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1.4mm Thick Gigabit Ethernet Cable
TheIonix writes "Flat network cables aren't anything new, but I'm pretty sure ones like this are. Japanese accessory king Elecom today announced the "LD-VAPF/SV05" network cabling, coming in at 1.4mm thick." Also here's their press release if you can read Japanese.
I'm not sure if it's out yet or not, but Flatwire has talked about this at least a year ago.
Google Translation of press release.
I'm a big tall mofo.
Can't wait to see them bringing down the ceilings in old campus buildings. (We always run stuff in the plenum. :) 0 )
I'm still not sure I'm okay with the potential for interfreaence in these... it's just too thin... I'd love to see how many u can stack on top of one another before they break.
-=fshalor
If the pics are accurate, and you can really shut the window (sorry I don't read Japanese), then this is some cool stuff. I can see it being used to hide cabling and make it less obtrusive.
Other than that, they had better be selling it for close to normal cable prices, or I can't think of anyone who would buy very much of it.
"We don't know what we are doing, but we are doing it very carefully,..." Wherry, R.J. Personnel Psychology (1995)
But surely a large file will not fit through such a small cable? You'd need to hammer them down first, which is an unwanted chore. Easier than making them small enough to transmit wirelessly, I guess.
Babelfish translation...
I guess I don't understand what's the point in this article other than "informational". We have optical fiber cable in my office, it can't be any thicker than about 2 mm's.
I really appreciate the fact that people are generating new technologies, to make things thinner, however, this is where stuff should be going, not groundbreaking news.
... is not thickness, it's the cable ITSELF I think... I'd rather see some important research on WIFI than this kind of invention...
Im guessing they took that into consideration and have developed it to withstand physical damage and such. From the looks of it, it can be closed in a door and have no damage, and walked on with no damage. Hopefully you are wrong and they got this right so I can finally run cable from room to room and be able to close my door.
I have worse karma than M$.
the whole point of making such announcement would be that you would have solved that shielding problem.
the real novelty of this thing(if you watch the pics) is that you can run it through thin places(like windowstills.. no need to bore a hole to the wall).
world was created 5 seconds before this post as it is.
I'm not sure if I would want to run my ethernet cable though a window like they have pictured. And like someone said before, does it have good protection of the data going though the cable? Because it would be pointless to run this cable if its easy to cause data loss. If they little to no data loss, and a good price, I might want to use it instead of some regular size wires.
-----BEGIN PGP SIGNATURE-----
12345
-----END PGP SIGNATURE-----
"We are disrespectful to cable of girth. Can you see that we are serious? Join me or die. Can you do any less? For special lucky data, use Elecom LD-VAPF/SV05 network cabling."
I want to drag this out as long as possible. Bring me my protractor.
The problem with with reading Engadget, Gizmodo, IDFuel, BoingBoing and Slashdot is that sometimes one story will just start on one and eventually be posted to all of them...
The U in UTP is Unshielded. Standard Ethernet doesn't use shielding. But it does use the twists in the cabling to combat interference.
It looks like this flat cable is only for very small sections, for which you can probably get away without the twists if you've got another way to handle the interference.
500GB of disk, 5TB of transfer, $5.95/mo
OK first off what is an Ethernet cable? You can not buy one at a store. You can buy a CAT5, CAT5E, CAT6...cable at nay computer store.n /0,,sid7_gci213234,00.html/
Second twisted pair UTP)is not shielded. http://searchnetworking.techtarget.com/sDefinitio
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R3
Stuff that matters: circuitbreakers, vacuum-cleaners coffee makers, calculators generators, matching salt+pepper shakers
Most ethernet cable used today is UTP... which stands for 'Unshielded Twisted Pair'. Their is no 'EM protection' built into the cable other than the arrangement of the wires to prevent crosstalk in the individual strands.
If they can provide enough 'twists' and correct pair placement then they can easily provide just as much protection as standard Cat-5/Cat-6 that we use today.
PS People should also NOT use shielded twisted pair... in most environments it actually hurts signal quality do to it's jacket effectively being a single strand of conductor to pick up stray noise from 110V, ballasts, etc...
