KRAMER ELECTRONICS, Ltd. USER MANUAL Vertical Interval Switcher Model: VS-4X4YC IMPORTANT: Before proceeding, please read paragraph entitled "Unpacking and Contents" KRAMER ELECTRONICS, LTD.
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Table Of Contents Section 1 1.1 1.2 2 3 4 4.1 5 6 7 8 9 9.1 10 11 12 12.1 12.2 12.2.1 12.3 13 13.1 14 15 15.1 15.2 15.3 15.
1. INTRODUCTION Congratulations on your purchase of this Kramer switcher. Since 1981 Kramer has been dedicated to the development and manufacture of high quality video/audio equipment. The Kramer industrial line has become an integral part of many of the best video/audio production and presentation facilities around the world. In recent years, Kramer has redesigned and upgraded most of the industrial line, making the best even better.
2. SPECIFICATIONS VS-4x4YC 4x4 Composite Video - Y/C - Audio Stereo Vertical Interval Matrix Function 4 video, 1Vpp/75 Ω Composite on BNCs, Inputs 4 Y/C - Y=1Vpp/75 Ω, C=0.3Vpp/ 75 Ω 4 stereo audio1Vpp/ 50kΩ on RCAs. 4 video, 1Vpp/75 Ω Composite on BNCs, Outputs Video S/N Ratio 4 Y/C - Y=1Vpp/75 Ω, C=0.3Vpp/ 75 Ω 4 stereo audio1Vpp/ 100Ω on RCAs. >65 dB Audio S/N Ratio >75 dB Video Bandwidth >50MHz (-3dB) Audio Bandwidth 10-100000 Hz (-3dB) Audio THD <0.1% Differential Gain 0.
4.1 Optional Accessories The following accessories, which are available from Kramer, can enhance implementation of your switcher. For information regarding cables and additional accessories, contact your Kramer dealer. BNC "Y" Connector - Used for looping purposes and splits the incoming signal to connect an additional machine.
5. KRAMER VS-4X4YC MATRIX This section shows you all of the controls and connections of your switcher. Understanding all of the controls and connections helps you realize its full power. The switcher described in this manual is equipped with an RS-232 connector (for PC control) and the connector wiring is described later on. The Kramer VS-4x4YC is a high performance 4x4 vertical interval matrix switcher for composite and/or s-Video and stereo audio signals.
The "video sync signals" of input position "1" are used by the VS-4x4YC as the basic reference for the timing of the vertical interval switching. Back Panel: Video Inputs A variety of Super-Video / Composite input sources may be used such as videocassette recorders and cameras. Audio Inputs Up to four stereo-audio input sources can be connected to the VS-4x4YC. Audio sources can be the audio section of the video equipment used, or another audio source such as a tape recorder.
12. USING the VS-4X4YC 12.1 Turning on the Matrix The matrix should only be turned on after all connections are completed, and all source devices have been turned on. Do not attempt to connect or disconnect any video, audio or control signals to the switcher while it is turned on. Pressing the toggle switch on the far-left front panel to the up position . turns on the matrix. In the up position, the toggle switch glows. 12.
13. RS-232 CONTROL 1. 2. 3. 4. 5. To control the VS-4x4YC using RS-232, connect the "9 pin to 9 pin adapter" (provided with the machine) to the 9 pin serial port of the PC. Use a flat cable to connect from the 9 pin of the VS4x4YC to the 9 pin of the adapter. (The adapter is a nu11-modem plug and 9-pin to 9-pin converter - see diagram below). The DOS based PC program may be downloaded from the Internet at the Kramer Website / Technical support section. The website address is: www.kramerelectronics.com .
KRAMER ELECTRONICS, LTD.
14. TAKING CARE OF YOUR MATRIX Do not locate your matrix in an environment where it is susceptible to dust or moisture. Both of these may damage the electronics, and cause erratic operation or failure. Do not locate your switcher where temperature and humidity may be excessive. Doing so may also damage the electronics, and cause erratic operation or failure of your switcher. Do not clean your switcher with abrasives or strong cleaners.
Problem Noise bars “roll” up or down in the output image or: Remedy 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! Low frequency hum in the output signal Check the following to remove hum bars: 1.
LIMITED WARRANTY Kramer Electronics (hereafter Kramer) warrants this product 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.
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 Kramer’s liability for any defective products is limited to the repair or replacement of the product at our option.
The list of Kramer distributors appears on our web site: www.kramerelectronics.com From the web site it is also possible to e-mail factory headquarters. We welcome your questions, comments and feedback. KRAMER ELECTRONICS, LTD. 3 Am VeOlamo Street. Jerusalem 95463, Israel Tel: (972-2)-654-4000. Fax: (972-2)-653-5369 E-mail: kramerel@netvision.net.
