Kramer 621T User manual

Kramer Electronics, Ltd.
USER MANUAL
Models:
621T, DVI Optical Transmitter
621R, DVI Optical Receiver

Contents
i
Contents
1Introduction 1
2Getting Started 1
2.1 Quick Start 2
3Overview 3
3.1 Power Connect Feature 4
3.2 Shielded Twisted Pair (STP) / Unshielded Twisted Pair (UTP) 4
4Your DVI Optical Transmitter/ Receiver 4
4.1 Your 621T DVI Optical Transmitter 5
4.2 Your 621R DVI Optical Receiver 6
5Using the DVI Optical Transmitter/Receiver 8
5.1 Connecting the 621T/621R DVI Optical Transmitter/Receiver 8
5.2 Operating the 621T/621R DVI Optical Transmitter/Receiver 9
5.3 Wiring the CAT 5 LINE IN / LINE OUT RJ-45 Connectors 10
6Technical Specifications 11
Figures
Figure 1: 621T DVI Optical Transmitter 5
Figure 2: 621T DVI Optical Transmitter – Top and Lower Side Panels 5
Figure 3: 621T DVI Optical Receiver 6
Figure 4: 621R DVI Optical Receiver – Top and Lower Side Panels 7
Figure 5: 621T and 621R DVI Optical Transmitter and Receiver System 8
Figure 6: Connecting the 621T/621R DVI Optical Transmitter/Receiver 9
Figure 7: CAT 5 PINOUT 10
Tables
Table 1: 621T DVI Optical Transmitter Features 6
Table 2: 621R DVI Optical Receiver Features 7
Table 3: CAT 5 PINOUT 10
Table 4: CAT 5 Power PINOUT 10
Table 5: Technical Specifications of the 621T/621R 11

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 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 groups1that are clearly defined by function.
Thanks for purchasing your Kramer 621T DVI Optical Transmitter and 621R
DVI Optical Receiver, which are ideal for:
•Digital display systems
•Flat panel displays, plasma display panels and projectors in conference
rooms and auditoriums
•Kiosks with digital flat panel displays for information display
The 621T and 621R are available as two separate packages. The 621T
package includes the following items:
•621T DVI Optical Transmitter
•Power adapter (12V DC 500mA Input)2and this user manual3
The 621R package includes the following items:
•621R DVI Optical Receiver
•Power adapter (12V DC 1.25A Input)2and this user manual3
•One DVI/DVI male-to-male cable
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 optical cables4. Note that the units are
designed for use with MULTI-MODE optical cables
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 When setting up a transmitter / receiver system you can connect the 12V power supplies to the transmitter and to the
receiver simultaneously. However, the power connect feature does let you connect just one power supply to either the
transmitter or receiver. In such a case, use the 1.25A power supply
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
2.1 Quick Start
This quick start chart summarizes the basic setup and operation:

Overview
3
3 Overview
The high performance Kramer 621T and 621R are optical transmitter and
receivers for DVI signals for computer resolutions of up to 1920x1200 at
60Hz and HDTV resolutions of up to 1080p at 60Hz. The 621T converts a
DVI signal into an optical signal and the 621R converts the optical signal
back to DVI.
The 621T and 621R have a transmission range of more than 300 ft. (more
than 100 meters) of single link high-resolution digital graphic data over fiber
optic cables, and EDID1/HDCP2parameters over DDC3(UTP) cabling.
In particular, the 621T/621R pair:
•Provides a single-link DVI connection, supporting a resolution of up to
1920x1200 at 60Hz refresh rate
•Supports up to 1.65Gbps bandwidth
•Transmits one red, one green and one blue channel, and one clock −over the
fiber optic cables, with 4 simplex or 2 duplex LC fiber connectors
•Performs DDC/HDCP2interconnection over CAT5 with RJ-45
connectors, and also provides power via the UTP cable
•Is strictly regulated under the Class 1 Laser Eye Safety in compliance
with FDA/CDRH and IEC 60825-1
•Complies with the limits for a Class A digital device, pursuant to part 15
and 2 of FCC and CE
•Does not require any special memory size, CPU speed and chipsets, when
using a computer
•Is HDTV compatible
To achieve the best performance:
•Connect 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)
•Avoid interference from neighboring electrical appliances and position your
Kramer 621R and 621T away from moisture, excessive sunlight and dust
1 Extended Display Identification Data
2 High-Bandwidth Digital Content Protection
3 Using DDC (Digital Display Channel), the display can inform the video card about its properties, such as the maximum
resolution and the color depth. The video card can then use this information to ensure that you are presented with valid
options for configuring the display

