Kramer WP-28, WP-27 User Manual

Kramer Electronics, Ltd.

USER MANUAL



Models:

WP-27,

Component/CV/YC – S/PDIF/Analog Transmitter

WP-28,

Component/CV/YC – S/PDIF/Analog Receiver

Introduction

i

Contents

1

Introduction 1

2

Getting Started 1

2.1

Quick Start 1

3

Overview 3

3.1

About the WP-27 / WP-28 3

3.2

About the Power Connect Feature 4

3.3

Shielded Twisted Pair (STP) / Unshielded Twisted Pair (UTP) 5

3.4

Recommendations for Achieving the Best Performance 5

4

Your WP-27 / WP-28 5

4.1

Your WP-27 Component/CV/YC – S/PDIF/Analog Transmitter 6

4.2

Your WP-28 Component/CV/YC – S/PDIF/Analog Receiver 7

5

Connecting the WP-27 / WP-28 9

5.1

Wiring the CAT 5 LINE IN / LINE OUT RJ-45 Connectors 11

6

Technical Specifications 12

Figures

Figure 1: WP-27 Component/CV/YC – S/PDIF/Analog Transmitter Front Panel 6
Figure 2: WP-27 Component/CV/YC – S/PDIF Line Transmitter Rear Panel 7
Figure 3: WP-28 Component/CV/YC – S/PDIF/Analog Receiver Front Panel 7
Figure 4: WP-28 Component/CV/YC – S/PDIF/Analog Receiver Rear Panel 8
Figure 5: Connecting the WP-27 / WP-28 10
Figure 6: CAT 5 PINOUT 11

Tables

Table 1: WP-27 Component/CV/YC – S/PDIF/Analog Transmitter Front Panel Features 6
Table 2: WP-27 Component/CV/YC – S/PDIF/Analog Transmitter Rear Panel Features 7
Table 3: WP-28 Component/CV/YC – S/PDIF/Analog Receiver Front panel Features 8
Table 4: WP-28 Component/CV/YC – S/PDIF/Analog Receiver Rear Panel Features 8
Table 5: CAT 5 PINOUT 11
Table 6: Technical Specifications of the WP-27 / WP-28 12

Introduction

1

1 Introduction

Welcome to Kramer Electronics (since 1981): a world of unique, creative and
affordable solutions to the infinite range of problems that confront the video,
audio and presentation professional on a daily basis. In recent years, we have
redesigned and upgraded most of our line, making the best even better! Our
500-plus different models now appear in 8 Groups1, which are clearly defined
by function.

Congratulations on purchasing your Kramer WP-27 and WP-28 wall plates,
which are suitable for the following applications:

 Presentation and multimedia applications
 Long range graphics distribution for schools, hospitals, security, and stores

The package includes the following items:

 WP-27 and/or WP-28
 Power supply2, and this user manual3

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 cables4

2.1 Quick Start

This quick start chart summarizes the basic setup and operation steps.

1 GROUP 1: Distribution Amplifiers; GROUP 2: Video and Audio Switchers, Matrix Switchers and Controllers; GROUP 3:

Video, Audio, VGA/XGA Processors; GROUP 4: Interfaces and Sync Processors; GROUP 5: Twisted Pair Interfaces;

GROUP 6: Accessories and Rack Adapters; GROUP 7: Scan Converters and Scalers; and GROUP 8: Cables and Connectors

2 A separate power supply is included with each product

3 Download up-to-date Kramer user manuals from the Internet at this URL: http://www.kramerelectronics.com

4 The complete list of Kramer cables is on our Web site at http://www.kramerelectronics.com

KRAMER: SIMPLE CREATIVE TECHNOLOGY

Getting Started

2

Overview

3

3 Overview

This section describes:

 A summary of the WP-27 / WP-28, see section 3.1
 The power connect feature, see section 3.2
 Using shielded twisted pair (STP) / unshielded twisted pair (UTP), see

section 3.3

 Recommendations for achieving the best performance, see section 3.4

3.1 About the WP-27 / WP-28

The Kramer WP-27 and the WP-28 constitute a twisted pair transmitter and
receiver system for component/composite1 or Y/C video, as well as stereo
analog / S/PDIF audio signals. Each unit can power or be powered by the other
unit over the same CAT5 cable.

The WP-27 transmitter converts the selected2 video and audio signals into a
twisted pair signal and the WP-28 receiver decodes that signal back to its initial
stage. The WP-27 accepts either a component video, composite video or s-
Video source. The selected video source, as well as the selected audio source3 is
transmitted to the WP-28, which outputs that source accordingly4.

