge suddenly showed up on my bill. The guy who came did not even tell me that he would charge me but I guess it was partly my fault for not specifically asking.. :cool:
  19. CoxInPHX

    CoxInPHX COX Communications

    Jan 14, 2011
    TiVo Central > Settings & Messages > Account & System Info > Tuning Adapter > Tuning Adapter Diagnostics > RF Statistics

    Current FDC - values

    Currrent QAM - values - This value is only one of the Tuners, you would need to change channels on the TiVo until this value changes.

    Current RDC -values
  20. swong_88

    swong_88 New Member

    Aug 12, 2014
    Thank you very much.. I will look when I go home tonight to see what values are present. Should I try to tune to those nasty SDV channels and compare them to the non SDV channels?? If seems like if someone in the neighborhood is tuning that channel, the Roamio Plus can see it fine.. It is when no one is tuning that channel, that is when the issue occurs.. To record my kid's morning cartoons on the Hub network, I have to go and tune that channel on my one Charter Cable box before the Roamio Plus can see it and record it...

    On a side note, I could not help but notice that your signature says that you have Roamio Pro + XL4 Premiere.. I was thinking of doing this as well. Can the Roamio Pro see the shows recorded by the XL4 premiere and vice versa? The minis can just tune to the DVR that you want but I was not sure if the Roamio Pro or XL4 could also do that or not. Thanks again for the help...:up:

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