KRAMER ELECTRONICS, Ltd. USER MANUAL Video/Audio Distribution Amplifiers Models: VM-3S/ VM-3Sxl VM-3V/ VM-3Vxl IMPORTANT: Before proceeding, please read paragraph entitled "Unpacking and Contents" KRAMER ELECTRONICS LTD.
Table Of Contents Section Name Page INTRODUCTION A Word On Distribution Amplifiers Factors Affecting Quality of Results SPECIFICATIONS HOW DO I GET STARTED UNPACKING AND CONTENTS Optional Accessories VM SERIES AMPLIFIERS Getting To Know Your VM-3S/xl Amplifier Getting To Know Your VM-3V/xl Amplifier INSTALLATION CONNECTING TO VIDEO DEVICES USING VM VIDEO/AUDIO AMPLIFIERS Turning on the Amplifier Coupling Installing a VM Amplifier in a Video System TAKING CARE OF YOUR VIDEO AMPLIFIER TROUBLESHOOTING Power
1. INTRODUCTION Congratulations on your purchase of this Kramer Electronics amplifier. Since 1981 Kramer has been dedicated to the development and manufacture of high quality video/audio equipment. The Kramer line has become an integral part of many of the best production and presentation facilities around the world. In recent years, Kramer has redesigned and upgraded most of the line, making the best even better.
2. SPECIFICATIONS VM-3S / VM-3Sxl VM-3V / VM-3Vxl Function 1:3 s-Video DA 1:3 Composite/Single Component Video DA Input 1 s-Video, 1Vpp/75ohm (Y), 0.3Vpp/75ohm (C) on a 4P connector 1 Composite Video, 1Vpp/75ohm, on a BNC connector Output Type 3 s-Video, 1Vpp/75ohm (Y), 0.
3. HOW DO I GET STARTED? The fastest way to get started is to take your time and do everything right the first time. Taking 15 minutes to read the manual may save you a few hours later. You don’t even have to read the whole manual. If a section doesn’t apply to you, you don’t have to spend your time reading it. 4. UNPACKING AND CONTENTS The items contained in your Kramer VM amplifier packaging are listed below. Please save the original box and packaging materials for possible future shipment.
VS-4E - (A Precision Mechanical 4x4 Video/Audio Switcher) Several video/audio sources may be connected to its inputs for switching. The machine may be used in every application where easy and fast video and audio source selection is needed and for high isolation between inputs. All unselected inputs are internally terminated with 75-Ohm resistors. The VM-4E switches Video, SDI and any other high frequency signals. The VM-4E is housed in a small enclosure, occupying very little desk space.
5. VM SERIES AMPLIFIERS This section describes all the controls and connections of your amplifier. Understanding the controls and connections helps you realize its full power. 5.1 Getting To Know Your VM-3S/xl Amplifier The KRAMER VM-3S/xl is a full bandwidth, state-of-the-art, 1:3 s-Video distribution amplifier designed for studio and other demanding applications. The VM-3S/xl splits a single input source into three identical outputs with no discernible signal degradation.
Getting To Know Your VM-3V/xl Amplifier 5.2 The KRAMER VM-3V/xl is a full bandwidth, state-of-the-art, 1:3 video distribution amplifier designed for studio and other demanding applications. The VM-3V/xl splits a single input source into three identical outputs with no discernible signal degradation. Video output and input signals are AC coupled for maximal flexibility. The VM-3V/xl receives external 12V DC feed, and is housed in a very compact enclosure, making it ideal for field use.
6. INSTALLATION The amplifier is provided with four rubber feet packed in a separate bag. Fit the feet to the unit, place it on the table remote from heat generating sources and make the required connections. 7. CONNECTING TO VIDEO DEVICES Video sources and output devices (such as amplifiers or recorders) may be connected to the amplifier through the BNC connectors (VM-3V model) or 4p type connectors (VM-3S model) located at the back of the machine.
NOTE Do not use excessively long cables if possible, as signal quality may degrade rapidly. Figure 3: Installing a VM Amplifier in a Video System KRAMER ELECTRONICS LTD.
9. TAKING CARE OF YOUR VIDEO AMPLIFIER Do not locate your amplifier in an environment where it is susceptible to dust or moisture. These may damage the electronics, and cause erratic operation or failure. Do not locate your amplifier where temperature and humidity may be excessive. Do not clean your amplifier with abrasives or strong cleaners. Doing so may remove or damage the finish, or may allow moisture to build up. Take care not to allow dust or particles to build up inside unused or open connectors.
Problem Remedy Noise bars "roll" up or down in the output image or: Low frequency hum in the output signal Hum bars (ground loop) are caused by a difference in the ground potential of any two or more devices connected to your signal path. This difference is compensated by passing that voltage difference through any available interconnection, including your video cables. WARNING! Do not disconnect the ground from any piece of video equipment in your signal path! Check the following to remove hum bars: 1.
LIMITED WARRANTY Kramer Electronics (hereafter Kramer) warrants this product to be free from defects in material and workmanship under the following terms. HOW LONG IS THE WARRANTY Labor and parts are warranted for three 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.
EXCLUSION OF DAMAGES Kramer’s liability for any defective 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.
For the latest information on our products and a list of Kramer distributors, visit our Web site: www.kramerelectronics.com. Updates to this user manual may be found at http://www.kramerelectronics.com/manuals.html. We welcome your questions, comments and feedback. Kramer Electronics, Ltd. Web site: www.kramerelectronics.com E-mail: info@kramerel.
