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1. Read Instructions

—All the safety and operating instructions should be read before 

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 cause hazards.

7. Water and Moisture

—Do not use this product near water—for example, near a 

bathtub, wash bowl, kitchen sink or laundry tub; in a wet basement; or near a swim

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ming pool; and the like.

8. Accessories

—Do not place this product on an unstable cart, stand, tripod, bracket, 

or table. The product may fall, causing serious injury to a child or adult, and serious 

damage to the product. Use only with a cart, stand, tripod, bracket, or table recom

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mended by the manufacturer, or sold with the product. Any mounting of the product 

should follow the manufacturer’s instructions, and should use a mounting accessory 

recommended by the manufacturer.

9.

 A product and cart combination should be moved with care. Quick stops, excessive 

force, and uneven surfaces may cause the product and cart combination to overturn.

10. Ventilation

—Slots and openings in the cabinet are provided for ventilation and to 

ensure reliable operation of the product and to protect it from overheating, and these 

openings must not be blocked or covered. The openings should never be blocked by 

placing the product on a bed, sofa, rug, or similar surface. This product should not be 

placed in a built-in installation such as bookcase or rack unless proper ventilation is 

provided or the manufacturer’s instructions have been adhered to.

11. Power Sources

—This product should be operated only from the type of power 

source indicated on the marking label. If you are not sure of the type of power sup

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plied to your home, consult your product dealer or local power company. For products 

intended to operate from battery power, or other sources, refer to the operating 

instructions.

12. Grounding or Polarization

—This product may be equipped with a polarized 

alternatingcurrent line plug (a plug having one blade wider than the other). This plug 

will fit into the power outlet only one way. This is a safety feature. If you are unable to 

insert the plug fully into the outlet, try reversing the plug. If the plug should still fail to 

fit, contact your electrician to replace your obsolete outlet. Do not defeat the safety 

purpose of the polarized plug. Alternate Warnings—If this product is equipped with 

a three-wire grounding-type plug, a plug having a third (grounding) pin, the plug will 

only fit into a grounding-type power outlet. This is a safety feature. If you are unable 

to insert the plug into the outlet, contact your electrician to replace your obsolete 

outlet. Do not defeat the safety purpose of the grounding-type plug.

13. Power-Cord Protection

—Power-supply cords should be routed so that they are 

not likely to be walked on or pinched by items placed upon or against them, paying 

particular attention to cords at plugs, convenience receptacles, and the point where 

they exit from the product.

14. Outdoor Antenna Grounding

—If an outside antenna or cable system is connect

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ed to the product, be sure the antenna or cable system is grounded so as to provide 

some protection against voltage surges and built-up static charges. Article 810 of the 

National Electrical Code, ANSI/NFPA 70, provides information with regard to proper 

grounding of the mast and supporting structure, grounding of the lead-in wire to an 

antenna discharge unit, size of grounding conductors, location of antenna-discharge 

unit, connection to grounding electrodes, and requirements for the grounding elec

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trode. See Figure A.

15. Lightning

—For added protection for this product during a lightning storm, or when 

it is left unattended and unused for long periods of time, unplug it from the wall outlet 

and disconnect the antenna or cable system. This will prevent damage to the product 

due to lightning and power-line surges.

16. Power Lines

—An outside antenna system should not be located in the vicinity of 

overhead power lines, other electric light or power circuits, where it can fall into such 

power lines or circuits.

17. Overloading

—Do not overload wall outlets, extension cords, or integral conve

-

nience receptacles as this can result in a risk of fire or electric shock.

18. Object and Liquid Entry

—Never push objects of any kind into this product through 

openings as they may touch dangerous voltage points or short-out parts that could 

result in a fire or electric shock. Never spill liquid of any kind on the product.

19. Servicing

—Do not attempt to service this product yourself as opening or removing 

covers may expose you to dangerous voltage or other hazards. Refer all servicing to 

qualified service personnel.

20. Damage Requiring Service

—Unplug this product from the wall outlet and refer 

servicing to qualified service personnel under the following conditions:

a.

 When the power-supply cord or plug is damaged, 

b.

 If liquid has been spilled, or objects have fallen into the product,

c.

 If the product has been exposed to rain or water,

d.

 If the product does not operate normally by following the operating instructions. 

Adjust only those controls that are covered by the operating instructions as an im

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proper adjustment of other controls may result in damage and will often require ex

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tensive work by a qualified technician to restore the product to its normal operation,

e.

 If the product has been dropped or damaged in any way, and

f.

 When the product exhibits a distinct change in performance—this indicates a need 

for service.

21. Replacement Parts

—When replacement parts are required, be sure the service 

technician has used replacement parts specified by the manufacturer or have the 

same characteristics as the original part. Unauthorized substitutes may result in fire, 

electric shock or other hazards.

22. Safety Check

—Upon completion of any service or repairs to this product, ask the 

service technician to perform safety checks to determine that the product is in proper 

operating condition.

23. Wall or Ceiling Mounting

—The product should be mounted to a wall or ceiling 

only as recommended by the manufacturer.

24. Heat

—The product should be situated away from heat sources such as radiators, 

heat registers, stoves, or other products (including amplifiers) that produce heat.

NOTE TO CATV SYSTEM INSTALLERS:

THIS REMINDER IS PROVIDED TO CALL THE CATV 

SYSTEM INSTALLER’S ATTENTION TO ARTICLE 820 - 40 

OF THE NEC WHICH PROVIDES GUIDELINES FOR PROPER 

GROUNDING AND, IN PARTICULAR, SPECIFIES THAT 

THE CABLE GROUND SHALL BE CONNECTED TO THE 

GROUNDING SYSTEM OF THE BUILDING, AS CLOSE TO 

THE POINT OF CABLE ENTRY AS PRACTICAL.

