Kramer WP-121 Manuale utente

KRAMER ELECTRONICS LTD.

USER MANUAL

MODEL:

WP-121

XGA/Unbalanced Stereo Audio

Line Transmitter

P/N: 2900-000622 Rev 5

WP-121 – Contents i

Contents

1Introduction 1

2Getting Started 2

2.1 Achieving the Best Performance 2

3Overview 3

3.1 About the Power Connect™ Feature 3

3.2 Shielded Twisted Pair (STP)/Unshielded Twisted Pair (UTP) 4

3.3 Defining EDID 4

4Defining the WP-121 5

5Installing and Connecting the WP-121 7

5.1 Installing the WP-121 7

5.2 Connecting the WP-121 7

5.3 Grounding the Wall Plate 8

5.1 Wiring the TP LINE IN / LINE OUT RJ-45 Connectors 9

5.2 Wiring the 9-Pin Terminal Block Line Output Connector 10

6Capturing the EDID 11

7Capturing the EDID from a Display Device 12

8Technical Specifications 14

Figures

Figure 1: WP-121 US Version (69mm) 5

Figure 2: WP-121 Front Panel (80/86mm) 6

Figure 3: WP-121 Rear Panel (80/86mm) 6

Figure 4: Installing and Connecting the WP-121 8

Figure 5: Ground Connection 8

Figure 6: TP PINOUT 9

Figure 7: Terminal Block Pinouts 10

Figure 8: WP-121 PCB Assembly Front View with Face Plate Removed 11

WP-121 - Introduction 1

1 Introduction

Welcome to Kramer Electronics! Since 1981, Kramer Electronics has been

providing a world of unique, creative, and affordable solutions to the vast range of

problems that confront video, audio, presentation, and broadcasting professionals

on a daily basis. In recent years, we have redesigned and upgraded most of our

line, making the best even better!

Our 1,000-plus different models now appear in 11 groups that are clearly defined

by function: GROUP 1: Distribution Amplifiers; GROUP 2: Switchers and Routers;

GROUP 3: Control Systems; GROUP 4: Format/Standards Converters; GROUP

5: Range Extenders and Repeaters; GROUP 6: Specialty AV Products; GROUP

7: Scan Converters and Scalers; GROUP 8: Cables and Connectors; GROUP 9:

Room Connectivity; GROUP 10: Accessories and Rack Adapters and GROUP 11:

Sierra Video Products.

Congratulations on purchasing your Kramer WP-121 XGA/Unbalanced Stereo

Audio Line Transmitter, which is ideal for the following typical applications:

•Presentation and multimedia applications

•Long range graphics distribution for schools, hospitals, security and stores

The package includes the following items:

•WP-121 XGA/Unbalanced Stereo Audio Line Transmitter

•A 12V DC power supply

•This user manual

Download up-to-date Kramer user manuals from our Web site at

http://www.kramerelectronics.com

All references to WP-121 in this manual refer to the US version

(69mm) as well as to the WP-121 80mm and WP-121 86mm

European versions.

2 WP-121 - Getting Started

2 Getting Started

We recommend that you:

•Unpack the equipment carefully and save the original box and packaging

materials for possible future shipment

•Review the contents of this user manual

•Use Kramer high performance high resolution cables

Go to http://www.kramerelectronics.com to check for up-to-date

user manuals, application programs, and to check if firmware

upgrades are available (where appropriate).

Caution: No operator serviceable parts inside the unit

Warning: Use only the Kramer Electronics input power wall

adapter that is provided with the unit

Warning: Disconnect the power and unplug the unit from the

wall before installing

2.1 Achieving the Best Performance

To achieve the best performance:

•Use only good quality connection cables to avoid interference, deterioration

in signal quality due to poor matching, and elevated noise levels (often

associated with low quality cables)

•Do not secure the cables in tight bundles or roll the slack into tight coils

•Avoid interference from neighboring electrical appliances that may adversely

influence signal quality

•Position your Kramer WP-121 away from moisture, excessive sunlight and

dust

WP-121 - Overview 3

3 Overview

The Kramer WP-121 wall plate is a line transmitter that accepts a UXGA video

and an unbalanced stereo audio signal, encodes them to a twisted pair (TP) signal

and transmits the TP signal to a compatible TP receiver.

For example, the Kramer TP-122/N or TP-122-od.

The WP-121 XGA/Unbalanced Stereo Audio Line Transmitter features:

•HDTV compatibility up to 1080p

•The option to use either a 9-pin terminal block or RJ-45 output TP connector

Only one can be connected at a time to a TP receiver. Connecting both simultaneously

results in neither operating

•Kramer Power Connect™

•EDID Capture copies and stores the EDID from a display device

•12V DC power supply

3.1 9BAbout the Power Connect™ Feature

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

feature is available when using STP cable and the distance does not exceed 50m

(164ft) on standard CAT 5 cable. For longer distances, heavy gauge cable should

be used (CAT 5 cable is still suitable for the video/audio transmission, but not for

feeding the power at these distances). For units which are connected via RJ-45

connectors, make sure that the shield of the STP cable is connected to the metal

casing of the connectors on both ends of the cable. For units which are connected

via terminal block connectors, the shield of the STP cable must be connected to a

ground terminal on the units at both ends (use the ground terminal of the power

supply connection if necessary).

