712N - Extendeur AV Kramer - Free user manual and instructions

Product Type	AV Extender
Brand	Kramer
Model	712N
Dimensions (H x W x D)	4.4 cm x 21.0 cm x 16.0 cm (1.7" x 8.3" x 6.3")
Weight	0.7 kg (1.5 lbs)
Power Supply	12V DC, 500mA (included)
Power Consumption	6W max
Video Input	1x VGA (HD-15) Female
Video Output	1x RJ-45 (CAT5/6)
Audio Input	1x 3.5mm Mini Jack
Audio Output	Embedded on RJ-45
Max Resolution	1920x1200 @ 60Hz
Transmission Distance	Up to 100m (330 ft) via CAT5/6
Material	Metal enclosure
Operating Temperature	0°C to 40°C (32°F to 104°F)
Storage Temperature	-20°C to 60°C (-4°F to 140°F)
Functions	Extends VGA video and audio over a single CAT5 cable; supports EDID pass-through; includes equalization control
Maintenance & Cleaning	Disconnect power before cleaning. Use a soft, dry cloth. Do not use liquid or aerosol cleaners.
Safety	Do not expose to rain or moisture. Use only the provided power adapter. Avoid mechanical stress on cables.
Spare Parts & Repairability	No user-serviceable parts inside. Contact Kramer support for repairs or replacement.
General Information	Designed for professional AV installations. Compatible with Kramer and third-party products.

Frequently Asked Questions - 712N Kramer

How do I connect the Kramer 712N extender?

Connect the VGA source to the input port on the transmitter unit. Use a CAT5/6 cable to link the transmitter to the receiver. Then connect the display to the receiver's VGA output. Power both units with the included 12V adapters.

What is the maximum distance supported?

The Kramer 712N supports transmission up to 100 meters (330 feet) using a single CAT5/6 cable for both video and audio.

Does the 712N support audio?

Yes, the transmitter has a 3.5mm audio input, which is embedded with the video signal over the CAT5 cable. The receiver outputs the audio via its own 3.5mm jack.

What resolutions are supported?

The extender supports resolutions up to 1920x1200 @ 60Hz, including standard VGA, SVGA, XGA, and WUXGA.

Can I use a CAT6 cable instead of CAT5?

Yes, CAT6 cable is fully compatible and may offer improved performance over longer distances, though CAT5 is sufficient for up to 100m.

How do I adjust the picture quality?

The receiver unit has an equalization control (usually a small potentiometer) to compensate for cable length and signal degradation. Adjust it while observing the display for optimal clarity.

Is the Kramer 712N compatible with other Kramer extenders?

The 712N is designed to work as a pair (transmitter and receiver). Using a different model may cause compatibility issues. Always use matched units.

What should I do if there is no picture?

Check all cable connections: ensure VGA cables are fully inserted, CAT5 cable is correctly terminated (straight-through), and both units are powered on. Verify that the source output resolution is supported. Also, try adjusting the equalization control.

Can I extend the cable beyond 100 meters?

The specified maximum is 100 meters. Exceeding this may result in signal loss or degradation. For longer distances, use a signal booster or a different extender model.

How to clean and maintain the 712N?

Disconnect power before cleaning. Use a soft, dry cloth to wipe the enclosure. Do not use chemicals or abrasive materials. Avoid moisture ingress into the vents.

USER MANUAL 712N Kramer

Video-Audio Line Receiver

711N/712N Quick Start Guide

This page guides you through a basic installation and first-time use of your 711N, 712N. For more detailed information, see the 711N, 712N user manual. You can download the latest manual at http://www.kramerelectronics.com.

Step 1: Check what's in the box

The 711N, 712N

1 power adapter (12V DC)

1 Quick Start sheet

1 User Manual

Illustration of a yellow cardboard box with a black 'K' logo on the front panel (no text or symbols on the box itself)

Save the original box and packaging materials in case your Kramer product needs to be returned to the factory for service.

Step 2: Install the 711N/712N

Place the units on a table or mount the machines in a rack (using the RK-T1 or RK-T3 rack adapter).

