...of Cat 3 and Cat 4 cables • Category 3 • Category 3 is the performance level for voice and data transmission up to 16 MHz or 10 Mbps, such as 4-Mbps Token Ring and 10BASE-T. • Category 4 • Categroy 4 is the performance level for voice and data ...

...pairs. In addition, the cables are noise resistant, which makes the Category 7/Class F systems ideal for high EMI areas, such as industrial and medical imaging facilities. Category 7/Class F cable can also increase security by preventing the emissio...

...DVI. Buy only tested cables with the HDMI logo. This guarantees the cable will perform to specification especially because there is no maximum length specified in the HDMI standard. And because longer lengths require a larger cable, HDMI cables u...

...ports. Designed to consolidate the cable clutter associated with multiple peripherals and ports, USB supports all types of computer- and telephone-related devices. • USB detects and configures the new devices instantly • Before the arrival of Univ...

...connecting IEEE-488 cables, some rules apply. The total number of devices should be 15 or less. The total length of all cables should not exceed 2 metres multiplied by the number of connected devices, up to a maximum of 20 metres. And no more th...

...money. • Computer cables can only be too short, but never too long. The same applies to networking cables. Sometimes it is just the last meter that is missing, but in many cases some kilometres are missing. A standard 10/100 or 10/100/1000 Cop...

...pairs carry colour and synchronisation signals (one colour pair). Cables rated higher than CAT5 don’t have equal pair lengths to fulfill their intended Ethernet specifications, so the colour signals arrive at a different time at the remote end. •  

Crosstalk. • Crosstalk • Near-End Crosstalk (NEXT) • One of the most important cable measurements is Near-End Crosstalk (NEXT). It’s signal interference from one pair that adversely affects another pair on the same end. Crosstalk occurs betwee...