Telcos have alot of dark fibre in the States. Most people assume that's optical fibre...but it's actually moral fibre.
How does this solve the problem of the wire becoming an antenna? The whole point of twisting the wire is to eliminate interference isn't it? An untwisted wire (actually pair) is the basic component to an antenna isn't it?
I do not read Japanese, but can imagine
1) this cable is rather expensive
2) the loses/reflections are higher than for normal cable
This is speculation, of course, but probably you don't want to make your entire home network from these cables...
I like to see wired vs. wireless networking duking it out. Wireless has increased security and range lately. But then Wired has gigabit! Who will be the winner! Stay tuned.
As far as I can se are they specifying Cat5. That almost certainly means they have a large number of twists/inch which gives a good protection against M-field induced interferance.
E-field interferance is not such a large problem as the data is transfered in differential mode and the CMRR is rather high in the equipment.
Did anyone else read the subject and think "Thick Ethernet? What do we want to bring that back for?"
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Well, if you are going to use STP you need to be using equipment designed for it. Equipment designed for STP needs to have a good ground plane and needs to bring that plane out to each port. Between the grounding of the jacket and the twisted pair STP cabling should not be worse performing that UTP, and in some environments is MUCH better. Of course in any invironment with enough RF noise to warrant STP I would just use fibre and not have to worry about the RF at all =)
There are 4 boxes to use in the defense of liberty: soap, ballot, jury, ammo. Use in that order. Starting now.
The National Electrical Code requires that wiring in a plenum has a special teflon cladding that won't burn and fill the ducts with smoke in the case of a fire. I didn't see this mentioned in the article...
Here's a link to the page translated from French to German, to include some of our European members that too often get overlooked.
The twistedness actually is there to cancel out crosstalk. There isn't really any shielding for RF (either receiving or sending). The twistedness attempts to create pairs of wires that always appear to be 90 degrees in reference to the other wire. Any PCB designer knows that to get the least interference from lines, you try to cross them at 90 degrees, so they only "overlap" at a very small point. Parallel lines act like capacitors to eachother, and that's why we get crosstalk.
-Jesse
Nothing says "unprofessional job" like wrinkles in your duct tape.
Define "normal" cable prices. I realize that "internet" pricing should be cheaper, but when I went out looking for a good place to buy bulk cables (30+), I couldn't find a single retail place with a reasonable price.
7 ft. Cat-6, blue:
Best Buy - $17
L-Com - $8 (as low as $7 if you're buying quantity)
I have no affiliation with L-Com, and I'm sure there are others out there like this, but I try to spread the word when I have a good experience with a vendor. I ended up ordering 30 3-ft cables for just over $2 each. The price was fantastic and the service was great.
It's not just crosstalk. Twisting improves "Common Mode Rejection" because the twists cause any interference to be picked up with opposite polarity on any signalling pair.
Obviously, IANA EE.
Most of the Flat wire designs I have seen actually 'twist' the pairs within the design.
If you look at: http://www.decorp.com/product/data.htm (which was posted prior) showing another design you can actually see the pairs 'twisting' within the flat cable. Actually from the whitepapers I have read the noise on the line should be less with this type of design. I just wonder how practical it is for buisnesses to run in existing infratructure.
Their site lists the cable shown in the window picture at 2,520 yen, or $24 USD. That's a bit much for such a short piece of cable. Maybe the price will go down in the future, or maybe they are the Japanese version of Monster Cable (a huge rip-off)
http://www.thelung.org
Cool. Thanks.
I might know what I'm talkin' about, but then again, this is Slashdot...
I believe that you are referring, by "standard Ethernet cabling", to RG-58, or to the garden hose that was used for 10base5 ethernet.
The problem I've had with online-cable sites is that inevitably shipping plays a big part in the price (L-com will sell you 4 7ft cat5e cables for $3.29 each, plus approx $2.00 shipping EACH). But the shipping cost is also highly variable, eg. some sites include more of the product cost in the shipping cost, others less. So, if you want to buy 3 cables, you should get it from one place, and if you want 10 cables, you should buy from an entirely different place. I wish there was a meta-website that did all these calculations for you...
