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Frequently Asked Questions

Can I use a twisted pair crossover cable to connect two 100vg hubs together?

ProCurve Networking by HP - Support - FAQs
No. Since 100vg technology uses all 8 wires "straight-through" for high speed transmission, crossover cables cannot be used. Uplink and downlink ports exist on 100vg hubs to allow the hubs to be connected using "straight-through" cables.

Is EURIDIS used only with twisted pair cable?

Nowadays, EURIDIS is the only international standard working with twisted pair cables for the remote reading of residential meters. The basic solution uses a field bus for communication. Nevertheless, because it may be difficult in some cases to install the two-wire EURIDIS cable, new AMR technologies have been designed over the last few years.

Why do I need a special Twisted Pair Cable for Computer Video Signal (VGA-XGA) transmission?

ALTINEX, Inc | Support
A standard CAT5 / CAT5e or CAT6 cable is made for computer network signal transmission where each twisted pair could be of different lengths. Using standard twisted pair cable could cause a color shift known as "skew." We recommend the Altinex No-skew Twisted Pair Cables, CB3150PV or CB5600PL, to minimize color shift (skew) on long cable runs.

Which cable Is better, Unscreened Twisted Pair (UTP) or Screened Twisted Pair (STP)?

Manufacturers of Video Switches, Routers and Extenders.
UTP cable will give the best quality video over long distances because it has less capacitance per unit length. However, STP may be a better choice in electrically noisy environments.

How do I connect two 100vg Hubs together with twisted pair cable?

ProCurve Networking by HP - Support - FAQs
To connect 100vg hubs with twisted pair cable, you must use the uplink and downlink ports on the 100vg hubs. The hub that is connected to the server is called the "root level" hub. Hubs connected to the root level hub are called the "second tier" hubs, and hubs connected to the second tier hubs are called the "third tier" hubs, etc. To connect a root level hub to a second tier hub, you connect a cable from a downlink port on the root level hub to an uplink port on the second tier hub.

Q12: What is the twisted-pair cable for Gigabit Ethernet?

faq_gigabit
Category 5 cable is preferred to be using with twisted-pair Ethernet in structured wiring environments. This will ensure correct operation of all ports at 10Mbps, 100Mbps or 1000Mbps. Note that for Gigabit Ethernet, all 4 pairs of the twisted-pair cable are used for transmission and receiving signals.

Q13: Why a twisted-pair cable works for 10Mbps hub but not work for 100Mbps hub?

faq_lan card
M bps runs at Cat. 5 twisted-pair cable will cause some cross-talk signal. If the 3rd and 6th wire of RJ-45 connector are not belong at the same twisted pair. That will cause problem with longer distance as above 40 meters. User should check the wiring before install the 100Mbps network.

What type of twisted pair cable is normally used for MultiTasker applications? CAT-5, CAT-5e, CAT-6?

What is a MultiTasker? A FAQ from Altinex
All Twisted Pair products from Altinex can either use any common CAT-5, CAT-5E or CAT6 cable. This makes the connection of AV products over an existing network easy and cost effective. Altinex twist pair products, MultiTasker based or Stand alone, have build in equalization that allows correction of a video signal for long cable runs. To ensure the best results and the longest distance possible Altinex offers no-skew twisted pair cable which does not require any equalization.

What is the advantage to use FORESIGHT Twisted Pair Transmission products?

Unshielded Twisted Paired Transmission - FAQ
Coaxial cabling transmission over 200 meters (RG59), the video signal would loss and have bad video image. Using FORESIGHT passive video transceiver range could up to 300 meters (Color), 600 meters (B/W), even 1KM, 2.4KM to work with active transceiver. To use FORESIGHT TDP414V/TTP414V 4 channel transceiver/cable hub, only need one single CAT 5 cable to transmit 4 video signals for cable saving and fast installation.

What kind of wire to use with FORESIGHT Twisted Pair Transmission products?

