DRAKE VM2050 Instruction Manual

Printed in China. ® VM2050/VM2551 Commercial Video Modulator (For use in NTSC systems) Rev: 20151111 1002412A/1002423A VM SERIES VIDEO MODULATOR © Copyright 2015 R.L. Drake Holdings LLC P/N: 651232400B ...

the product is operated. 2. Retain Instructions—The safety and operating instructions should be retained for future reference. 3. Heed Warnings—All warnings on the product and in the operating instructions should be adhered to. 4. Follow Instructions—All operating and use instructions should be followed. 5. Cleaning—Unplug this product from the wall outlet before cleaning. Do not use liquid cleaners or aerosol cleansers. Use a damp cloth for cleaning. 6. Attachments—Do not use attachments that are not recommended by the product manufacturer as they may ca ...

1. Lire les directives—Toutes les directives de sécurité et d’utilisation devraient être lues avant de mettre l’appareil en opération. 2. Conserver les directives—Les directives de sécurité et d’utilisation devraient être conservées pour consultation future. 3. Tenir compte des avertissements—Tous les avertissements apparaissant sur l’appar- eil et dans les consignes d’utilisation devraient être respectés. 4. Suivre les directives—Toutes les directives d’opération et d’utilisation devraient être suivies. 5. Nettoyage—Débrancher l’appareil de la prise électrique murale avant le nettoy ...

2 Caution Statements 2 Important Safety Instructions 4 Table of Contents / Description / Specifications 5 Front/Rear Panel Controls and Indicators TABLE OF CONTENTS The R.L Drake VM2050 and VM2550 Video Modulators are high quality, vestigial sideband units with synthesized visual and aural carriers. They are designed to accept NTSC video and audio baseband signals from a satellite receiver or similar equipment. Front panel video and audio level controls with accompanying modulation indicators permit easy setup of the proper modulation levels. The A/V ratio and RF output level controls are also provid ...

Operating Controls All operating controls and indicators for the modulator are located on, or are accesible from the front panel. [1] EAS/ALT INDICATOR: Lights Red when EAS/ALT is active. [2] VIDEO OVERMODULATION LED: Lights when modulation is above 87.5% [3] VIDEO MODULATION LEVEL: Adjusts percentage of modulation. [4] AURAL-TO-VISUAL CARRIER RATIO: Controls amplitude of aural RF carrier relative to visual RF carrier. [5] AUDIO MODULATION LEVEL: Adjusts aural carrier modulation. [6] AUDIO OVERMODULATION LED: Lights when peak deviation of aural carrier is over 25 kHz. [7] DISPLAY MODE BUTTON: Used to scrol ...

of Channel, Channel Configura Output Level mode in this order. The res g state (default) of the modulator’s display mode is the channel number. Channel The output channel is selected by pressing the UP or DN bu on when in the channel display mode. The LED display will blink indica g a transi state. The actual channel is not changed un the ENTER bu on is pressed. If the ENTER bu on is not pressed, the display will return to res g state a er 30 seconds. Pressing and holding the UP or DN bu on will allow for faster scrolling of channel. All internal a enuators are temporarily set ...

Level Adjust control clockwise un the Video Overmodula light just flashes, then back off slightly. Alterna vely, while watching the picture on a good TV monitor, adjust the control to the highest (clockwise) level that does NOT cause the highlights (white por of the picture) to become “washed out”. AUDIO LEVEL: Turn the Audio Level Adjust control clockwise un the Audio Overmodula light just flashes slightly on the loudest peaks of the audio program material. OUTPUT LEVEL: The Output Level is adjusted b ...

Output Channel Switch Setting 01 02 03 04 05 06 0 ...

Visual Carrier Frequency (MHz) 471.25 477.25 483.24 489.25 495.25 501.25 507.25 513.25 519.25 525.25 531.25 537.25 543.25 549.25 14 15 16 17 18 19 20 21 22 23 24 25 26 27 UHF BROADCAST CHANNELS UHF BROADCAST CHANNELS UHF BROADCAST CHANNELS UHF BROADCAST CHANNELS UHF BROADCAST CHANNELS Channel Number 55.25 61.25 67.25 77.25 83.25 175.25 181.25 187.25 193.25 199.25 205.25 211.25 2 3 4 5 6 7 8 9 10 11 12 13 Visual Carrier Frequency (MHz) VHF BROADCAST CHANNELS VHF BROADCAST CHANNELS VHF BROADCAST CHANNELS VHF BROADCAST CHANNELS VHF BROADCAST CHANNELS Channel Number TABLE 2: BROADCAST TV ...

A Return Material Authorization (RMA) Number is required on ALL PRODUCT RETURNS (regardless of whether the product is being returned for repair or for credit). Product that is received at the factory without an RMA Number will be returned to the sender, unopened. RMA Numbers must be used when returning product for credit or repair. Use of RMA Numbers will ensure efficient processing. When needing to return your product to R.L. Drake Holdings, LLC., please follow these simple steps listed below (in the order that they appear). Service 1. Contact R.L. Drake Holdings, LLC.’s Service Department in one of three ways: Phone: 732-313 ...

licensed) by Seller which is defective in materials or workmanship or fails to meet the applicable specifications that are in effect on the date of shipment or such other specifications as may have been expressly agreed upon in writing: (i) for a period of three (3) years from the date of original purchase for all stock hardware products (other than those specifically referenced herein below having a shorter warranty period); (ii) for a period of ...

710 Pleasant Valley Drive Springboro, Ohio 45066 Customer Service and Parts Telephone: +1 (937) 746-6990 Telefax: +1 (937) 806-1510 World Wide Web Site: http://www.rldrake.com ...