 If CV-Y/C is selected, the WP-27 accepts a CV5 or Y/C6 signal7 and

transmits it over the CAT5 cable to the CV or Y/C output on the WP-28
receiver

 If component video is selected8, the component video signal7 is transmitted

over the CAT5 cable to the COMP output on the WP-28 receiver

 If the ANALOG stereo audio source is selected via the AUDIO button, the

WP-27 converts it to a digital 48kHz 24 bit signal which is transmitted,
together with the video signal, over the CAT5 cable to the WP-28 receiver

 If S/PDIF (digital audio) is selected via the AUDIO button, it is transmitted

together with the video signal over the CAT5 cable to the WP-28 receiver

1 Either s-Video or composite video (both inputs cannot be connected simultaneously)

2 Via two INPUT select buttons letting you choose the video signal input and the audio signal input

3 The audio signal is outputted to both outputs simultaneously

4 The WP-27 and WP-28 do not perform any video signal format conversion. A composite video source would need to be

routed to a composite video output or an s-Video source would need to be routed to an s-Video output. Similarly, a

component video source would need to be routed to a component video output

5 By connecting only a CV input and releasing the Y/C-CV COMP VIDEO INPUT button

6 By connecting only a Y/C input and releasing the Y/C-CV COMP VIDEO INPUT button

7 And audio signal

8 By pressing the Y/C-CV COMP VIDEO INPUT button

KRAMER: SIMPLE CREATIVE TECHNOLOGY

Overview

4

The WP-27 Transmitter includes:

 An s-Video (Y/C) input on a 4p connector
 A composite video (CV) input on an RCA connector
 A component video (Y, Cb/Pb, Cr/Pr)1 input on three RCA connectors
 A VIDEO INPUT selector button
 An analog audio input
 A digital audio input (S/PDIF)
 An AUDIO INPUT selector button
 A CAT5 output for signal transmission to the WP-28

The WP-28 Receiver includes:

 An s-Video (Y/C) output on a 4p connector
 A composite video (CV) output on an RCA connector
 A component video (Y, Cb/Pb, Cr/Pr)1 output on 3 RCA connectors
 A video output selector button
 An analog audio output
 A digital audio output (S/PDIF)
 EQ. and LEVEL video output controls
 A CAT5 input for receiving the signal from the WP-27
 An ON LED and a LINK LED

3.2 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 used2.

For a CAT5 cable exceeding a distance of 50 meters, separate power supplies
should be connected to the transmitter and to the receiver simultaneously.

1 Also known as Y, B-Y, R-Y or YUV

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

Your WP-27 / WP-28

5

3.3 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 non apparent).

For a long range application, 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.

3.4 Recommendations for Achieving the Best Performance

Achieving the best performance means:
 Connecting only good quality connection cables, thus avoiding interference,

deterioration in signal quality due to poor matching, and elevated noise
levels (often associated with low quality cables)

 Avoiding interference from neighboring electrical appliances that may

adversely influence signal quality and positioning your WP-27 and/or
WP-28 in a location free from moisture and away from excessive sunlight
and dust

Caution – No operator-serviceable parts inside unit.

Warning – Use only the Kramer Electronics input power

wall adapter that is provided with this unit1.

Warning – Disconnect power and unplug unit from wall

before installing or removing device or servicing unit.

4 Your WP-27 / WP-28

This section describes the:

 WP-27 Component/CV/YC – S/PDIF/Analog Transmitter, see section 4.1
 WP-28 Component/CV/YC – S/PDIF/Analog Receiver, see section 4.2

1 For example: model number AD2512C, part number 2535-000251

KRAMER: SIMPLE CREATIVE TECHNOLOGY

Your WP-27 / WP-28

6

4.1 Your WP-27 Component/CV/YC – S/PDIF/Analog Transmitter

Figure 11, Figure 2, Table 1 and Table 2 define the WP-27:

