Kramer VP-12NHD [5/15] Overview

Overview

3 Overview

This section describes:

 The power connect feature, see section 3.1

 Using shielded twisted pair (STP) / unshielded twisted pair (UTP), see

section 3.2

 A summary of the VP-12NHD, see section 3.3

 Recommendations for achieving the best performance, see section 3.4

3.1 About the Power Connect Feature

The Power Connect feature lets you power a transmitter / receiver system by

connecting just one power adapter— to either the transmitter or the receiver.

The other unit is fed via the cable connecting between the

transmitter/receiver. The Power Connect feature applies as long as the cable

can carry power. The distance does not exceed 50 meters on standard CAT5

cable, for longer distances, heavy gauge cable should be used

For a CAT5 cable exceeding a distance of 50 meters, separate power supplies

should be connected to the transmitter and to the receiver simultaneously.

3.2 Shielded Twisted Pair (STP) / Unshielded Twisted Pair (UTP)

The decision whether to use shielded twisted pair (STP) cable or unshielded

twisted pair (UTP) cable depends on the nature of the application.

It is recommended that in applications with high interference, shielded

twisted pair (STP) cable is used. However, the shield itself does create a

capacitance that degrades the frequency response of the machines. For shorter

distances, of 50m or so, shielded twisted pair (STP) cable is preferred because

it provides protection from interference (degradation is not apparent).

For long range applications, unshielded twisted pair (UTP) cable is preferred.

However, the unshielded twisted pair (UTP) cable should be installed far away from

electric cables, motors and so on, which are prone to create electrical interference.

3.3 About the VP-12NHD

The Kramer VP-12NHD is a high performance distributor for computer

graphics signals, accepting one input, providing necessary buffering and

isolation, and distributing the signal to its identical 12 outputs, as well as

transmitting it over UTP cabling to 3 CAT5 outputs, each with a transmission

range of more than 300 ft. (more than 100 meters).

1 CAT5 cable is still suitable for the video/audio transmission, but not for feeding the power at these distances