Kramer WP-121 User manual

Kramer Electronics, Ltd.
USER MANUAL
Model:
WP-121
XGA/Unbalanced Stereo Audio Line Transmitter

Contents
i
Contents
1Introduction 1
2Getting Started 1
3Overview 2
3.1 About the Kramer Power Connect™ Feature 2
3.2 Shielded Twisted Pair/Unshielded Twisted Pair 2
3.3 Defining the EDID 3
3.4 Recommendations for Achieving the Best Performance 3
4Defining the WP-121 XGA/Unbalanced Stereo Audio Line Transmitter 4
5Installing and Connecting the WP-121 6
5.1 Installing the WP-121 6
5.2 Connecting the WP-121 7
5.3 Grounding the Wall Plate 7
5.4 Wiring the TP Line Output Connectors 8
5.4.1 Wiring the RJ-45 Line Output Connector 8
5.4.2 Wiring the 9-Pin Terminal Block Line Output Connector 8
6Capturing the EDID 9
6.1 Capturing the EDID from a Display Device 9
6.2 Setting a Preconfigured EDID 10
7Technical Specifications 11
Figures
Figure 1: WP-121 Front Panel 4
Figure 2: WP-121 Rear Panel 4
Figure 3: WP-121 80/86mm Front Panel 5
Figure 4: WP-121 80/86mm Rear Panel 5
Figure 5: Installing and Connecting the WP-121 6
Figure 6: WP-121 Grounding Components 7
Figure 7: TP Connector 8
Figure 8: Terminal Block Pinouts 8
Figure 9: WP-121 PCB Assembly Front View with Face Plate Removed 9
Tables
Table 1: WP-121 Front Panel Features 4
Table 2: WP-121 Rear Panel Features 4
Table 3: WP-121 Grounding Screw Descriptions 7
Table 4: TP Connector Pinout 8
Table 5: WP-121 PCB Assembly Features 9
Table 6: Rotary Switch EDID Resolution Settings 10
Table 7: Technical Specifications of the WP-121 11

Introduction
1
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 the video, audio, presentation, and broadcasting
professional 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 groups1
Congratulations on purchasing your Kramer Wall Plate WP-121 XGA/Unbalanced
Stereo Audio Line Transmitter, which is available in American and European
(80mm and 86mm) versions and which is ideal for:
that are clearly defined by function.
•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 manual2
Note: 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 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 cables3
1 GROUP 1: Distribution Amplifiers; GROUP 2: Switchers and Matrix Switchers; 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; GROUP 11: Sierra Products
2 Download up-to-date Kramer user manuals from our Web site at http://www.kramerelectronics.com
3 The complete list of Kramer cables is on our Web site at http://www.kramerelectronics.com

KRAMER: SIMPLE CREATIVE TECHNOLOGY
Overview
2
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 TP (Twisted Pair) signal
and transmits the TP signal to a compatible TP receiver1
The WP-121 XGA/Unbalanced Stereo Audio Line Transmitter features:
.
•HDTV compatibility—up to 1080p
•The option to use either2
•Kramer Power Connect™
a 9-pin terminal block or RJ-45 output TP connector
•EDID Capture—copies and stores the EDID from a display device
•12V DC power supply
3.1 About the Kramer 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 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 a CAT 5 cable exceeding a distance of 50m, separate power supplies should be
connected to the transmitter and to the receiver simultaneously.
3.2 Shielded Twisted Pair/Unshielded Twisted Pair
We recommend that you use Shielded Twisted Pair (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. For cases where there is
skewing, our UTP skew free cable, Kramer BC-XTP, may be used. Bear in mind
though, that we advise using STP cables where possible, since the compliance to
electromagnetic interference was tested using those cables.
Although Unshielded Twisted Pair (UTP) cable might be preferred for long range
applications, the UTP cable should be installed far away from electric cables,
motors and so on, which are prone to create electrical interference.
However, since the use of UTP cable might cause inconformity to electromagnetic
standards, Kramer does not commit to meeting the standard with UTP cable.
1 For example, the Kramer TP-122 or TP-122-od
2 Only one can be connected at a time to a TP receiver. Connecting both simultaneously results in neither operating

Overview
3
3
3.3 Defining the EDID
EDID (Extended Display Identification Data1
The EDID includes information, such as, the name of the manufacturer, product
type, timing data supported by the display, display size, luminance data, and (for
digital displays only) the pixel mapping data.
) is a data-structure that the display
provides to describe its capabilities to a graphics card connected to the display’s
source. The EDID enables the source, such as a PC, to “know” what kind of
monitor is connected to the output.
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.
3.4 Recommendations for Achieving the Best Performance
Achieving the best performance means:
•Utilizing 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 and positioning
your WP-121away from moisture, excessive sunlight, and dust
1 EDID is defined by a standard published by the Video Electronics Standards Association (VESA)

KRAMER: SIMPLE CREATIVE TECHNOLOGY
Defining the WP-121 XGA/Unbalanced Stereo Audio Line Transmitter
4
4 Defining the WP-121 XGA/Unbalanced Stereo Audio Line
Transmitter
Figure 1and Table 1define the front panel of the WP-121. Figure 2and Table 2
define the rear panel of the WP-121.
Figure 1: WP-121 Front Panel
Figure 2: WP-121 Rear Panel
Table 1: WP-121 Front Panel Features
Table 2: WP-121 Rear Panel Features
# 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
# Feature Function
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
Table 1and Table 2refer also to the WP-121 80mm and WP-121 86mm shown
below.