Figure 1: WP-27 Component/CV/YC – S/PDIF/Analog Transmitter Front Panel

Table 1: WP-27 Component/CV/YC – S/PDIF/Analog Transmitter Front Panel Features

# Feature Function

1 Holes (4) For fastening the wall plate in place
2 Y/C 4p Connector Connect to the s-Video source

3 CV RCA Connector Connect to the composite video source

4 Y/C-CV COMP Selector

Button

Push in to select COMP (component video); release to

select either Y/C (s-Video) or CV (composite video)
5 Y RCA Connector

6 CB/PB RCA Connector Connect to the component video source

7

VIDEO INPUTS

CR/PR RCA Connector

8 ON LED Illuminates when receiving power
9 S/PDIF ANALOG Selector

Button

Push in to select ANALOG; release to select S/PDIF

10 S/PDIF RCA Connector Connect to the digital audio source

11

AUDIO

INPUTS

ANALOG 3.5mm Mini Jack

Connector

Connect to the analog audio source

1 Figure 1 illustrates the WP-27 version for the USA. There is also a similar version available for Europe

Your WP-27 / WP-28

7

Figure 2: WP-27 Component/CV/YC – S/PDIF Line Transmitter Rear Panel

Table 2: WP-27 Component/CV/YC – S/PDIF/Analog Transmitter Rear Panel Features

4.2 Your WP-28 Component/CV/YC – S/PDIF/Analog Receiver

Figure 31, Figure 4, Table 3 and Table 4 define the WP-28:

Figure 3: WP-28 Component/CV/YC – S/PDIF/Analog Receiver Front Panel

1 Figure 3 illustrates the WP-28 version for the USA. There is also a similar version available for Europe

# Feature Function

1 CAT5 OUT RJ-45 Connector

Connects to the CAT5 IN connector on the WP-28

GND PIN Connects (-) to the Ground 2 12V DC

FEED

+ PIN Connects (+) to the connector for powering the unit

KRAMER: SIMPLE CREATIVE TECHNOLOGY

Your WP-27 / WP-28

8

Table 3: WP-28 Component/CV/YC – S/PDIF/Analog Receiver Front panel Features

# Feature Function

1 Holes (4) For fastening the wall plate in place

2 Y/C 4p Connector Connect to the s-Video acceptor

3 CV RCA Connector Connect to the composite video acceptor

4 Y/C-CV COMP Selector

Button

Push in to select COMP (component video); release to select
either Y/C (s-Video) or CV (composite video)

5 Y RCA Connector
6 CB/PB RCA Connector Connect to the component video acceptor

7

VIDEO OUTPUTS

CR/PR RCA Connector

8 ON LED Illuminates when receiving power

9 LINK LED Illuminates when receiving the correct input signal

10 S/PDIF RCA

Connector

Connect to the digital audio source

11

AUDIO

OUTPUTS

ANALOG 3.5mm Mini

Jack Connector

Connect to the analog audio source

Figure 4: WP-28 Component/CV/YC – S/PDIF/Analog Receiver Rear Panel

Table 4: WP-28 Component/CV/YC – S/PDIF/Analog Receiver Rear Panel Features

1 Insert a screwdriver into the small hole and carefully rotate it, trimming the level

# Feature Function

1 CAT5 IN RJ-45 Connector

Connects to the CAT5 OUT connector on the WP-27

2 EQ. Trimmer Adjust1 the cable compensation equalization output signal level

3 LEVEL Trimmer Adjust1 the output signal level

GND PIN Connects (-) to the Ground 4 12V DC

FEED

+ PIN Connects (+) to the connector for powering the unit

Connecting the WP-27 / WP-28

9

5 Connecting the WP-27 / WP-28

When configuring the WP-27 / WP-28 CAT5 Transmitter and Receiver system,
you can choose to transmit one of the three video signals to the receiver: a
component video signal, or a composite video signal or an
s-Video signal. You can connect either a composite video source or an
s-Video signal, as well as a component video signal and use the video input
selector button to choose the desired signal to transmit to the receiver.

In the example illustrated in Figure 5, the WP-27 / WP-28 CAT5 Transmitter
and Receiver system is set up to transmit a component video signal (for
example, for high quality home cinema).

To connect the Transmitter and Receiver system, as shown in the example
illustrated in Figure 5, do the following1:

1. On the WP-27, connect a:

 Component video source (for example, a component video player), to

the Y, CB/PB, and CR/PR RCA VIDEO INPUT connectors

 A digital audio source2 (for example, the audio signal of the component

video player), to the S/PDIF AUDIO INPUT RCA connector

2. On the WP-27, press3 the VIDEO INPUT selector button and release4 the
AUDIO INPUT selector button.

3. On the WP-28, connect the:
 Y, CB/PB, and CR/PR RCA VIDEO INPUT connectors to a component

video aceptor (for example, a plasma display)

 S/PDIF AUDIO INPUT RCA connector to a digital audio acceptor (for

example, a receiver and speakers)

4. On the WP-28, press5 the VIDEO OUTPUT selector button.

5. Connect the CAT5 OUT connector of the WP-27 to the CAT5 IN
connector of the WP-28, via UTP cabling (maximum range of up to 300ft
(100m)).