KRAMER: SIMPLE CREATIVE TECHNOLOGY
Your DVI Optical Transmitter/ Receiver
4
3.1 Power Connect Feature
When setting up a transmitter / receiver system you can connect the 12V
power supplies to the transmitter and to the receiver simultaneously. However,
the Power Connect feature does let you connect just one power supply to
either the transmitter or receiver. The other unit is fed over the same CAT 5
cable. In such a case, use the 1.25A power supply.
The Power Connect feature applies as long as the CAT 5 cable is heavy gauge
cable (that is, it can carry power). The distance does not exceed 50 meters on
standard cable.
For a distance of 100 meters, separate power supplies must be connected to the
transmitter and to the receiver simultaneously, unless using heavy gauge CAT 5
cable.
3.2 Shielded Twisted Pair (STP) / Unshielded Twisted Pair (UTP)
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 digital signals and 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.
4 Your DVI Optical Transmitter/ Receiver
This section defines the DVI Optical Transmitter / Receiver:
•621T DVI Optical Transmitter (see section 4.1)
•621R DVI Optical Receiver (see section 4.2)

Your DVI Optical Transmitter/ Receiver
5
4.1 Your 621T DVI Optical Transmitter
Figure 1, Figure 2 and Table 1 define the 621T DVI Optical Transmitter:
Top Side Panel
Lower Side Panel
Figure 1: 621T DVI Optical Transmitter
Top Side Panel
Lower Side Panel
Figure 2: 621T DVI Optical Transmitter – Top and Lower Side Panels

KRAMER: SIMPLE CREATIVE TECHNOLOGY
Your DVI Optical Transmitter/ Receiver
6
Table 1: 621T DVI Optical Transmitter Features
# Feature Function
1 DVI IN Connector Connects to the DVI source
2 12V DC 12V DC connector for powering the unit
3 POWER LED Lights when receiving power
4 LINK LED Lights when receiving a stable DVI signal
5 Optic Cables CL R Connect to the optic connectors on the 621R
6 G B
7 DDC CAT5 Connector Connects1to the DDC RJ-45 connector on the 621R
4.2 Your 621R DVI Optical Receiver
Figure 3, Figure 4 and Table 2 define the 621RDVI Optical Receiver:
Top Side Panel
Lower Side Panel
Figure 3: 621T DVI Optical Receiver
1 Using a UTP CAT5 cable with RJ-45 connectors at both ends (the PINOUT is defined in Table 3 and Figure 7)

Your DVI Optical Transmitter/ Receiver
7
Lower Side Panel
Top Side Panel
Figure 4: 621R DVI Optical Receiver – Top and Lower Side Panels
Table 2: 621R DVI Optical Receiver Features
# Feature Function
1 DVI OUT Connector Connects to the DVI Acceptor
2 12V DC 12V DC connector for powering the unit
3 POWER LED Lights when receiving power
4 LINK LED Lights when receiving the correct input signal
5 Optic Cables R CL Connect to the optic connectors on the 621T
6 B G
7 DDC CAT5 Connector Connects1to the DDC RJ-45 connector on the 621T
1 Using a UTP CAT5 cable with RJ-45 connectors at both ends (the PINOUT is defined in Table 3 and Figure 7)

