Kramer WP-120 [7/14] Overview

WP-120 - Overview

3 Overview

The Kramer WP-120 wall plate is an XGA line receiver that receives an encoded

CAT5 signal transmitted by a transmitter (for example, the Kramer WP-110 or

PT-110), decodes it and converts it to an XGA output. In particular, the WP-120

features:

 EQ. and level controls

 The Power Connect™ feature where a single connection to the transmitter or

the receiver powers both units when the devices are within 150ft (50m) of

each other

 12V DC power

3.1 About the Power Connect Feature

The Power Connect feature applies as long as the cable can carry power. The

distance does not exceed 50 meters on standard CAT 5 cable. For longer

distances, heavy gauge cable should be used. For a CAT 5 cable exceeding a

distance of 50 meters, separate power supplies should be connected to the

transmitter and to the receiver simultaneously.

CAT 5 cable is still suitable for the video/audio transmission, but not for feeding the power at

these distances

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.

In applications with high interference, shielded twisted pair (STP) cable is

recommended. 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