6. On both6 the WP-27 and the WP-28, connect the 12V DC power adapter
to the power socket and connect the adapter to the mains electricity (not
shown in Figure 5).

1 You can transmit one of three video signals to the receiver: a component video signal, a composite video signal or an s-

Video signal. The receiver outputs this signal only

2 Alternatively, you can also connect an analog audio signal and select it via the AUDIO INPUT selector button

3 Thus selecting the component video input

4 Thus selecting the digital audio input

5 Thus selecting the component video output

6 If you cannot connect the power to both the WP-27 and WP-28, you can just connect the power to the WP-28

KRAMER: SIMPLE CREATIVE TECHNOLOGY

Connecting the WP-27 / WP-28

10

7. If required, on the WP-28, adjust1 the equalization and audio level.

Figure 5: Connecting the WP-27 / WP-28

1 Use a screwdriver to carefully rotate the trimmer, adjusting the appropriate level

Connecting the WP-27 / WP-28

11

5.1 Wiring the CAT 5 LINE IN / LINE OUT RJ-45 Connectors

Table 5 and Figure 6 define the CAT 5 PINOUT, using a straight pin to pin
cable with RJ-45 connectors:

Table 5: CAT 5 PINOUT

EIA /TIA 568A EIA /TIA 568B

PIN Wire Color PIN Wire Color

1 Green / White 1 Orange / White

2 Green 2 Orange

3 Orange / White 3 Green / White

4 Blue 4 Blue

5 Blue / White 5 Blue / White

6 Orange 6 Green
7 Brown / White 7 Brown / White

8 Brown 8 Brown

Pair 1 4 and 5 Pair 1 4 and 5

Pair 2 3 and 6 Pair 2 1 and 2

Pair 3 1 and 2 Pair 3 3 and 6

Pair 4 7 and 8

Pair 4 7 and 8

Figure 6: CAT 5 PINOUT

KRAMER: SIMPLE CREATIVE TECHNOLOGY

Technical Specifications

12

6 Technical Specifications

Table 6 defines the technical specifications1:

Table 6: Technical Specifications2 of the WP-27 / WP-28

WP-27:

1 s-Video (Y/C) 1Vpp/75 (Y), 0.3Vpp/75 (C) on a 4p

connector
1 composite video (CV) 1Vpp/75 on an RCA connector
1 component 1Vpp/75 (Y,Pb,Pr) on 3 RCA connectors
1 S/PDIF (digital audio) on an RCA connector
1 audio ANALOG on a 3.5mm mini jack

INPUTS:

WP-28:

1 RJ-45 CAT-5 shielded connector (CAT5 in)

WP-27:

1 RJ-45 CAT-5 shielded connector (CAT5 out) OUTPUTS:

WP-28:

1 s-Video (Y/C) 1Vpp/75 (Y), 0.3Vpp/75 (C) on a 4p

connector
1 composite video (CV) 1Vpp/75 on an RCA connector
1 component 1Vpp/75 (Y,Pb,Pr) on 3 RCA connectors
1 S/PDIF (digital audio) on an RCA connector
1 audio ANALOG on a 3.5mm mini jack

MAX. OUTPUT LEVEL:

WP-28:

VIDEO: 1V AUDIO: 2.5V

RESOLUTION:

Up to UXGA, up to 1080p

WP-27:

Video input selector button, audio input selector button CONTROLS:

WP-28:

Video output selector button, Level: –7.5dB to +4.4dB,

EQ.: 0dB to +33dBm (130m) @ 50MHz

BANDWIDTH (-3dB)3: AUDIO: 20Hz – 20kHz@0.5dB

S/N RATIO: AUDIO: <–80dB

TOTAL GAIN: AUDIO:

Analog/analog: 0dB
Analog/SPDIF: –12dBFS

COUPLING: AC

TND+N: AUDIO: <0.01%

WP-27:

12VDC, 200mA POWER SOURCE:

WP-28:

12VDC, 300mA

DIMENSIONS:

WP-27/ WP-28: 12 cm x 7.5 cm x 2.5 cm (4.7" x 2.95" 0.98", W, D, H)

WEIGHT:

WP-27/ WP-28: 0.3 kg (0.67 lbs.) approx

ACCESSORIES: Power Supply

1 Specifications for 100m of CAT5 UTP cable, unless otherwise specified

2 Specifications are subject to change without notice

3 For the Transmitter/Receiver pair

13

LIMITED WARRANTY

WHO IS PROTECTED?