Unshielded Twisted Paired Transmission - FAQ
Use UTP (unshielded twisted pair) CAT 5 24 AWG (or over) to have the best transmission quality performance. To use STP (shielded twisted pair) cable, the shielded would cause internal signal interference, so the transmission range would be shorter ( 1.5KM--- >0.8KM) than UTP cable. Un-twisted wire not to be recommended, which easy have interference and range would be shorter.

What cable do I need and where to get it?

drMoto.net unlock FAQ - Frequently asked questions
You will need a standard usb cable (the one that is included in the box when you buy the phone). Because you are going to use a usb cable you have to install drivers for this cable. You can find this drivers at the downloads page If you do not have this cable you can buy it from us. For now go to contact site to ask us for the cable. You can also buy it in every electronic store and ebay. It's often the same cable as used to connect digital (video) camera's to a pc.

Do I need more than one pair of running shoes?

Shin splints - shin splints running shoe guide
Contrary to a popular myth, studies have shown that running shoes do not regain cushioning if allowed to "rest" between runs so there is no advantage to alternating the same model of running shoes. Some people choose to run in two different models so that they aren't experiencing the exact same foot-strike run after run, day after day - not a bad idea for higher mileage runners as long as the two models are appropriate for your foot type.

I have a pair of gates that I need to secure, what could I use to do this?

Gate Furniture FAQ and Maintenance
Because your pair of gates meet in the middle, you will need to use a bolt that can be secured to the floor. The best bolt to use would be a 'long drop bolt'. These are available in various lengths, so the longer bolt you get, the less you have to bend down to operate it! These bolts are supplied with a round socket which is normally cemented into the ground. When the bolt is located into the socket, the gates are secure. Remember, you will need to use one bolt on each gate.

Q05: What is polarity reversal of a twisted-pair signal?

faq_lan card
A UTP cable consists of 4 pairs of twisted-pair cable, in which one pair of wiring is used to transmit data and one pair is used to receive data. To resist the disturbance, each pair send both "positive" and "negative" signals simultaneously, denoted as TX+ and TX-, as depicted below:

Can Category 6 wire be used with FORESIGHT Twisted Pair Transmission products?

Unshielded Twisted Paired Transmission - FAQ
Yes, Use category 6 twisted pair wire, the range would be longer and have highly interference immunity.

Can all inputs of the DA1930CT (Twisted Pair Transmitter) be plugged in at the same time?

ALTINEX, Inc | Support
No. Only one of the inputs (Composite, S-Video, or Computer Component video) can be used at a time as the DA1930CT is a point-to-point transmitter, where all inputs are connected together internally to provide one output. No. Only one output port can be connected to a projector at a time, depending on what input is used with the transmitter. If VGA is transmitted, only a VGA connector can be used. If Composite video is transmitted, only Composite video can be used.

What pin assignments are used in twisted-pair Ethernet cabling?

Ethernet FAQ - WikiFAQ - Answers to Frequently Asked Questio...
Twisted-pair Ethernet (10BASE-T, 100BASE-T, or 1000BASE-T) uses an RJ-45 connector, which is an eight-pin modular connector. When looking at an RJ-45 wall jack (female), contact 1 is on the left and contact 8 is to the right. When looking at the RJ-45 connector on the end of a cable (male) with the tab on the bottom and the contacts on the top, contact 8 is on the left and contact 1 is to the right.

Can RJ11 ordinary telephone wire be used with FORESIGHT Twisted Pair Transmission products?

Unshielded Twisted Paired Transmission - FAQ
Yes, FORESIGHT Video Transceivers could use ordinary telephone wire to transmit and the range up to 300 meters. But the interference would occur easily, therefore we do not recommend this solution unless special environment requested.

Q11: Is the Twisted-Pair Gigabit Port auto-negotiation in speed and operation mode?

faq_gigabit
Yes, the auto-negotiation feature of the Gigabit switch and card allows each port of the device running at one of the following operation modes:

Should I use Nemester if I am not a sick, twisted scoundrel?

Nemester: FAQ
Normal people can use Nemester to find sane enemies for rational disagreements. Nemester features advanced psycho-filtering technology that lets you do battle only in your own mental league. Or, try something different with a complete, irrational nutjob. Nemester puts you in control!
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