Defining the WP-121 XGA/Unbalanced Stereo Audio Line Transmitter
5
5
Figure 3: WP-121 80/86mm Front Panel
Figure 4: WP-121 80/86mm Rear Panel

KRAMER: SIMPLE CREATIVE TECHNOLOGY
Installing and Connecting the WP-121
6
5 Installing and Connecting the WP-121
Figure 5illustrates the installation and connection of the WP-121.
Figure 5: Installing and Connecting the WP-121
5.1 Installing the WP-121
To install the WP-121 as illustrated in the example in Figure 5:
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 block1
4. Insert the WP-121 into the wall box opening and secure the WP-121 front
panel using the screws.
taking care
that the polarity is correct.
1 Connect the wire labeled “+” to the +12V pin, and the wire labeled “–” to the GND pin

Installing and Connecting the WP-121
7
7
5.2 Connecting the WP-121
To connect the WP-121 as illustrated in the example in Figure 5:
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).
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.
Table 3: WP-121 Grounding Screw
Descriptions
# Item
1 M3x6 Screw
2 M3 Toothed lock washers
3 M3 Ring tongue terminal
Figure 6: WP-121 Grounding Components
The grounding screw is used to earth the chassis of the unit to the ground of the
building, thus preventing static electricity from interfering with the product’s
performance.
To connect the grounding to the WP-121 as illustrated in Figure 6:
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.

KRAMER: SIMPLE CREATIVE TECHNOLOGY
Installing and Connecting the WP-121
8
5.4 Wiring the TP Line Output Connectors
5.4.1 Wiring the RJ-45 Line Output Connector
Table 4and Figure 7define the STP pinout using a straight through cable with
RJ-45 connectors. Connect/solder the cable shield to the connector shield.
Table 4: TP Connector Pinout
36
781 2 5
4
145 78632
Figure 7: TP Connector
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
5.4.2 Wiring the 9-Pin Terminal Block Line Output Connector
The 9-pin terminal block is a plug-in connector for attaching the STP cable. Follow
the colors of the color-coded sticker on these terminals for proper connection of the
cable.
Figure 8defines the pinouts for the terminal block.
Figure 8: Terminal Block Pinouts
Notes:
•Use the connector clips only when removing wires, not when inserting them
•Each wire should protrude 9mm (0.35") from the plastic insulation so that it
can be easily connected. To prevent the wires crossing, be sure that each wire
is fully inserted

Capturing the EDID
9
9
6 Capturing the EDID
The EDID can either be captured automatically by the WP-121 transmitter, or you
can set it manually with one of the preconfigured values (see Table 5).
Figure 9: WP-121 PCB Assembly Front View with Face Plate Removed
Table 5: WP-121 PCB Assembly Features
# Feature Function
1 16 Position Rotary Switch Turn to select the EDID resolution and refresh rate (see Table 6)
2 EDID Capture Button Press to capture the EDID
3 EDID Status LED Flashes slowly when capturing a valid display EDID,
Lights solid when EDID has been successfully captured,
Flashes rapidly when setting a preconfigured EDID
6.1 Capturing the EDID from a Display Device
To capture the EDID from a display device:
1. Using a Philips screwdriver, remove the four screws holding the faceplate to
the PCB assembly.
2. Using a short cable1
3. Ensure that the rotary switch (see
, connect the PC IN input 15-pin HD connector on the
WP-121 to the XGA connector of the display and turn the display on.
Figure 9) is in position 0. If it is not, use a
small screwdriver to turn it to 0.
1 For example, Kramer model number C-MGM/MGM-1