For a CAT 5 cable exceeding a distance of 50m, separate power supplies should

be connected to the transmitter and to the receiver simultaneously.

4 WP-121 - Overview

3.2 Shielded Twisted Pair (STP)/Unshielded Twisted Pair

(UTP)

We recommend that you use Shielded Twisted Pair (STP) cable, and stress that

the compliance to electromagnetic interference was tested using STP cable.

There are different levels of STP cable available, and we advise you to use the

best quality STP cable that you can afford. Our non-skew-free cable, Kramer

BC-STP is intended for analog signals where skewing is not an issue.

In cases where there is skewing, our Unshielded Twisted Pair (UTP) skew-free

cable, Kramer BC-XTP, may be advantageous, and UTP cable might also be

preferable for long range applications. In any event when using UTP cable, it is

advisable to ensure that the cable is installed far away from electric cables, motors

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

3.3 Defining EDID

The Extended Display Identification Data (EDID) is a data-structure provided by a

display, to describe its capabilities to a graphics card (that is connected to the

display’s source). The EDID enables the WP-121 to “know” what kind of monitor is

connected to the output. The EDID includes the manufacturer’s name, the product

type, the timing data supported by the display, the display size, luminance data

and (for digital displays only) the pixel mapping data.

EDID is defined by a standard published by the Video Electronics Standards

Association (VESA).

The WP-121 is supplied with a default EDID but it can also store and recall EDID

data in non-volatile memory, allowing convenient and reliable connection to the

source.

WP-121 - Defining the WP-121 5

4 Defining the WP-121

Figure 1defines the WP-121.

Figure 1: WP-121 US Version (69mm)

# Feature Function

1 AUDIO IN 3.5mm Mini Jack Connect to an unbalanced stereo audio source

2 PC IN XGA 15-Pin HD (F)

Connector Connect to the XGA source

3 ON LED Lights red when receiving power, lights green when

receiving a signal from a video source

4 +12V PIN Power —

Removable

Terminal Block

Connect to the positive (+) of the power adapter

GND PIN Connect to the negative (-) of the power adapter

5 Ground connection. Ring-tongue terminal and

grounding screw

6 LINE OUTPUTS 9-Pin TP terminal block

7 RJ-45 TP connector

6 WP-121 - Defining the WP-121

Figure 2and Figure 3define the WP-121 front and rear panels, respectively, for

the European 80mm and 86mm versions.

Figure 2: WP-121 Front Panel (80/86mm)

Figure 3: WP-121 Rear Panel (80/86mm)

# Feature Function

1 AUDIO IN 3.5mm Mini Jack Connect to an unbalanced stereo audio source

2 PC IN XGA 15-Pin HD (F)

Connector Connect to the XGA source

3 ON LED Lights red when receiving power, lights green when

receiving a signal from a video source

4 +12V PIN Power —

Removable

Terminal Block

Connect to the positive (+) of the power adapter

GND PIN Connect to the negative (-) of the power adapter

5 LINE OUTPUTS RJ-45 TP connector

6 9-pin TP terminal block

7 Ground connection. Ring-tongue terminal and

grounding screw

WP-121 - Installing and Connecting the WP-121 7

5 Installing and Connecting the WP-121

This section explains how to install and connect the WP-121.

5.1 Installing the WP-121

To install the WP-121 as illustrated in the example in Figure 4:

1. Connect either the:

Terminal block line output of the WP-121 to the pre-installed STP

wiring in the wall box opening that connects to the TP receiver

—or—

RJ-45 line output of the WP-121 to the pre-installed STP wiring in the

wall box opening that connects to the TP receiver

2. Recommended—ground the wall plate (see Section 5.3).

3. Connect the 12V DC power supply to the power terminal block taking care

that the polarity is correct.

Connect the wire labeled “+” to the +12V pin, and the wire labeled “–” to the GND pin.

4. Insert the WP-121 into the wall box opening and secure the WP-121 front

panel using the screws.

5.2 Connecting the WP-121

To connect the WP-121 as illustrated in the example in Figure 4:

Note: Do not connect both the RJ-45 and terminal block connectors to receivers.

If you do so, neither will work.

1. Connect the UXGA source to the PC IN connector (for example, a computer

graphics source).

2. Connect the unbalanced stereo source to the AUDIO IN connector (for

example, the audio signal from the computer graphics source).

8 WP-121 - Installing and Connecting the WP-121

Figure 4: Installing and Connecting the WP-121

5.3 Grounding the Wall Plate

Grounding the WP-121 is recommended. The grounding wire is connected to the

rear of the chassis of the unit. The grounding screw is used to earth the unit to the

ground of the building. This helps prevent static electricity from interfering with

product performance.

To connect the grounding to the WP-121 as shown in Figure 5:

1. Crimp the ring-tongue terminal to the building grounding point wire.

(We recommend that you use a green-yellow #18 AWG wire (0.82mm2) crimped with a

proper hand-tool).

2. Insert the M3x6 screw through the toothed lock washers and the ring-tongue

terminal in the order shown above.

3. Insert the M3x6 screw (with the two toothed lock washers and ring-tongue

terminal in place) into the grounding screw hole on the rear of the WP-121

and tighten the screw.

Figure 5: Ground Connection

# Item

1 M3x6 Screw

2 M3 Toothed lock washers

3 M3 Ring tongue terminal

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