Twisted Pair Range: Comparing STP, UTP, FTP - Standard Distances & Differences

Hello.
I can not find, and I am curious - what is the range of the twisted pairs:
standard, UTP - 100 meters
STP -?
FTP -?

I have already searched on wikipedia, google - I can't find these distances anywhere :)

Greetings

STP - if I remember correctly 50 m

Regards
Joseph

One more question - why gel in a twisted pair?

And what is the 'range' of this FTP twisted pair?

STP - surely so weak? This is a shielded twisted pair - better than UTP.

edit: I found information that, however, 250 meters - http://sieci.res.pl/skretka1b.htm

maras2003 wrote:

One more question - why gel in a twisted pair?

Cables to be routed outside buildings are gelled in order to prevent moisture from entering them. You can even bury such a cable in the ground, drag it, for example, to another building. They have better weather resistance.

STP and FTP also after 100m.
250m must be a mistake, the Ethernet standard specifies exactly 100m of Cat 5e twisted pair, regardless of whether it is shielded or not.

Recently, WSiP conducted (or offered to conduct) a mock exam in the profession of an IT technician, and gave ready sets of questions and tasks.

One of them is just about the STP twisted pair:
The STP shielded twisted pair can send the signal without amplification over the maximum distance:
100/150/250/300 meters

- correct answer 250 meters.

Mainly hence my question, but I am also curious if I can organize a better Internet connection than Netia And curiosity about the 'range' of other twisted pairs

I consider both your question and this WSiP (as long as you quote it exactly) imprecise. What "signal" should be referred to with max. segment length? If, for example, for the transmission of Morse code at a rate of 1 c / s, then I give 5000 m on the spot

salmon wrote:

I consider both your question and this WSiP (as long as you quote it exactly) imprecise. What "signal" should be referred to with max. segment length? If, for example, for the transmission of Morse code at a rate of 1 c / s, then I give 5000 m on the spot

ZTCP is about the length of the Ethernet frame - if the cable is too long, the frame will miss its place and the transmission fails.

Added after 1 [minutes]:

maras2003 wrote:

Mainly hence my question, but I am also curious if I can organize a better Internet connection than Netia And curiosity about the 'range' of other twisted pairs

Have you thought about the "light"? The range is several times greater, but I do not know what the price is.

Okay, so my question is about the computer network (data transfer, internet and that stuff )
and WSiP do not know what it was about - they did not include it in the question Consequently, could this question be considered invalid?
Other flowers also happened, e.g. the answer to the question "Any program for worms", except WSiP requires that you know all ranges, all types of variables in all programming languages, including signs (by heart), and the Regulations of the Minister of Labor and Social Policy of 1.12 .1998 :)


As for the light - I do not know how the prices are - neither the cable nor the devices Distance from the local provider's "headquarters", approx. 150-200 meters.

Optic fiber is very affordable, so you will get 100-200 m at a very affordable price. As for the twisted pair, shielded / unshielded or gel, the distance it works depends on what we want to achieve. If you are satisfied with 10MbHalfduplex, it will work for 250m

What does affordable price mean?
let's assume that "PLN 5 per meter" - which gives about PLN 800 for the connection itself (read too expensive).

Actually, I haven't found out what it's like with these twisted-pair cables yet
I understand that on FTP or STP the range will be a bit bigger - but how much "a bit"?
For example, it is a 1Gb / s link - I understand that ordinary twisted pair is 100 meters, and how many FTP or STP?

Additional question - why WSiP reported that the STP runs at 250 meters (without any signal data)?

maras2003 wrote:

What does affordable price mean?
let's assume that "PLN 5 per meter" - which gives about PLN 800 for the connection itself (read too expensive).

Actually, I haven't found out what it's like with these twisted-pair cables yet
I understand that on FTP or STP the range will be a bit bigger - but how much "a bit"?
For example, it is a 1Gb / s link - I understand that ordinary twisted pair is 100 meters, and how many FTP or STP?

Additional question - why WSiP reported that the STP runs at 250 meters (without any signal data)?

100m of a single-mode fiber is about PLN 400

FTP - a twisted pair with each pair additionally foiled in a foil and mesh screen
STP - twisted pair shielded with foil and mesh

As for the range at 1Gb / s transmission of 100m no more when using STP, the copper attenuation is too high to maintain this standard at higher distances.

STP works, but on the 10MbHalfDuplex standard

maras2003 wrote:

Recently, WSiP conducted (or offered to conduct) a mock exam in the profession of an IT technician, and gave ready sets of questions and tasks.

Hello, does anyone have such a set of questions or a source from which I could download them?