KRAMER: SIMPLE CREATIVE TECHNOLOGY
Using the DVI Optical Transmitter/Receiver
8
5 Using the DVI Optical Transmitter/Receiver
You can use the 621T and 621R to configure a DVI optical transmitter and
receiver system as illustrated in Figure 5: the source connects to the 621T, the
621R connects to the display, and both transmitter and receiver are
interconnected via fiber optics and UTP cabling.
Receiver
621R
Transmitter
621T
Optic Fiber Cables up to 100 meters
DDC Cabling up to 100 meters
Figure 5: 621T and 621R DVI Optical Transmitter and Receiver System
It is recommended to test your system configuration by first connecting the
entire system (as illustrated in Figure 5), using short copper cables instead of
optical fiber cables
5.1 Connecting the 621T/621R DVI Optical Transmitter/Receiver
To connect1the 621T DVI Optical Transmitter with the 621R DVI Optical
Receiver, as the example in Figure 6 illustrates, do the following:
1. Connect the DVI source (for example, a set top box2) to the 621T DVI IN
connector, using the DVI cable.
Make sure that the system is not powered up when connecting the DVI source.
2. On the 621R, connect the DVI OUT connector to the DVI acceptor (for
example, a display), using the DVI cable.
3. Remove the module dust covers and connect each duplex LC fiber cable
one-by-one to each of the four LC receptacles of the 621T and 621R.
4. Carefully recheck the polarities and ensure that the duplex connectors are fully
engaged.
Do not look directly into the LC receptacles of the 621T, while powered on,
although this product is regulated strictly enough to operate under the Laser
Class 1, classified by CDRH/FDA for eye safety
1 Switch OFF the power on each device before connecting it to your 621T and 621R. After connecting your 621T and 621R,
switch on its power and then switch on the power on each device
2 Alternatively, you could connect a computer or other DVI source

Using the DVI Optical Transmitter/Receiver
9
5. Connect the DDC RJ-45C connector on the 621T to the DDC RJ-45C
connector on the 621R, via UTP cabling (see section 5.3).
6. Connect the 12V 2.1A DC power adapter to the power socket of either the
621T or1the 621R and connect the adapter to the mains electricity (not shown).
7. Turn the power on the source and the display to ON.
Figure 6: Connecting the 621T/621R DVI Optical Transmitter/Receiver
5.2 Operating the 621T/621R DVI Optical Transmitter/Receiver
To properly operate the 621T/621R system:
•Make sure you have a media receiver or a graphic controller card with a
DVI connector on your PC/Mac or SUN system.
•Make sure that your graphic card supports the maximum resolution of the
display you are about to connect
•Avoid “hot plugging” the 621T or 621R. This is not a recommended
practice with live digital voltages
1 Alternatively, connect the separate power supplies to the transmitter and to the receiver simultaneously

KRAMER: SIMPLE CREATIVE TECHNOLOGY
Using the DVI Optical Transmitter/Receiver
10
5.3 Wiring the CAT 5 LINE IN / LINE OUT RJ-45 Connectors
Table 3, Table 4 and Figure 7 define the CAT 5 PINOUT, using a straight pin-
to-pin cable with RJ-45 connectors:
Figure 7: CAT 5 PINOUT
Table 3: 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
Table 4: CAT 5 Power PINOUT
PIN Symbol Description
1 DDC Data GND DDC Data line return ground
2 DDC Data DDC Data line for (HDMI Digital Display Channel) DDC2B communication
3 DDC Clock GND DDC Clock line return ground
4 Power GND Main power return ground
5 Power Main power for Kramer module
6 DDC Clock DDC Clock line for (HDMI Digital Display Channel) DDC2B communication
7 5V_IN DVI 5V (DVI No. 14 pin for Display)
8 HPD Signal is driven by monitor to enable the system to identify the presence of a
Display