Step 3: Connect the inputs and outputs

Always switch off the power on each device before connecting it to your 711N, 712N.

graph LR
    A["VIDEO IN"] -->|CV Player| B["711N"]
    C["LINE OUT"] -->|711N| B
    D["AUDIO IN"] -->|711N| B
    E["LEFT"] -->|711N| F["712N"]
    G["RIGHT"] -->|711N| F
    H["12V DC"] -->|711N| F
    I["VIDEO OUT"] --> J["712N"]
    K["LINE LOOP"] --> J
    L["LINE IN"] --> M["712N"]
    N["AUDIO OUT"] --> O["712N"]
    P["Stereo Amplifier"] --> Q["712N"]
    R["CAT 5"] --> S["712N"]
    T["CV Display"] --> U["Next 712N"]

For best results, we recommend that you always use Kramer high-performance cables to connect AV equipment to the 711N, 712N.

Step 4: Connect the power

Connect the 12V DC power adapter(s) to the 711N and/or 712N and plug the adapter(s) into the mains electricity.

Step 5: Operate the 711N, 712N

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.

Contents

1 Introduction 1
2 Getting Started 2
2.1 Achieving the Best Performance 2
3 Overview 3
3.1 About the Power Connect Feature 3
3.2 Shielded Twisted Pair (STP) / Unshielded Twisted Pair (UTP) 4
4 Defining 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
5 Connecting the 711N and the 712N 7
5.1 Wiring the CAT 5 LINE IN / LINE OUT RJ-45 Connectors 9
6 Technical 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

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 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

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

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.

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 RIGHT RCA	LEFT RCA connector	Connect to the left unbalanced stereo audio source
4		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

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 RCA	LEFT RCA Connector	Connect to the left unbalanced stereo audio acceptor
5		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 levelInsert 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

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.

graph TD
    A["711N"] -->|CV| B["Composite Video Player"]
    C["712N"] -->|CV| D["Display"]
    B -->|Audio| C
    D -->|Audio| C
    B --> E["Amplifier"]
    C --> E
    style A fill:#f9f,stroke:#333
    style C fill:#ccf,stroke:#333
    style B fill:#cfc,stroke:#333
    style D fill:#fcc,stroke:#333
    style E fill:#cff,stroke:#333

Figure 3: Connecting the Video-Audio Line Transmitter / Receiver System

5.1 Wiring the CAT 5 LINE IN / LINE OUT RJ-45 Connectors

Figure 4 defines the UTP CAT 5 PINOUT, using a straight pin to pin cable with RJ-45 connectors:

Feature 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 4: CAT 5 PINOUT

6 Technical Specifications

	711N 712N
INPUT: 1 composite video	1Vpp/75Ω, on a BNC connector; 1 stereo unbalanced audio 4dBm/50kΩ, on two RCA connectors	1 RJ-45 CAT-5 shielded connector (LINE IN)
OUTPUT:	1 RJ-45 CAT-5 shielded connector (LINE OUT)	1 composite video 1Vpp/75Ω, on a BNC connector; 1 stereo unbalanced audio 4dBm/50kΩ, on two RCA connectors
VIDEO MAX. SIGNAL LEVEL: 2.8Vpp
AUDIO MAX. SIGNAL LEVEL: 7.6Vpp
VIDEO BANDWIDTH (-3dB): 85MHz
AUDIO BANDWIDTH (-3dB):	>100kHz
DIFF. GAIN: 0.04%
DIFF. PHASE: 0.25Deg.
K-FACTOR: 0.1%
VIDEO S/N RATIO: 75dB
AUDIO S/N RATIO: 77dB
AUDIO CROSSTALK (all hostile) -53dB @ 5MHz, video into audio
CONTROLS		LEVEL: -1.3dB to +6.3dB EQ @ 30MHz: 0dB to +3.7dB
VIDEO COUPLING:	DC
AUDIO COUPLING:	Input: AC; line output: DC	DC for both line input and output
AUDIO THD + NOISE:	0.026%, 1kHz
AUDIO 2nd HARMONIC:	0.001% @ 1kHz
POWER SOURCE:	12V DC 50mA, when 712N is fed by an independent 12V supply; 135mA when feeding 712N	12V DC 45mA, when 711N is fed by an independent 12V supply
OPERATING TEMPERATURE:	0° to +55°C (32° to 131°F)
STORAGE TEMPERATURE:	-45° to +72°C (-49° to 162°F)
HUMIDITY:	10% to 90%, RHL non-condensing
DIMENSIONS:	12cm x 7.15cm x 2.76cm (4.7" x 2.8" x 1.08"), W, D, H
WEIGHT:	0.3 kg. (0.67 lbs.) approx. (each)
ACCESSORIES:	Power supply, mounting bracket (each)
OPTIONS:	RK-T1, RK-T3, 19 inch rack adapters
Specifications are subject to change without notice For the most updated resolution list, go to our Web site at http://www.kramerelectronics.com