I am not a network cabling specialist, but at least here in Germany ist quite difficult to find pure UTP cabling. The standard seems to be FTP (Foiled Twisted Pair) which has a metal foil underneath the outer coat. There's a thin bare wire which connects to the shielding inside each jack. The jacks themselves have additional contacts which connect to matching metal contacts on the sides of the plugs.
Cheers, Fogger
Um... I didn't do it!
Home Depot, Lowes, sometimes places like Sam's Club, BJ's, Costco. Most DIY type places. Any decent internet hardware store. Sounds like you're not ordering bulk cable anyway, but pre-crimped cable. 1000' for around 70$ for cat5e. Price goes up/down depending on if you need plenum, cat5 or cat 6, etc.
So basically, you paid 60$ for 90' of wire, a markup of around 1000%, or closer to 500% after you buy a whole mess of RJ-45 connectors. Of course, then you don't have 3' cables, you have whatever you need.
sheeshs terid=228354/search=cat5%20blue%20snagless
7ft 350MHz CAT5e Patch Cable 4PR Molded Snagless Blue
http://www.pricegrabber.com/search_getprod.php/ma
Price range: $1.36 - $11.99 from 19 Sellers
every day http://en.wikipedia.org/wiki/Special:Random
I use fiber optic gigabit. Its far thiner then the stuff they're talking about.
"Have you ever thought about just turning off the TV, sitting down with your kids, and hitting them?"
Shows what you know! Ive designed several PC boards and I have no clue about that.
Religion is a gateway psychosis. -- Dave Foley
yeah.. pricegrabber.
as you window shop, click "add to shopping cart"
on individual item pages.
when you are done, they'll show you total cost ordering from multiple merchants, and total cost ordering all from the same merchant (if possible)
ONLY shortcomming, is that is always assumes a ship quantity of one per item on list- but it's still very close to your desire.
every day http://en.wikipedia.org/wiki/Special:Random
The cables are supposedly "reinforced" with Aluminum. It's possible that this means that there is a thin layer of aluminum sandwiching the wiring, or backing the insulation. This would effectively shield the cables from outside interference, if this is a concern.
As for crosstalk, though I could most certainly be wrong here, if no two adjacent wires carry a single, the other wires will effectively diminish crosstalk (think about 80-pin ATA-66/100/133 cables.)
I'm no expert on RF, but I'd suspect that either mechanism alone could do the trick.
If you use Eagle, and use the auto-router for the traces, it is configured by default to attempt to do that for you. In the auto-router config, there is a drop-down that has the options "/ - \ | *" (there may be more, I forget) that give the preferred orientation of the traces. Usually the top board is - and the bottom board is |, hopefully resulting in nice 90 degree crossing lines.
-Jesse
Nothing says "unprofessional job" like wrinkles in your duct tape.
of a reason why you wouldn't be able to use shielded cable with Ethernet, can you?
+++ATH0
I'm still not sure I'm okay with the potential for interfreaence in these... it's just too thin... I'd love to see how many u can stack on top of one another before they break.
As long as the cable is still composed of twisted pairs (which they must be to be considered category 5), interference shouldn't be an issue. This is why cat5 is not shielded.
I'm in the category cable industry and would be weary of using this cable for Gigabit Ethernet. The release only mentions that the cable is rated at Cat 5 (Not Cat 5e) which means it is only good for speeds up to 100 Mb/s. You need a true (verified) Cat 5e cable to run 1000 Mb/s (Gigabit) ethernet.
That said, this would be find for most home networks.
The only real excuse for not making your own cables is not knowing the 568A/568B wiring patterns. And now I offer you a solution for that... http://www.cafepress.com/568a568b
No, the twisted wires aren't twisted to cut capacitance between those two wires. It's the crosstalk between parallel channels that you want to cut down on. The twisted pair itself is basically a poor-man's transmission line, with characteristic impedance of 93 Ohm or thereabouts, depending on the twist pitch. Each twisted pair contains signal and ground (ie, it's return), and ideally should have zero net current flow within the pair (like coax). Ie, the current flow in the pair goes 'there and back again' for the signal/ground. By twisting them you effectively couple them together better, so they're less likely to crosstalk to the other pairs, either through capacitive or mutual inductuve coupling.
