Related Manuals for DRAKE VM2551
Summary of Contents for DRAKE VM2551
- Page 1 VM2551 Commercial Video Modulator (For use in NTSC systems) Instruction Manual is a registered trademark of the R.L. Drake Company © Copyright 2005 R.L. Drake Company P/N: 3852551B-12-2005...
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Page 2: Caution Statements
Caution Statements WARNING: TO PREVENT FIRE OR ELECTRICAL SHOCK DO NOT EXPOSE TO RAIN OR MOISTURE !WARNING! RISK OF ELECTRIC SHOCK DO NOT OPEN CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE COVER NO USER-SERVICEABLE PARTS INSIDE REFER SERVICING TO QUALIFIED PERSONNEL A product and cart combination should be moved with care. -
Page 3: Table Of Contents
0.7 -1.5 Vpp level. A high quality IF SAW filter The VM2551 is designed to accept video and audio eliminates adjacent channel interference. baseband signals from a satellite receiver, video server, VCR, camera, or similar equipment. -
Page 4: Front Panel Controls And Indicators
Front Panel Controls and Indicators A / V AUDIO AUDIO VIDEO VIDEO CHANNEL RF OUT OUTPUT RATIO LEVEL OVER DEV LEVEL OVER MOD LEVEL TEST ANT / CATV FIGURE 1 F1 - A/V RATIO Control F8- ANT/CATV This screwdriver adjustment varies the level of the aural Press to switch between the CATV or ANT (off-air carrier over a range from 12 to 18 dB below the visual channels) output. -
Page 5: Rear Panel Connections
Rear Panel Connections RF OUTPUT IF IN IF OUT VIDEO INPUT AUDIO INPUT 4.5 MHz INPUT 120V AC 600W MAX 60 Hz 618W MADE IN TAIWAN FIGURE 2 R1 - RF OUTPUT R5 - AUDIO INPUT Connector This is the modulator output. This is an unbalanced audio input to the IF circuits. -
Page 6: Installation
An external BTSC stereo encoder may be used with the be checked periodically to maintain a ±1 dB variation of VM2551. To sett the VM2551 for a flat audio response adjacent channel carriers. Aural/Visual (A/V) ratios that will accept the BTSC composite stereo input - remove should be held to -15 dB or less. -
Page 7: Specifications
Specifications AUDIO Frequency Range: 82 CATV channels, 54-550 MHz: Input Level for 25 kHz channels 2-78 and 95-99, and Peak Deviation Off-air broadcast channels 2-27. @ 1 kHz Tone: 175 mV rms minimum. 250 mV rms nominal. Manual gain FCC Frequency adjustment with front panel Offsets: Automatic: Zero, +12.5 kHz, or... -
Page 8: Service / If You Need To Call For Help
Service / If You Need To Call for Help SERVICE INFORMATION Should you want to return your unit for service, package You may contact the R.L. DRAKE Service Department for the unit carefully using the original carton or other suitable additional information or assistance by calling container. -
Page 9: Warranty
Warranty Warranty Three Year Limited Warranty R.L.DRAKE COMPANY warrants to the original purchaser this product shall be free from defects in material or workmanship for three (3) years from the date of original purchase. During the warranty period the R.L.DRAKE COMPANY or an authorized Drake service facility will provide, free of charge, both parts and labor necessary to correct defects in material and workmanship. - Page 10 R.L. Drake Company 230 Industrial Drive Franklin, Ohio 45005 U.S.A. Customer Service and Parts Telephone: +1 (937) 746-6990 Telefax: +1 (937) 806-1576 World Wide Web Site: http://www.rldrake.com...
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