Technical Specifications
11
6 Technical Specifications
Table 5 includes the technical specifications:
Table 5: Technical Specifications1of the 621T/621R
621T 621R
INPUTS: DVI IN (DVI-D on a DVI-I connector) 4 LC optical connectors for R, G, B &
clock. 1 CAT 5 (RJ-45) for DDC and
HDCP bi-directional data
OUTPUTS: 4 LC optical connectors for R, G, B &
Clock. 1 CAT 5 (RJ-45) for DDC and
HDCP bi-directional data
DVI OUT (DVI-D on a DVI-I connector)
BANDWIDTH: 1.65Gbps
POWER SOURCE: 12V DC 500mA 12V DC 1.25A
DIMENSIONS: 12cm x 8.05cm x 2.75cm (4.72" x 3.17" x 1.08", W, D, H)
WEIGHT: 0.3 kg. (0.67 lbs.) approx.
ACCESSORIES: Power supply, bracket installation kit, 1 DVI/DVI male to male cable
OPTIONS: RK-3T 19” rack adapter
1 Specifications are subject to change without notice

KRAMER: SIMPLE CREATIVE TECHNOLOGY
12
LIMITED WARRANTY
WHOISPROTECTED?
WHATISCOVEREDANDWHATISNOTCOVERED
WHATWE WILLPAYFORANDWHATWEWILLNOT PAYFOR
HOW YOU CAN GET WARRANTY SERVICE
LIMITATIONOFIMPLIEDWARRANTIES
EXCLUSIONOFDAMAGES
CAUTION!
Kramer Electronics (hereafter ) warrants this product free from defects in material and workmanship under the
followingterms.
Kramer
HOWLONGISTHE WARRANTY
Labor and parts are warranted for three years from the date of the first customer purchase.
Only the first purchase customer may enforce this warranty.
Wewillpaylaborandmaterialexpensesforcovered items.Wewill notpayforthefollowing:
The liability of Kramer for any effective productsis limited to the repair or replacement of the product at our option. Kramer shall
notbeliablefor:
Thiswarranty gives you specific legal rights, and you may alsohave other rights, which varyfrom place toplace.
Allproducts returned toKramer forservice must have prior approval.Thismay be obtained fromyour dealer.
This equipment has been testedto determine compliance with the requirements of:
EN-50081: "Electromagneticcompatibility(EMC);
genericemissionstandard.
Residential,commercialandlightindustry"
EN-50082: "Electromagnetic compatibility(EMC)genericimmunitystandard.
Part 1: Residential, commercialand lightindustry 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 thewarranty:
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 malfunctionresulting from:
i) Accident,misuse,abuse,neglect,fire, water,lightningorotheractsof nature
ii) Productmodification,orfailuretofollowinstructionssuppliedwiththeproduct
iii) RepairorattemptedrepairbyanyonenotauthorizedbyKramer
iv) Anyshipmentoftheproduct(claimsmustbepresentedtothecarrier)
v) Removalorinstallationoftheproduct
vi) Any other cause, which does not relate to a product defect
vii) Cartons,equipmentenclosures,cablesoraccessoriesusedinconjunctionwiththeproduct
1. Removal or installations charges.
2. Costs of initial technical adjustments (set-up), including adjustment of user controls or programming. These costs are the
responsibilityoftheKramerdealerfromwhomtheproductwaspurchased.
3. Shippingcharges.
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 basedupon inconvenience, loss of use of the product, loss
oftime,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
limitationsandexclusionsmaynotapplytoyou.
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 suppliedDCpowersupply to feed power to the machine.
Pleaseuserecommended interconnection cables toconnect themachine toother components.
IF reattached, removed or otherwise interfered with.
*FCCandCEapprovedusingSTPcable(fortwistedpairproducts)
NOTE:
Part1:

Kramer Electronics, Ltd.
Web site: www.kramerelectronics.com
E-mail: [e-mail]
P/N: 2900-000103 REV 6
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.
Class 1 Laser Compliance
CLASS 1 LASER PRODUCT
Thisproduct complieswith “21CFR1040.10”and“EN 60825-1”.