While there is definitely capacitance between the two twister pair lines, there is a roughly constant mutual inductance that lets it approximate a tramsission line w/ real impedance (ie, no filtering to first order). This is how typical 50-Ohm and 75-Ohm Coax cable works too, but they're better shielded and have a better-defined characteristic impedance. (Ie, you can form a TEM wave in coax, but not so well in twisted pair).
So by twisting you are forming a more-isolated transmission line channel, which will reduce crosstalk between the other twisted pairs, not between the two wires in the pair, as they are ultimately tied together.
Just like an EE to not know a joke when he see's one :)
Religion is a gateway psychosis. -- Dave Foley
Two conductors of small cross-section in intimate proximity carrying equal currents in opposite directions make a very poor antenna.
..... the whole of engineering is really just about finding the best compromises between incompatible "ideal" requirements to produce a solution that will work under real-world conditions.}
Small cross-section isn't a problem. Opposite directions are easy to arrange: all you need is a resistor on the far end, bigger than the resistance of the cable {which depends on the cross-section; more area == less resistance}. Equal currents require differential drive arrangements {one goes high while other goes low -- think motor reversing circuit -- not hard} and that the terminating resistor on the far end is smaller than the input resistance of the receiver. {Spot the conflicting requirements here
Intimate proximity is traditionally ensured by twisting the wires together, but bonding them side-by-side in a flat configuration works almost as well, if you can live with the fact that there is actually going to be some directional antenna functionality, but it's very directional.
Twisting helps to cancel this out somewhat, by ensuring that any radiated fields tend to cancel one another out: somewhere further along the cable, a signal will be emitted with the opposite phase; and if the twists are close enough that the conductor is in intimate proximity to its opposite counterpart, the two will cancel out.
Exactly how close is "intimate" depends on the wavelength, of course.
Je fume. Tu fumes. Nous fûmes!
Making 35 3-foot cables sucks. I made my own cables to run from the office to the bay (about 70 ft each), but I wasn't interested in the hassle of crimping 2-3 foot pieces.
Ohhh, you're begin in Japan.. tonight! Big in Japan!
In need of reliable and affordable server monitoring?
I want to know if I can run power over ethernet using this new cable. We do Fixed Wireless installations a lot, and right now we have to drill into the house, or find some other sneaky way of getting inside. It would be nice if we could use this stuff for a short hop through a window and then get outdoor-rated cable for the rest of the run.
You create your own reality - Leave mine to me.
It's how you use it.
It's all about the fire in the wire.
The unwanted signal (noise from interference for example) would be common on both conductors of a pair, so not opposite polarity, but yes you have the right idea.
already exists as coaxial cable. at least here in germany you get that at your every major home-depot-clone.
What i'm looking for (without any success yet, that is) is highly flexible ethernet cable, braided wires, stp, cat5 for 100Mbit, as carry-with-me cable for networking to be plugged between my laptop and "the wall".
Personally, i don't like the standard patch cables, because they are so awfully stark/tenacious.
what i'm looking for should be more like microphone cable.
Any ideas out there?
(oh, yes, i am able to put on the RJ45s myself.)
hic porci cocti ambulant
From the press release:
10m - 3,600 yen
20m - 6,000 yen
30m - 8,400 yen
100m - 24,000 yen
Window Kit - 2,400 yen
So, if you buy in bulk (100m) - it comes down to around $.70 per foot.
Not cheap, but for the niche application, not obscenely expensive.
I think the people above me are having sex - or they're sleeping restlessly and agreeing with each other a lot.
OK first off what is an Ethernet cable? You can not buy one at a store.
A google search for "ethernet cable" finds 682,000 pages that disagree with you.