So: according to the standards - the length of the transmission line does not depend on what is happening around the cable (foil screens, stranded screens or other), but on whether the cable itself is of appropriate quality and properly made of copper (twisted pairs, etc.). Screens protect against the influence of external disturbances. and should ONLY be used when you have a reason to do so !!
According to the same standard (as a reminder - the standard by Telecommunications Industry Association (TIA) and the International Organization for Standardization (ISO), for category 5e the standard ANSI / TIA // EIA-568-B.2 Commercial Building Telecommunications Standard Part 2: Balanced Twisted pair Cabling Components, 2001) the maximum length of the tarnsmission track can be 90 meters, 100 meters including patchcords. So much for the theory, because this is what we think about, the man who wrote these tests would be advised to either read the standards carefully or ... not to write the tests.
In terms of optical fiber - I would not be so afraid of this technology - both financially good (quite working media converters already at the level of PLN 60 apiece, the cable itself is just over PLN 1) and technologically - it works well and is quite simple. Net distribution prices.

Do I understand correctly?
- twisted pair, no matter what, with or without a screen - max 100 meters (theoretically, because in practice I can connect to 110m cable)
- when I put the cable next to the power cable (or HV ) is to put a shield there, because I will not connect


As for the optical fiber - what if I spend PLN 500 for only materials, labor, etc., and the company will collapse after a few months ?

1.yes
2.no, next to the electric wires, as you say for power, you shouldn't put any twisted-pair cables. The screen won't help.

As for distances, timing is the key, not damping or similar ideas.

And if you do on copper, it won't fall?
You won't even buy an average quality switch for PLN 500.

Maras, you've been on this topic for three months, so why not let us know what you think?
Do you really have to connect two devices at a distance of more than 100m (because that's what the standard specifies) or you just philosophize and the whole thing is a story about a bitch.
You can try to pull longer distances (my record is one hundred and sixty-some meters at 10M and half-duplex) but remember that cables get old and after some time it will stop working.
You can insert a repeater (extender) along the way, but an ordinary switch is better (according to the standard, you can connect 5 pieces in this way), which theoretically gives 600 meters, remembering that each will add a few ms to the ping.
And if we are talking about kilometers, there is no need for light (regardless of whether the company collapses or not) - this has the advantage that the fiber optic cable has no speed limits - it is important what you fasten at the ends, and it guarantees that he won't be damned for 30 years.

Added after 7 [milliseconds]:

You can also play on the radio, two such sets:
http://www.dipol.com.pl/543,search-4344 + http://www.dipol.com.pl/antena_atk-16-2_4ghz_14_5_db__7_m_przewodu__wtyk_sma_r-p_A712427.htm
I mean it at a distance of 700m in a straight line.

The topic was divided
First, it was about the range of the STP twisted pair - because in the tests my class wrote, it is 250 meters according to the key. I had doubts about it, and on the Internet I did not find a specific, precise and unambiguous answer - hence this thread.

And since the author of this question in the tests believes that 250 meters - it would mean that I can use the Internet delivery service from a company that has a switchboard some 200 meters from me. I also asked about this (I'm not interested in wireless).

As you can see my doubts have been dispelled with the posts "recki-quadra" and "rwisniewski1" Maybe I was philosophizing a bit by the way, because I like to know more, and I learn quickly based on specific examples (preferably absurd )

And the topic dragged on for 3 months, because no one had given me a "specific, precise and unambiguous" answer before.

Hello,
I have a question about the twisted pair next to the power cord. What should be the distance between these two wires in the air?

The standards are not precise - it depends on what is powered by this cable, if something that does not generate any dramatic disturbances is enough a few dozen cm, if, for example, a welder or an old engine, I would oscillate around a meter and more, and here the use of a cable with a screen already makes sense!

And if this twisted pair is too close to the power cable or even entwines it - is there a possibility of damaging the network equipment?

I have never encountered such damage, but theoretically it seems to me that it is possible - with a very large amount of electrostatics, voltages of several dozen or even several hundred V can be generated and then something bad can happen, especially if high voltages travel through the traction cables. In network equipment, ports are usually somehow secured against such situations, but personally I am not convinced about the full effectiveness of such security.

As a curiosity, I can say that recently in the monitoring installation (the analogue also used a coaxial cable, which is by definition well shielded), the cable was placed together with the power cord (230V) in one metal tray (at a distance of about 30 meters) and the induction on the coax generated voltage on level of 14-16V, even when there was nothing connected on the other side of the power cord - the fitter noticed when he was earning something to "caress" it. Fortunately, connecting to a well-grounded recorder has reduced these voltages to zero, there is even no image distortion, but it gives you an idea of how ubiquitous these currents are.