WHAT IS COVERED AND WHAT IS NOT COVERED

WHAT WE WILL PAY FOR AND WHAT WE WILL NOT PAY FOR

HOW YOU CAN GET WARRANTY SERVICE

LIMITATION OF I MPL IED WARRANTIES

EXCLUSION OF DAMAGES

CAUTION!

Kramer Electronics (hereafter ) warrants this product free from defects in material and workmanship under the

following terms.

Kramer

HOW LONG IS THE WARRANTY

Labor and parts are warranted for seven years from the date of the first customer purchase.

Only the first purchase customer may enforce this warranty.

We will pay labor and material expenses for covered items. We will not pay for the following:

The liability of Kramer for any effective products is limited to the repair or replacement of the product at our option. Kramer shall

not be liable for:

This warranty gives you specific legal rights, and you may also have other rights, which vary from place to place.

All products returned to Kramer for service must have prior approval. This may be obtained from your dealer.

This equipment has been tested to determine compliance with the requirements of:

EN-50081: "Electromagnetic compatibility (EMC);

generic emission standard.
Residential, commercial and light industry"
EN-50082: "Electromagnetic compatibility (EMC) generic immunity standard.

Part 1: Residential, commercial and light industry environment".
CFR-47: FCC Rules and Regulations:

Part 15: “Radio frequency devices

Subpart B Unintentional radiators”

Except as below, this warranty covers all defects in material or workmanship in this product. The following are not covered

by the warranty:

1. Any product which is not distributed by Kramer, or which is not purchased from an authorized Kramer dealer. If you are

uncertain as to whether a dealer is authorized, please contact Kramer at one of the agents listed in the Web site

www.kramerelectronics.com.

2. Any product, on which the serial number has been defaced, modified or removed.

3. Damage, deterioration or malfunction resulting from:

i) Accident, misuse, abuse, neglect, fire, water, lightning or other acts of nature
ii) Product modification, or failure to follow instructions supplied with the product
iii) Repair or attempted repair by anyone not authorized by Kramer
iv) Any shipment of the product (claims must be presented to the carrier)
v) Removal or installation of the product
vi) Any other cause, which does not relate to a product defect
vii) Cartons, equipment enclosures, cables or accessories used in conjunction with the product

1. Removal or installations charges.

2. Costs of initial technical adjustments (set-up), including adjustment of user controls or programming. These costs are the

responsibility of the Kramer dealer from whom the product was purchased.

3. Shipping charges.

1. To obtain service on you product, you must take or ship it prepaid to any authorized Kramer service center.

2. Whenever warranty service is required, the original dated invoice (or a copy) must be presented as proof of warranty

coverage, and should be included in any shipment of the product. Please also include in any mailing a contact name,
company, address, and a description of the problem(s).

3. For the name of the nearest Kramer authorized service center, consult your authorized dealer.

All implied warranties, including warranties of merchantability and fitness for a particular purpose, are limited in duration to
the length of this warranty.

1. Damage to other property caused by defects in this product, damages based upon inconvenience, loss of use of the product, loss

of time, commercial loss; or:

2. Any other damages, whether incidental, consequential or otherwise. Some countries may not allow limitations on how long an

implied warranty lasts and/or do not allow the exclusion or limitation of incidental or consequential damages, so the above
limitations and exclusions may not apply to you.

Servicing the machines can only be done by an authorized Kramer technician. Any user who makes changes or

modifications to the unit without the expressed approval of the manufacturer will void user authority to operate the
equipment.

Use the supplied DC power supply to feed power to the machine.

Please use recommended interconnection cables to connect the machine to other components.

NOTE:

Part 1:

Kramer Electronics, Ltd.

Web site: www.kramerelectronics.com

E-mail: [e-mail]

P/N: 2900-000290 REV 1

For the latest information on our products and a list of Kramer

distributors, visit our Web site: www.kramerelectronics.com,

where updates to this user manual may be found.

We welcome your questions, comments and feedback.

Caution

Safety Warning:

Disconnect the unit from the power supply before
opening/servicing.