By your argument, I guess you can't buy a car either... you can only buy a Honda Civic EX 1.5 5-sp Manual, Toyota Corolla CE 4-sp Auto etc.
You're right on need a good grouding plane, but there are cases where UTP will perform better than STP. The shielding will create a capacitive coupling with the signal. As the frequency goes up, you will lose more and more of your signal. So 10 Mbps will perform better over STP, but gigabit, especially on a long run, probably won't perform very well if at all over STP.
If I drive fast enough at the red light, it'll appear green.
What I want is a thin DVI cable with a detactable connector. My stinkin' contractor put a conduit in for me, but it's 1" in diameter and has a 90 degree bend. :(
How much does it cost my boss to have me sitting here crimping cables vs. sending a PO?
Sure, if I need one or two, it's no big deal. But what if I need 200?
And to whom should I be making my excuse? Is there some Authority who decides what is and is not worth my time? If it's you, please give me your contact information so I can decide whether I should bring my lunch to work tomorrow or not.
Why yes, I AM a rocket scientist!
is even thinner...
Timo's Audio Software http://www.esseraudio.com
I think the parent meant that UTP cable is not limited to Ethernet use. Like there's no such thing as a Windows PC because the machine can run other operating systems as well.
On the other hand, there are people who would just want to buy Windows PCs and Ethernet cables and not worry about the technical details.
Escher was the first MC and Giger invented the HR department.
Really? What is "ethernet cable"?
A cable used for Ethernet.
You can run Ethernet over Cat5, Cat5e, Cat6, coax (10Base2, 10Base5), single-mode/multi-mode fiber, and probably lots of other media types.
And your point concerning the statement "Most ethernet cable used today is UTP." is what exactly?
I just see too many people talking about "ethernet cable" when there is no such thing.
Sure there is. As you say yourself, it comes in a lot of different varieties, and, as the grandparent poster said, the most commonly used ones are UTP.
The illegal we do immediately. The unconstitutional takes a little longer.
--Henry Kissinger
You are so wrong it's not funny. Doesn't anyone take basic electrodynamics anymore? A cable is a transmission line. Assuming the characteristic impedance is properly matched, as it should be for any high-speed application (i.e. not audio), the speed of the signal and the frequency response have nothing to do with the capacitance per unit length. The speed is typically around 0.7 the speed of light regardless of the capacitance per unit length. An ideal (theoretical) transmission line has a perfectly flat frequency response regardless of the capacitance per unit length. High-frequency losses are mainly due to skin effect, which has to do mainly with the resistance and thickness of the metal. Skin effect has nothing to do with capacitance per unit length.
The National Electrical Code requires that wiring in a plenum has a special teflon cladding that won't burn
PVC itself is fairly fire retardant, but it releases Hydrogen Chloride when heat is applied to it. Plenum rated cable burns, but it doesn't release HCl when it does so, and thus is required to be used in environments where air will be circulated.
We simply don't have the bandwith right now to do everything over wireless. The only way we're ever likely the have the bandwidth we need is to keep moving into even higher frequency ranges.
Unfortunately as the frequency goes up the signal is less likely to bend around obstaces and work well indoors.
Plus new wire research can have implications for long distance carriers and short connections inside your computer, since those things cant really go wireless either.
The better analogy would be transportation. There are multiple types of transportation, but no transportation car.
My sigs offend the max # of people all over the world, regardless of race, religion, color, sex or creed. It's a gift.
12" PowerBooks have a mini DVI port that is roughly 1/2" wide and come packaged with a mini DVI -> DVI dongle. I don't know if this is a standard connector or not, but it would certainly be worth looking into if you need to cram DVI cable into such a tight conduit.
The submitter's comment seemed familiar to me. Gizmodo posted this yesterday:
h ick-gigabit-ethernet-cable-035823.php
"Flat network cables aren't anything new, but I'm pretty sure ones like this are. Japanese accessory king Elecom today announced the "LD-VAPF/SV05" network cabling, coming in at 1.4mm thick."
http://www.gizmodo.com/gadgets/peripherals/14mm-t
Since most Gizmodo entries aren't copied to Slashdot, I'm assuming it's not the same person. Maybe I'm wrong, and if I'm not, it's not that big a deal... but is it so hard to write your own copy? There's no excuse for stealing prose from another site.