KRAMER: SIMPLE CREATIVE TECHNOLOGY
Capturing the EDID
10
4. Connect the 12V DC power adapter to the power terminal block (see
Figure 2) on the WP-121 and connect the adapter to the mains electricity.
5. Press the EDID capture button (see Figure 9).
The EDID status LED flashes slowly several times. The new EDID is
captured when the LED stops flashing and lights solid.
6. Unplug the power adapter from the mains and disconnect it from the WP-121.
7. Replace the faceplate and secure the four screws removed in Step 1.
6.2 Setting a Preconfigured EDID
To set a preconfigured EDID:
1. Using a Philips screwdriver, remove the four screws holding the front panel to
the rear PCB assembly.
2. Using a small screwdriver, turn the rotary switch (see Figure 9) to the
required position as defined in Table 6.
3. Connect the 12V DC power adapter to the power terminal block (see
Figure 2) on the WP-121 and connect the adapter to the mains electricity.
4. Press the EDID CAPTURE button (see Figure 9).
The EDID status LED flashes rapidly several times. The new EDID is
captured when the LED stops flashing and lights solid.
5. Unplug the power adapter from the mains and disconnect it from the WP-121.
6. Replace the faceplate and secure the four screws removed in Step 1.
Table 6: Rotary Switch EDID Resolution Settings
Rotary Switch
Position
Resolution Refresh
Rate
Rotary Switch
Position
Resolution Refresh
Rate
0 (Default) 1024x768 60Hz 8 1440x900 60Hz
1 800x600 60Hz 9 1440x1050 60Hz
2 1024x768 60Hz A 1600x1200 60Hz
3 1152x864 75Hz B 1680x1050 60Hz
4 1280x720 60Hz C 1920x1080 60Hz
5 1280x800 60Hz D 1920x1200 60Hz
6 1024x1024 60Hz E For future use
7 1360x768 60Hz F For future use

Technical Specifications
11
11
7 Technical Specifications
Table 7lists the technical specifications of the WP-121.
Table 7: Technical Specifications1
INPUTS:
of the WP-121
1 UXGA on a 15-pin HD (F) connector
1 Unbalanced stereo audio on a 3.5mm mini jack
1 Power 12V DC on 2-pin removable terminal block
OUTPUTS: 1 STP on a 9-pin terminal block with springs
1 STP on an RJ-45 connector
MAX. OUTPUT LEVEL: Video: 2Vpp Audio: 2.8Vpp
RESOLUTION: Up to UXGA, 1080p
AUDIO BANDWIDTH: 18KHz
DIFF. GAIN: 1.8%
DIFF. PHASE: 0.3 Deg
K-FACTOR: <0.05%
S/N RATIO: Video: 60dB @ 5MHz Audio: 71dB @ 1KHz
COUPLING: Video: AC Audio: AC
AUDIO THD + NOISE: 0.07%
AUDIO 2nd HARMONIC: 0.001%
POWER SOURCE: 12V DC 340mA (feeding a TP-112 or TP-122-od receiver)
OPERATING TEMPERATURE: 0° to +55°C (32° to 131°F)
STORAGE TEMPERATURE: -45° to +72°C (-49° to 162°F)
HUMIDITY: 10% to 90%, RHL non-condensing
DIMENSIONS: 11.4cm x 3.1cm x 11.4cm (4.5” x 1.2" x 4.5") W, D, H
WEIGHT: 0.14kg (0.31lbs) approx.
ACCESSORIES: Power adapter
1 Specifications are subject to change without notice

KRAMER: SIMPLE CREATIVE TECHNOLOGY
12
LIMITED WARRANTY
WHO IS PROTECTED?
WHAT IS COVERED ANDWHAT IS NOT COVERED
WHAT WE WILL PAY FOR AND WHAT WE WILL NOT PAY FOR
HOW YOU CAN GET WARRANTY SERVICE
LIMITATION OF IMPLIED WARRANTIES
EXCLUSION OF DAMAGES
CAUTION!
Kramer Electronics (hereafter ) warrants this product free from defects in material and workmanship under the
following terms.
Kramer
HOW LONGIS 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:
Thiswarranty gives youspecific 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.
Thisequipment has been tested todetermine compliance with the requirements of:
EN-50081: "Electromagnetic compatibility (EMC);
generic emission standard.
Residential, commercial and lightindustry"
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, or on which the WARRANTY VOID
TAMPERED sticker has been torn,
3. Damage, deterioration or malfunction resultingfrom:
i) Accident, misuse, abuse, neglect, fire, water, lightning or other actsof nature
ii) Product modification, or failure to followinstructions supplied with the product
iii) Repair or attempted repair by anyone not authorized by Kramer
iv) Any shipment of the product(claims must be presentedto the carrier)
v) Removal or installationof the product
vi) Any other cause, which does not relate to a product defect
vii) Cartons, equipment enclosures, cables or accessoriesused inconjunctionwiththe product
1. Removal or installationscharges.
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 inthis product, damages basedupon inconvenience, loss of use of the product, loss
of time, commercialloss; 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 maynot apply toyou.
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.
IF reattached, removed or otherwise interfered with.
* FCCand CE approved using STP cable(fortwisted pairproducts)
NOTE:
Part 1:

Kramer Electronics, Ltd.
Web site: www.kramerelectronics.com
E-mail: [e-mail]
P/N: 2900-000622 REV 3
For the latest information on our products and a list of
Kramer distributors visit 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.