Kramer 621R User manual

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

Contents
i
Contents
1 Introduction 1
2 Getting Started 1
2.1 Quick Start 2
3 Overview 3
3.1 Power Connect Feature 4
3.2 Shielded Twisted Pair (STP) / Unshielded Twisted Pair (UTP) 4
4 Your DVI Optical Transmitter/ Receiver 4
4.1 Your 621T DVI Optical Transmitter 5
4.2 Your 621R DVI Optical Receiver 6
5 Using 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 10
5.3 Wiring the CAT 5 LINE IN / LINE OUT RJ-45 Connectors 10
6 Technical 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): 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 Groups
1
, which are clearly defined by function.
Congratulations on 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)
2
and this user manual
3
The 621R package includes the following items:
621R DVI Optical Receiver
Power adapter (12V DC 1.25A Input)
2
and this user manual
3
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 cables
4
. Note that the units are
designed for use with MULTI-MODE optical cables.
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 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 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 EDID
1
/HDCP
2
parameters over
DDC
3
(UTP) cabling.
In particular, the 621T/621R pair:
Provides a single-link DVI connection, supporting a resolution of up
to 1600x1200 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/HDCP
2
interconnection 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
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
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 over the same CAT5 cable.
The Power Connect feature applies as long as the CAT5 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 CAT5
cable.
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.
It is recommended that in applications with high interference, shielded twisted
pair (STP) cable will give better results. 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.
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 CL R
6 Optic Cables G B Connect to the optic connectors on the 621R
7 DDC CAT5 Connector Connects
1
to the DDC RJ-45 connector on the 621R
4.2 Your 621R DVI Optical Receiver
Figure 3, Figure 4 and Table 2 define the 621R DVI 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 R CL
6 Optic Cables B G Connect to the optic connectors on the 621T
7 DDC CAT5 Connector Connects
1
to 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 connect
1
the 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 box
2
) 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 or
1
the 621R and connect the adapter to the mains electricity (not shown).
7. Turn the power on the source and the display to ON.
621T
621R
Plasma
Display
Host
Computer
Figure 6: Connecting the 621T/621R DVI Optical Transmitter/Receiver
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
5.2 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
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:
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
Figure 7: CAT 5 PINOUT
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 Specifications
1
of the 621T/621R
621T 621R
INPUTS: DVI IN
OUTPUTS: DVI OUT
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
1 Specifications are subject to change without notice

KRAMER: SIMPLE CREATIVE TECHNOLOGY
12

Kramer Electronics, Ltd.
Web site: www.kramerelectronics.com
E-mail: [email protected]
P/N: 2900-000103 REV 3
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
This product complies with “21 CFR 1040.10” and “EN 60825-1”.