Kramer Electronics, Ltd.
Contents Contents 1 2 3 4 4.1 4.
ADDENDUM (this data is included at the end of the Overview section) This addendum adds the following information to the user manual: Caution – No operator-serviceable parts inside unit. Warning – Use only the Kramer Electronics input power wall adapter that is provided with this unit1. Warning – Disconnect power and unplug unit from wall before installing or removing device or servicing unit.
Introduction 1 Introduction Welcome to Kramer Electronics (since 1981): a world of unique, creative and affordable solutions to the infinite range of problems that confront the video, audio and presentation professional on a daily basis. In recent years, we have redesigned and upgraded most of our line, making the best even better! Our 350-plus different models now appear in 8 Groups1, which are clearly defined by function. Congratulations on purchasing your Kramer VM-25 1:25 Video Distribution Amplifier.
Overview In particular, the VM-25: Includes a looping connector for connecting to a local monitor, other acceptor, or for forming larger systems1 Has a video bandwidth of more than 430MHZ, ensuring transparent performance with typical video sources Has front panel video trimmer controls2 for output level (LEVEL) and cable equalization (EQ.
Figure 1: VM-25 1:25 Video Distribution Amplifier Overview 3
Using the VM-25 Video Distribution Amplifier Table 1: Front Panel VM-25 Video Distribution Amplifier Features 1 # Feature POWER Switch Function Illuminated switch supplying power to the unit 2 3 4 5 6 7 8 9 10 11 12 EQ. Trimmer LEVEL Trimmer EQ. Trimmer LEVEL Trimmer EQ. Trimmer LEVEL Trimmer EQ. Trimmer LEVEL Trimmer EQ. Trimmer LEVEL Trimmer TERMINATION Button Adjusts1 the video EQ.
Using the VM-25 Video Distribution Amplifier 3. Connect the 12V DC power adapter to the power socket on the VM-25, and plug the adapter into the mains electricity socket. 4. Push in the TERMINATION button1 to terminate the line to 75 . 5. If required, adjust2 the video trimmer controls3 for output signal level and/or cable compensation equalization level.
Using the VM-25 Video Distribution Amplifier 4.2 Increasing the Outputs You can increase the number of outputs by interconnecting VM-25 units. The example in Figure 3 illustrates how to connect three units to increase the number of outputs from 25 to 75. To form a 1:75 video DA, do the following1: 1. Connect a video source (for example, a composite video player) to the INPUT RCA connector of the first VM-25 unit. 2.
Using the VM-25 Video Distribution Amplifier Composite Video Player … Display 1 Display 25 … Display 26 Display 50 … Display 51 Display 75 Figure 3: Increasing the Outputs: Arranging a 1:75 Video DA 7
Technical Specifications 5 Technical Specifications Table 3 includes the technical specifications: 1 Table 3: Technical Specifications of the VM-25 Video Distribution Amplifier INPUTS: OUTPUTS: MAX. OUTPUT LEVEL: BANDWIDTH (-3dB): DIFF. GAIN: DIFF. PHASE: K-FACTOR: S/N RATIO: CONTROLS: COUPLING: POWER SOURCE: DIMENSIONS: WEIGHT: ACCESSORIES: 1 composite video, 1 looping on RCA connectors 25 composite video, on RCA connectors 1.7Vpp 433MHz 0.08% 0.005 Deg. <0.
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.
For the latest information on our products and a list of Kramer distributors, visit our Web site: www.kramerelectronics.com, where updates to this user manual may be found We welcome your questions, comments and feedback. Kramer Electronics, Ltd. Web site: www.kramerelectronics.com E-mail: info@kramerel.
