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Thread: Do you like to use RJ45 connector laser?

  1. #1
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    Laser Warning Do you like to use RJ45 connector laser?

    As my view, RJ45 lan cable is more convenient for enduser to operate. It is more fast and no need more tool and material.
    We ABLE laser design RJ45 and DB25 both connector for your choice.Click image for larger version. 

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    Last edited by ablelaser01; 03-14-2014 at 01:17.

  2. #2
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    Common Gnd is obvious. But with only 7 more connections available, how are you dealing with the +/- aspects of the signalling (+x / -x for example)?
    Cheers

    Colin.

    Anyone wanting to be a politician, should automatically be excluded from being one!

  3. #3
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    Quote Originally Posted by WolfMax View Post
    Common Gnd is obvious. But with only 7 more connections available, how are you dealing with the +/- aspects of the signalling (+x / -x for example)?
    The only thing I can figure is that they are using single-ended amps and color modulation. I thought the FB3 output was differential though.

    I use two for all of the required connections. Works like a charm.

    Click image for larger version. 

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    Last edited by absolom7691; 03-15-2014 at 10:15.
    Those who fail to grasp art are the ones who criticize it.

  4. #4
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    Quote Originally Posted by absolom7691 View Post
    The only thing I can figure is that they are using single-ended amps and color modulation. I thought the FB3 output was differential though.

    I use two for all of the required connections. Works like a charm.
    But they said they use both DB25 and RJ45 which would mean the DB25 would also have to be single ended signalling if they are using single ended amps

    Differential just means at the highest +ve voltage the -ve voltage is 0. As the +ve voltage reduces, the -ve voltage increases by the same amount and vice versa. So if +24v goes down to +20v the -ve side will become -4v from 0. At +0v the -ve voltage will be -24v. These values are relative to Gnd. If you were to put a meter across the +ve and -ve pins you would see 24v constantly. This means the differential output can be used for single ended operation as you just ignore the -ve voltage lines completely.

    But DT30/40 scanner drivers have +/- inputs so, how do they get round not having enough signal lines in the RJ45?
    Cheers

    Colin.

    Anyone wanting to be a politician, should automatically be excluded from being one!

  5. #5
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    That's right. Total brain fart. I was thinking of something else.
    Those who fail to grasp art are the ones who criticize it.

  6. #6
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    I'd assume it's going to be something like this

    pair 1 wire 1 - X+
    pair 1 wire 2 - X-
    pair 2 wire 1 - Y+
    pair 2 wire 2 - Y-
    pair 3 wire 1 - R+
    pair 3 wire 2 - G+
    pair 4 wire 1 - B+
    pair 4 wire 2 - GND

    and no other signals on the RJ45 but all will be present on the DB25
    RTI Piko RGB 4 Projector
    CT6215 Scanners & CT 671 Amps; CT6210 & Medialas Microamps. GS124PD
    RGBLaser Systems 6000mW RGB Module - 638nm/445nm/532
    LD2000 Pro + QM2000.net + Beyond
    Etherdream + LSX

    Old Projector Build


  7. #7
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    the biggest problem i can see is that this is not a standard. Standards are important for a reason.

    DB25 might be slightly ham fisted, but its annoyances are worth it when you consider its universal compatibility. Until a new standard becomes established then we should stick to what we have.

  8. #8
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    But at least they are giving you the options as the DB25 is still in the projector

    RJ45 and DB25 both connector for your choice
    RTI Piko RGB 4 Projector
    CT6215 Scanners & CT 671 Amps; CT6210 & Medialas Microamps. GS124PD
    RGBLaser Systems 6000mW RGB Module - 638nm/445nm/532
    LD2000 Pro + QM2000.net + Beyond
    Etherdream + LSX

    Old Projector Build


  9. #9
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    I does work. Rob sells the ILDA > CAT5 adapters
    In science one tries to tell people, in such a way as to be understood by everyone, something that no one ever knew before. But in poetry, it's the exact opposite - Paul Dirac

  10. #10
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    doesn't that system use 2 lines of cat 5 though? so 16 conductors available, against the 8 being suggested here...

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