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