Kramer 711N User manual

KRAMER ELECTRONICS LTD.
USER MANUAL
MODELS:
711N
Video-Audio Line Transmitter
712N
Video-Audio Line Receiver
P/N: 2900-000162 Rev 2

711N, 712N – Contents i
Contents
1Introduction 1
2Getting Started 2
2.1 Achieving the Best Performance 2
3Overview 3
3.1 About the Power Connect Feature 3
3.2 Shielded Twisted Pair (STP) / Unshielded Twisted Pair (UTP) 4
4Defining the 711N/712N Video-Audio Line Transmitter/Receiver 5
4.1 Your 711N Video-Audio Line Transmitter 5
4.2 Your 712N Video-Audio Line Receiver 6
5Connecting the 711N and the 712N 7
5.1 Wiring the CAT 5 LINE IN / LINE OUT RJ-45 Connectors 9
6Technical Specifications 10
Figures
Figure 1: 711N Video-Audio Line Transmitter 5
Figure 2: 712N Video-Audio Line Receiver 6
Figure 3: Connecting the Video-Audio Line Transmitter / Receiver System 8
Figure 4: CAT 5 PINOUT 9

711N, 712N - 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 groups that are clearly defined by
function: 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; and
GROUP 11: Sierra Products.
Congratulations on purchasing your Kramer 711N, Video-Audio Line Transmitter
and/or 712N, Video-Audio Line Receiver, which are ideal for the following typical
applications:
•Remote monitoring for CCTV, medical, school and broadcast applications
•Existing facilities with TP cable already installed
•Teleconferencing in offices and hospitals using existing intercom or telephone
wiring

2 711N, 712N - Getting Started
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 cables
•Use only the power cord that is supplied with this machine
Go to http://www.kramerelectronics.com to check for up-to-date user
manuals, application programs, and to check if firmware upgrades
are available (where appropriate).
2.1 Achieving the Best Performance
To achieve the best performance:
•Use only good quality connection cables to avoid 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 that may adversely
influence signal quality
•Position your Kramer products away from moisture, excessive sunlight and
dust
Caution: No operator serviceable parts inside the unit
Warning: Use only the Kramer Electronics input power wall
adapter that is provided with the unit
Warning: Disconnect the power and unplug the unit from the wall
before installing
i
!

711N, 712N - Overview 3
3
3 Overview
The 711N and 712N are a twisted pair transmitter and receiver for composite video
and unbalanced stereo audio signals. The 711N transmitter converts composite
video and stereo audio to a twisted pair signal and the 712N receiver converts the
twisted pair signal back into composite video and stereo audio signals.
The 711N/712N feature:
•A maximum bandwidth of 85MHz
•LINE IN, LINE LOOP and LINE OUT on RJ-45 connectors
The 712N LINE IN can be looped to add an additional output and includes a selectable
input signal termination push button
•A system range of up to 400 meters (1200 feet)
•Level (GAIN) and equalization (EQ) controls (on the 712N)
The 711N/712N are part of the Kramer TOOLS™ family of compact high-quality
and cost effective solutions, and are fed from an external 12V DC source, making
them suitable for field operation.
3.1 About the 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.
For units which are connected via RJ-45 connectors, make sure that the shield of
the STP cable is connected to the metal casing of the connectors on both ends of
the cable. For units which are connected via terminal block connectors, the shield
of the STP cable must be connected to a ground terminal on the units at both ends
(use the ground terminal of the power supply connection if necessary).
For a CAT 5 cable exceeding a distance of 50m, separate power supplies should
be connected to the transmitter and to the receiver simultaneously.
CAT 5 cable is still suitable for the video/audio transmission, but not for feeding the power at
these distances

4 711N, 712N - Overview
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 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.

711N, 712N - Defining the 711N/712N Video-Audio Line Transmitter/Receiver 5
5
4 Defining the 711N/712N Video-Audio Line
Transmitter/Receiver
This section defines the:
•711N Video-Audio Line Transmitter (see Section 4.1)
•712N Video-Audio Line Receiver (see Section 4.2)
4.1 Your 711N Video-Audio Line Transmitter
Figure 1 defines the 711N Video-Audio Line Transmitter:
Figure 1: 711N Video-Audio Line Transmitter
#
Feature
Function
1 VIDEO IN BNC Connector Connect to composite video source
2 LINE OUT CAT 5 Connector Connect to the LINE IN RJ-45 connector on the 712N
3
AUDIO IN
LEFT RCA
connector
Connect to the left unbalanced stereo audio source
4 RIGHT RCA
Connector
Connect to the right unbalanced stereo audio source
5 12V DC +12V DC connector for powering the unit
6 ON LED Lights when receiving power from the 712N, or directly
from the power adapter

6 711N, 712N - Defining the 711N/712N Video-Audio Line Transmitter/Receiver
4.2 Your 712N Video-Audio Line Receiver
Figure 2 defines the 712N Video-Audio Line Receiver:
Figure 2: 712N Video-Audio Line Receiver
#
Feature
Function
1 VIDEO OUT BNC Connector Connect to the composite video acceptor
2 LINE LOOP CAT 5 Connector Connect to the LINE IN RJ-45 connector of an
additional receiver to increase the number of
outputs
3 LINE IN CAT 5 Connector Connect to the LINE OUT RJ-45 connector of the
711N
4
AUDIO
OUT
LEFT RCA
Connector
Connect to the left unbalanced stereo audio
acceptor
5 RIGHT RCA
Connector
Connect to the right unbalanced stereo audio
acceptor
6 12V DC +12V DC connector for powering the unit
7 AUDIO
LEVEL
LEFT Trimmer Turn to adjust the left audio signal level
8 RIGHT Trimmer Turn to adjust the right audio signal level
9 LOOP TERM Push Button When pressed in, terminates unit (not looped)
10
VIDEO
GAIN Trimmer Turn to adjust the output video signal level
Insert a screwdriver into the hole and carefully rotate it, to
trim the level
11 EQ. Trimmer Turn to adjust the output video signal equalization
12 ON LED Lights when receiving power

711N, 712N - Connecting the 711N and the 712N 7
7
5 Connecting the 711N and the 712N
Always switch off the power to each device before connecting it to your
711N/712N. After connecting your 711N/712N, connect its power and
then switch on the power to each device.
You can use the 711N and 712N to configure a Video-Audio Transmitter and Receiver
system.
To connect the 711N Video-Audio Line Transmitter with the 712N Video-Audio Line
Receiver, as illustrated in the example in Figure 3, do the following:
1. Connect a composite video source (for example, a composite video player) to
the VIDEO IN BNC connector on the 711N, and connect an unbalanced
stereo audio source to the AUDIO IN RIGHT and LEFT RCA connectors.
2. On the 712N, connect the VIDEO OUT BNC connector to a composite video
acceptor (for example, a display).
3. Connect the LINE OUT connector of the 711N to the LINE IN connector of
the 712N, via UTP cabling.
4. If an additional output is required, connect the LINE LOOP connector on the
712N to the LINE IN connector of an additional 712N unit, via UTP cabling.
By connecting the LINE LOOP connector of the additional 712N to the LINE IN
connector of a third 712N, you can further increase the number of outputs
5. On each 711N / 712N unit, connect a 12V DC power adapter to the power
socket and connect the adapter to the mains electricity.
See section 3.1 for the power connect feature
6. If required, on the 712N, adjust the VIDEO GAIN and EQ. levels, by inserting
a screwdriver into each of the small holes and carefully rotating them.
i