I suspect the metal shielding is there because of this more than for protection
Why? because that's the level of abstraction that's most convenient to your argument?
With differential signals, as the signals that travel over Cat-5 are, you want twisted pairs, not flat cable. The coupling between the wires of a twisted pair is what helps to reject interference. You can buy ribbon where the twisted pairs are side-by-side instead of in a round configuration, but I don't know if they make this ribbon with the characteristics required of cat-5 cable.
now my studio apartment will be ~49.6mm bigger!!
sweeet
this sig has been discontinued.
Just in case you are wondering where you can get these cables, they should be available for pre-order from our site within 24 hours:
http://shinza.com/
Availability is expected within 3-4 weeks.
That depends, do we factor in the time you waste surfing slashdot, instead of making cables?
Get back to work.
Fix Your Own TV - RiddledTV.com Avoid the Landfill
If your time is too expensive for you to crimp 200 cables, it's probably too expensive for you to run and plug in 200 cables.
I haven't checked it out, but one poster mentioned a markup of 1000% for premade cables.
If you have a person on staff who will be installing cables (and, in most cases, going room to room, and probably installing switches, and plugging the cables into the equipment) that person should be the one to make cables up. Of course, they should also be the person who checks the "store-bought" cables to make sure they're good before installing. Or is that not cost-effective?
As far as to which Authority to make your excuse, it is you. If you feel that making cables is beneath you, or your time is too valuable, fine.
Sorry if I made you feel defensive, but I'm the type to voice my opinions, and I don't preface them with IMHO. That's just an apology in advance.
You are not the boss of me.
Why yes, I AM a rocket scientist!
Ethernet cable is a generic term referring to
all three, plus the variants. Just as car is a
generic term referring to a large class of vehicules.
Why? because that's the level of abstraction that's most convenient to your argument?
Just trying to stay within the boundaries of your own argument.
OK, how about this, a search on Google for Santa Clause produced 484,000 hits. Just because Google can find it doesn't mean it exists.
My sigs offend the max # of people all over the world, regardless of race, religion, color, sex or creed. It's a gift.
"The only real excuse for not making your own cables is not knowing the 568A/568B wiring patterns"
This statement is patently false, and that's what I was arguing against. I know the wiring patterns perfectly well, and that's not the reason I don't make cables.
I DON'T run cable when I can avoid it. I DO buy boxes o' patch cables so I don't have to make them. If you're paying 1000%, time to look for a different supplier.
Why yes, I AM a rocket scientist!
No Santa Clause?! yes, Broiler, there is a Santa Clause.
Om Mani Padme Hum
**I fail to see how you could easily run this cable in small places. Granted the cable is only 1.5mm thick, but you still have the plugs on either end to concern yourself with, unless people are going to crimp the cabling themself, which given the size of the cabling, would be quite the task for most.**
then you fail to read the article(or look at the pics).
and yes, it would mostly be crimped by the installer and custom cut, but then again it's not exactly for consumer self-done installations
world was created 5 seconds before this post as it is.
No... Teflon is not the substance you're looking for.
Teflon is used for low-capacitance ratings, not necessarily for plenum cable.
Plenum cable is expensive, though. CAT5e is about $70/1000ft. Plenum CAT5e is $170/1000ft. And if you're wondering how to tell the difference just by looking at the jacket, well, you'll see some markings on it... plenum jacketting says "CMP" or "CL2P" or "CL3P", while non-plenum jackets say "CMR" or "CL2R" or "CL3R". And if you see one that says "FMP" or the like, that's fire-alarm-rated cable (and it's probably red).
But its not twisted pairs, its 8 wires running parallel to each other, like an ATA cable. And ATA cables only work because every other one is a ground so that the transmitting lines don't interfere with each other. So, technically, this isn't CAT 5 (or 5e or 6 or anything else classified by the IEEE)
Most probably, they have reinvented faster than light communication, but they daren't claim it.
