Kramer 711N Manuale utente

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 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

711N, 712N - Overview 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

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

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

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)

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

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.

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