Canare RJC5ES-4P-BS

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This topic contains 2 replies, has 3 voices, and was last updated by Profile photo of ahjeff ahjeff 11 years, 2 months ago.

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  • #22321
    Profile photo of teknik99
    teknik99
    Participant

    Hi,

    I was wondering if anyone has used this Cat5E cable or not.

    Its twisted pair with a braided shield basically the same construction as their star-quad microphone cable but with the 4 individual twisted pairs.

    Someone mentioned that braded shields are actually Cat6 ad will not transmit audio. Canare insist this cable is Cat5E.

    I’m no expert but seeing the Klotz RC5 and Etherflex are both stranded with braid shields it should be fine.

    Any feedback appreciated.

    #25488
    Profile photo of Mr-B
    Mr-B
    Participant

    If the manufacturer states the cable complies with the standard laid down for CAT5E then it should be suitable, there is some difference in the length of cable that can be used but in my understanding as long as it is less than 100m for Ethersound and LAN use it should be fine. I know some cables will be OK with up to 120m on ACE but they should be tested first just for peace of mind. Certainly Canare is a reputable manufacturer.

    #25490
    Profile photo of ahjeff
    ahjeff
    Moderator

    Hi teknik99

    Mr B is right that the Ethernet standard is 100m, but this figure is based on a maximum allowable bit error rate (BER). Any Cat5 compliant cable will work at 100 meters, but to pass the standard, it is allowed to introduce some bit errors, which correspond to packet errors and lost information in the data stream. For most Ethernet applications, this is acceptable, because the TCP/IP protocol that most services use will detect the error and resend the data.
    In the audio world, there is no time to resend the data – if a sample is lost, by the time the system has realised, it’s already time to play the next sample. So in this case, the Cat5 standard BER would result in interruptions in the audio. This is why people like EtherSound and now us at A&H individually test specific cables to make sure that they work at the specified length with zero errors (in our case even during 1kV mains line spikes).
    It is then very difficult to predict in advance what length of a particular cable will work without errors, without actually testing that cable. We now have 5 recommended cables, so although I’m not saying that the Canare cable will not work, the safer bet is to use one of those.

    Cheers

    – Jeff

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