Kramer Electronics, Ltd. USER MANUAL Line Amplifiers Models: VM-9S, VM-9YC and Kramer Tools Models: 103YC, 104L IMPORTANT: Before proceeding, please read paragraph entitled "Unpacking and Contents" KRAMER ELECTRONICS, LTD.
Table of Contents Section . . . .
1 INTRODUCTION Congratulations on your purchase of this Kramer Electronics line 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 Configuration Input Outputs Output Coupling S/N Ratio Video Bandwidth Audio Bandwidth Differential Gain Differential Phase K-Factor THD (1kHz) Max. Video Output Level Control Dimensions (W, D, H) Weight Power Source VM-9S VM-9YC 103YC 1:2 1 video, 1Vpp/75 ohm on a BNC looping with a termination switch 1 stereo audio, 1Vpp/25kohm, on RCAs, looping 2 video, 1Vpp/75ohm on BNCs, 2 stereo audio 1Vpp/100ohm on RCAs 1:2 1 Y/C, 1Vpp/75 ohm, (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 Line Amplifier package are listed below.
5 LINE AMPLIFIERS This section describes all the controls and connections of your line amplifier. Understanding the controls and connections helps you realize the full power of your line amplifier. 5.1 Getting to Know Your VM-9S Amplifier The KRAMER VM-9S Video/Audio Line Amplifier is a high quality amplifier which compensates for video and audio signal losses when long cables are used.
5.2 Getting to Know Your VM-9YC Amplifier The KRAMER VM-9YC Y/C Line amplifier is a high quality amplifier which compensates for Y (Luma) and C (Chroma) signal losses when long cables are used. In any video setup requiring considerable distances between video source and acceptors, signal loss and thus depreciation in the quality of picture-becomes a real problem.
5.3 Getting to Know Your 103YC line Amplifier The Kramer 103YC is a high performance line amplifier which combines the functions of a distribution amplifier and line driver. It accepts a single S-video (Y/C) input and provides three identical buffered outputs that are affected by gain and equalization controls located on the top panel. The gain and equalization controls are designed to compensate for signal loss inherent in long cable runs.
5.4 Getting to Know Your 104L line Amplifier The 104L is a high performance line amplifier, which combines the functions of a distribution amplifier and line driver. It accepts a single composite video input and provides four identical buffered outputs, which are affected by gain and equalization controls located on the top panel. The gain and equalization controls are designed to compensate for signal loss inherent in long cable runs. The gain control adjusts the overall signal level, and the EQ.
6 INSTALLATION 6.1 Rack/Table Mounting The VM-9S and the VM-9YC amplifiers may be rack mounted in a standard 19” (1U) EIA rack assembly using special adapters (see section 4.1 "mechanical adapters"). These adapters allow 1or 2 machines to be installed on each adapter, depending on the model. The 103YC and the 104L can be table mounted using the two brackets enclosed in the box or installed in rack adapters that can accommodate 3 or 8 machines.
9.3 C Phase Control (VM-9YC only) When long cables are used in any video setup, phase shift occurs due to stray capacitance and inductance as well as for other cable related reasons, resulting in signal distortion and thus depreciation in the quality of picture. The colors may be wrong and the color information may be delayed more than the black and white information, causing a "misprinted" image.
incoming video signal, an oscilloscope should be connected to amplifier’s output and the Gain/Level trimmer/knob adjusted until a satisfactory sync level and hence proper picture are achieved. 9.9 Typical Line Amplifier Setup Figure 4 illustrates a typical setup of the line amplifiers described in this manual. Perform the following steps: 1) Connect the output of the video source to the inputs of a line amplifier (VM-9S in the example).
10 TAKING CARE OF YOUR LINE AMPLIFIER Do not locate your line 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 line amplifier where temperature and humidity may be excessive. Do not clean your line amplifier with abrasives or strong cleaners. Doing so may remove or damage the finish, or may allow moisture to build up.
11.2 Video Signal Problem No video at the output device Remedy 1. 2. 3. Video level is too high or too dim. Noise bars "roll" up or down in the output image or: Low frequency hum in the output signal 1. 2. 3. Confirm that your source and output devices are powered on and connected properly. The input of your amplifier should be of an identical signal format at the output of your source. Signals at the output of your amplifier should be of an identical signal format as at the input of your display.
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.
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.
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.
