• Announcements

    • UnderDawg

      A Few Simple Rules   05/22/2017

      Sailing Anarchy is a very lightly moderated site. This is by design, to afford a more free atmosphere for discussion. There are plenty of sailing forums you can go to where swearing isn't allowed, confrontation is squelched and, and you can have a moderator finger-wag at you for your attitude. SA tries to avoid that and allow for more adult behavior without moderators editing your posts and whacking knuckles with rulers. We don't have a long list of published "thou shalt nots" either, and this is by design. Too many absolute rules paints us into too many corners. So check the Terms of Service - there IS language there about certain types of behavior that is not permitted. We interpret that lightly and permit a lot of latitude, but we DO reserve the right to take action when something is too extreme to tolerate (too racist, graphic, violent, misogynistic, etc.). Yes, that is subjective, but it allows us discretion. Avoiding a laundry list of rules allows for freedom; don't abuse it. However there ARE a few basic rules that will earn you a suspension, and apparently a brief refresher is in order. 1) Allegations of pedophilia - there is no tolerance for this. So if you make allegations, jokes, innuendo or suggestions about child molestation, child pornography, abuse or inappropriate behavior with minors etc. about someone on this board you will get a time out. This is pretty much automatic; this behavior can have real world effect and is not acceptable. Obviously the subject is not banned when discussion of it is apropos, e.g. talking about an item in the news for instance. But allegations or references directed at or about another poster is verboten. 2) Outing people - providing real world identifiable information about users on the forums who prefer to remain anonymous. Yes, some of us post with our real names - not a problem to use them. However many do NOT, and if you find out someone's name keep it to yourself, first or last. This also goes for other identifying information too - employer information etc. You don't need too many pieces of data to figure out who someone really is these days. Depending on severity you might get anything from a scolding to a suspension - so don't do it. I know it can be confusing sometimes for newcomers, as SA has been around almost twenty years and there are some people that throw their real names around and their current Display Name may not match the name they have out in the public. But if in doubt, you don't want to accidentally out some one so use caution, even if it's a personal friend of yours in real life. 3) Posting While Suspended - If you've earned a timeout (these are fairly rare and hard to get), please observe the suspension. If you create a new account (a "Sock Puppet") and return to the forums to post with it before your suspension is up you WILL get more time added to your original suspension and lose your Socks. This behavior may result a permanent ban, since it shows you have zero respect for the few rules we have and the moderating team that is tasked with supporting them. Check the Terms of Service you agreed to; they apply to the individual agreeing, not the account you created, so don't try to Sea Lawyer us if you get caught. Just don't do it. Those are the three that will almost certainly get you into some trouble. IF YOU SEE SOMEONE DO ONE OF THESE THINGS, please do the following: Refrain from quoting the offending text, it makes the thread cleanup a pain in the rear Press the Report button; it is by far the best way to notify Admins as we will get e-mails. Calling out for Admins in the middle of threads, sending us PM's, etc. - there is no guarantee we will get those in a timely fashion. There are multiple Moderators in multiple time zones around the world, and anyone one of us can handle the Report and all of us will be notified about it. But if you PM one Mod directly and he's off line, the problem will get dealt with much more slowly. Other behaviors that you might want to think twice before doing include: Intentionally disrupting threads and discussions repeatedly. Off topic/content free trolling in threads to disrupt dialog Stalking users around the forums with the intent to disrupt content and discussion Repeated posting of overly graphic or scatological porn content. There are plenty web sites for you to get your freak on, don't do it here. And a brief note to Newbies... No, we will not ban people or censor them for dropping F-bombs on you, using foul language, etc. so please don't report it when one of our members gives you a greeting you may find shocking. We do our best not to censor content here and playing swearword police is not in our job descriptions. Sailing Anarchy is more like a bar than a classroom, so handle it like you would meeting someone a little coarse - don't look for the teacher. Thanks.

Moonduster

Members
  • Content count

    3,368
  • Joined

  • Last visited

About Moonduster

  • Rank
    Anarchist

Contact Methods

  • Website URL
    http://
  • ICQ
    0
  1. Dude, If you're worried about the dangers of a diode failing causing the failure of an idiot light and buzzer, you need to find a new sport.
  2. Now you're arguing with yourself. To quote your post #8, emphasis added: NMEA0183 is close to, but not the same as RS422. The main differences are that the voltage ranges are different (with NMEA allowing a greater range than RS422), and NMEA also allows for single data wires (like Garmin kit) whereas RS422 always requires a signal and ground. You certainly did say that 422 has a ground. And your repeated claims that it can be the cause of ground loops implies it has a ground. It has no ground and, therefore, cannot cause ground loops. You're similarly mistaken about the meaning of NMEA0183-3.5.3, which isn't about talkers sourcing those voltage levels, it requires that listeners be tolerant of them. 422 requires ±10V, a swing of 20V, while the NMEA is looking for single-ended tolerance of 15V. It's a proper subset. NMEA0183 is exactly 422.
  3. 422 never has a signal and ground. 422 is not ground referenced. NMEA0183 is exactly 422. The NMEA0183 specification describes a hare-brained scheme for working with only one of the two data wires, but that doesn't mean it is not 422. Further, it does not allow "greater voltages ranges", to quote the NMEA0183 specification: The maximum applied voltage between signal lines "A" and "B" and between either line and ground shall be in accordance with the EIA-422 specification.
  4. I would say that it's in a junk yard for a reason.
  5. NMEA0183 is exactly 422 plus (unnecessary) opto isolation. There cannot be ground loops as there is no "ground" referencing or ground wire in a 422 connection. It is a self-referenced differential pair. It will work perfectly well with ground shifts as high as about 20V, more than enough for installation on any boat. The big problem with some NMEA0183 equipment is that the vendors (Garmin, can we talk?) only look at one half of the differential pair and reference it to ground. This eliminates all the inherent advantages of 422 including excellent noise immunity and immunity from modest ground shift. It also introduces ground loops that might be eliminated by opto isolation if they also use opto isolation. 232 is ground referenced and does suffer from introducing ground loops and from signal degradation from ground shifts.
  6. You want to maintain shield continuity through the connection. The cable you have has five cores. There are two twisted pairs and one shield. Shields come in two flavors. One flavor is a braided "tube" the surrounds the two twisted pairs. The other flavor has each twisted pair individually shielded with metal foil and a drain wire runs between the foil encapsulated shields. With the first flavor, you unbraid and twist up the braid and this becomes the fifth conductor. With the second flavor, you just use the uninsulated drain wire as the fifth conductor.
  7. The boat isn't liable for damages. Liability is an individual thing. Talk to any agent about a personal liability policy that covers event participation.
  8. It's not the wind that loads the rig, it's the keel, beam, etc. No righting moment, no load.
  9. That's an acronym, not a word - and it didn't come close to the travesty presented here. Words alone cannot begin ...
  10. The one tool that can destroy anything. The wrong tool for every job. Almost as useless as vise grips. For rust-proof safe keeping ... I recommend the bin.
  11. My fastest trip to Bermuda was with 200 others in about 2.5 hours. This video was the most pathetic bit-o-shit I've seen about sailing except for all those in which blockhead had any roll at all. If this is what passes for introspective, critical assessment of results, OTUSA has some challenges. Good grief!
  12. Check out frontpanel.com
  13. I'm thinking your analysis is full of shit. Any energy is returned as the field in the coil collapses and it pushes the magnet onward with the same energy absorbed as it approached. The energy absorbed by the resistor is negligible.