I can pee standing AND have multiple orgasms!
Simultaneously? Wait, on second thought maybe I don't want to know...
'Your brain is God.' -- Dr. Timothy Leary
FWIW: I posted in the form of a question--I didn't know or pretend to. Thanks to those who didn't smack me down but set it straight (or tried to).
Everyday's a school day!
I might know what I'm talkin' about, but then again, this is Slashdot...
If closing dors is a problem then I must assume that you live in a rental thatdoes not allow wiring to be pulled. Take a tri to your local home improvement store and look at what networking hardware is avaliable. For about US $100 I was able to pull 2 phone lines and 2 network drops to 3 bedrooms and the kitchen(8 new lines of both).
Then only special tool I required was a fishtape. I already had the utility knife, drill with 3/4" spade bit, and screwdriver.
The RJ-45 connectors that go into the wall do not require special tools to assemble. I still went to Radio Shack for patch cables. Home Depot charges 2x as much. I COULD have bought the connector tool and gone blind reciting "Orangewhite orange greenwhite blue bluewhite..." but the tool is almost US$50 for the cheep one!
Since I am only using 2 of the drops I pulled (now at least) Getting the tool to make my own patch cables is too expensive. If I get more than 3 network devices at the same time I will probably get the tool and break even vs premade cables. That would be 6 new cables of various length.
In any hoot, I'll have to upgrade way beyond my 4 port 10-base hub before that happens. The point is I'll be done, and never need to pull new cables again.
Oh, per my eletrician consultant leave about a foot of slack in the wall at each end so you can replace the ends several times when they go bad without pulling new wire.
Have fun!
Phil
Laugh, it's good for you!
I'll go out on a limb and suggest it is a cable that you can run Ethernet over. This is a broad definition, of course, but that does not make it an invalid one.
For that matter, CAT6E is no good for my friend Ernies ethernet network - the RJ45 doesn't fit his switch's AUI ports no matter how hard I push it in.
Anyone who wants to find a joke about Gay sex in there, I hear Kuro5hin are hiring moderators...
~~~~~ BigLig2? You mean there's another one of me?
A terrible argument, this is.
Ethernet does define the physical layer, but does not tie it to one specific type of cable. Ethernet was originally defined using coaxial cable, which is much different than the twisted pair you must be used to. Your parent post was referring to the fact that there are different types of cable (coax, twisted pair, even fiber) that can be used when you need an "ethernet cable".
Actually, ethernet does define the physical layer, as well. That's where the terms 10Base2 and 10Base5 come from, if I'm not mistaken.
HOW THIS STUFF FOLDS UP
thankyou, I'll be here til tuesday...
every day http://en.wikipedia.org/wiki/Special:Random
OK I did a hand translation of the entire thing, but then, no matter how hard I tried, I could not get around /.'s lameness filter, which is, ironically, lame. So, after going so far as to replace the model names with English words until I got tired of that, and still /. not allowing my post, I just stuck the translation on my blog. I apologize, and am not looking for random hits to my blog, which is itself about studying abroad in Japan.
http://studyinjapan.blogspot.com/
Nor is Ethernet limited to twisted pair, shielded or otherwise. That BNC connector on old Ethernet NICs is for co-axial cable.
I see even classic Slashdot is now pretty much unusable on dial up anymore.
Sounds like a description of single-ended, which is what you have with co-axial cable. Wouldn't it make more sense for twisted pair to be operated as differential, so as to take advantage of common mode rejection?
I see even classic Slashdot is now pretty much unusable on dial up anymore.
I *asked* a question. I'm so sorry my question added stress to your life. It must be difficult enough for you to be a complete moron.
I might know what I'm talkin' about, but then again, this is Slashdot...
Using Eagle is the sign of I don't pirate things, and need a free tool to do small PCBs with that works under Linux and isn't "PCB" which sucks. Eagle does just fine for hobby work. I don't design PCBs at work, but I am an EE.
-Jesse
Nothing says "unprofessional job" like wrinkles in your duct tape.