LIMITED WARRANTY

We warrant this product free from defects in material and workmanship under the following terms.

HOW LONG IS THE WARRANTY

Labor and parts are warranted for seven years from the date of the first customer purchase.

WHO IS PROTECTED?

Only the first purchase customer may enforce this warranty.

WHAT IS COVERED AND WHAT IS NOT COVERED

Except as below, this warranty covers all defects in material or workmanship in this product. The following are no covered by the warranty:

1. Any product which is not distributed by us 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 IF TA##ERED, disinvolved as otherwise, interfered with.
3. Damage, deterioration or malfunction resulting from:

i) Accident, misuse, abuse, neglect, fire, water, lightning or other acts of nature
ii) Product modification, or failure to follow instructions supplied with the product
iii) Repair or attempted repair by anyone not authorized by Kramer
iv) Any shipment of the product (claims must be presented to the carrier)
v) Removal or installation of the product
vi) Any other cause, which does not relate to a product defect
vii) Cartons, equipment enclosures, cables or accessories used in conjunction with the product

WHAT WE WILL PAY FOR AND WHAT WE WILL NOT PAY FOR

We will pay labor and material expenses for covered items. We will not pay for the following:

1. Removal or installations charges.
2. Costs of initial technical adjustments (set-up), including adjustment of user controls or programming. These costs are the responsibility of the Kramer dealer from whom the product was purchased.
3. Shipping charges.

HOW YOU CAN GET WARRANTY SERVICE

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.

LIMITATION OF IMPLIED WARRANTIES

All implied warranties, including warranties of merchantability and fitness for a particular purpose, are limited in duration to the length of this warranty.

EXCLUSION OF DAMAGES

The liability of Kramer for any effective products is limited to the repair or replacement of the product at our option. Kramer shall not be liable for:

1. Damage to other property caused by defects in this product, damages based upon inconvenience, loss of use of the product, loss of time, commercial loss; 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 limitations and exclusions may not apply to you.

This warranty gives you specific legal rights, and you may also have other rights, which vary from place to place.

NOTE: All products returned to Kramer for service must have prior approval. This may be obtained from your dealer.

This equipment has been tested to determine compliance with the requirements of:

EN-50081: "Electromagnetic compatibility (EMC);

generic emission standard.

Residential, commercial and light industry"

EN-50082: "Electromagnetic compatibility (EMC) generic immunity standard.

Part 1: Residential, commercial and light industry environment".

CFR-47: FCC* Rules and Regulations:

Part 15: "Radio frequency devices

Subpart B Unintentional radiators"

CAUTION!

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 supplied DC power supply to feed power to the machine.
Please use recommended interconnection cables to connect the machine to other components.

* FCC and CE approved using STP cable (for twisted pair products)

For the latest information on our products and a list of Kramer distributors, visit our Web site where updates to this user manual may be found.

We welcome your questions, comments, and feedback.

Web site: www.kramerelectronics.com

E-mail: [e-mail]

SAFETY WARNING

Disconnect the unit from the power supply before opening and servicing