FIGURE A

Example of antenna grounding as per National Electrical Code, ANSI/NFPA 70

ANTENNA

LEAD IN

WIRE

ANTENNA

DISCHARGE UNIT

(NEC SECTION 810-20)

GROUNDING

CONDUCTORS

(NEC SECTION 810-21)

POWER SERVICE GROUNDING ELECTRODE

SYSTEM (NEC ART 250, PART H)

ELECTRIC

SERVICE

EQUIPMENT

GROUND CLAMPS

GROUND CLAMP

NEC - NATIONAL ELECTRIC CODE

WARNING: TO PREVENT FIRE OR

ELECTRICAL SHOCK DO NOT

EXPOSE TO RAIN OR MOISTURE

RISK OF ELECTRIC SHOCK

DO NOT OPEN

WARNING: TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT 

REMOVE POWER SUPPLY COVERS

NO USER-SERVICEABLE PARTS INSIDE

REFER SERVICING TO QUALIFIED PERSONNEL

! CAUTION !

CAUTION STATEMENT

An appliance and cart combination should be moved with care. Quick stops, excessive 

force and uneven surfaces may cause the appliance and cart combination to overturn.

The exclamation point within an equilateral triangle is intended to alert the user to 

the presence of important operating and maintenance (servicing) instructions in the 

literature accompanying the appliance.

The lightning flash with arrow head symbol, within an equilateral triangle, is intended to 

alert the user to the presence of uninsulated “dangerous voltage” within the product’s 

enclosure that may be of sufficient magnitude to constitute a risk of electric shock to 

persons.

WARNING:

TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS 

APPLIANCE TO RAIN OR MOISTURE. DO NOT OPEN THE CABINET, REFER 

SERVICING TO QUALIFIED PERSONNEL ONLY.

CAUTION:

TO PREVENT ELECTRIC SHOCK, DO NOT USE THIS (POLARIZED) PLUG WITH AN 

EXTENSION CORD RECEPTACLE OR OTHER OUTLET UNLESS THE BLADES CAN 

BE FULLY INSERTED TO PREVENT BLADE EXPOSURE.

Important Safety Instructions

Summary of Contents for VM2050

Page 1: ...ed trademark of the R L Drake Holdings LLC 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 ...

Page 2: ... damage to the product due to lightning and power line surges 16 Power Lines An outside antenna system should not be located in the vicinity of overhead power lines other electric light or power circuits where it can fall into such power lines or circuits 17 Overloading Do not overload wall outlets extension cords or integral conve nience receptacles as this can result in a risk of fire or electri...

Page 3: ...cuits électriques Entrer en contact avec de tels circuits ou lignes électriques pourrait être fatal 17 Surcharge Ne pas surcharger les prises de courant murales les rallonges élec triques ou les prises de courant intégrées Un risque d incendie ou de choc électrique pourrait résulter d une telle surcharge 18 Insertion d objet ou de liquide Ne jamais insérer d objet par les ouvertures de cet apparei...

Page 4: ...the rear of the unit In the manual mode the EAS ALT IF feature is activated by a contact closure switch which completes a ground connection In the automatic mode two positions on the terminal strip are jumpered together enabling an automatic detection circuit in the unit When an EAS ALT IF signal is routed to the EAS ALT port the unit automatically switches to that alternate signal DESCRIPTION SPE...

Page 5: ...tput level and modes 8 CHANNEL CHANNEL CONFIGURATION OUTPUT LEVEL DISPLAY 9 UP DOWN BUTTONS Used to scroll through the channel channel configuration and output level modes 10 ENTER BUTTON Evokes the current settings in the channel output display when depressed 11 STEREO INDICATOR Not Used Note All connections to the unit are made at the rear panel 1 RF OUTPUT 60dBmV 2 IF INPUT 35 dBmV IF Input 3 E...

Page 6: ... on when in the Channel Configura display mode The LED display will blink indica g a transi state The channel configura 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 If the mode is to be changed and it is not a valid mode for the exis g channel when the ENTER bu on is pressed the new mode will be selected and the...

Page 7: ...when in the Output Level display mode The LED display will blink indica g a transi on state The output level is not changed un the ENTER bu on is pressed If the ENTER bu on is not pressed the display will return to its res g state a er 30 seconds Pressing and holding the UP or DN bu on will allow for faster scrolling The Level increments in 0 2 dB steps Output level accuracy is typically 1 dB of d...

Page 8: ...3 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 Visual Carrier Frequency MHz STD IRC N A 55 25 61 25 67 25 77 25 83 25 175 25 181 25 187 25 193 25 199 25 205 25 211 25 121 2625 127 2625 133 2625 139 25 145 25 151 25 157 25 163 25 169 25 217 25 223 2625 229 2625 235 2625 241 2625 247 2625 253 2625 259 2625 265 ...

Page 9: ...ADCAST 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 BRO...

Page 10: ...o you 6 Securely pack the product in its original undamaged box returning the product without its original packaging in good new condition may cause the incursion of additional fees Pack this box within another shipping container or box Mark the shipping box or container with your RMA Number Place the RMA Number near the return address in large bold print approx 2 in height Ship your CREDIT RETURN...

Page 11: ... writing between the parties for a period of ninety 90 days from the date of original purchase Notwithstanding the foregoing in some cases the warranty on certain proprietary sub assembly modules manufactured by third party vendors and contained in Seller products third party software installed in certain of Seller s products and on certain private label products manufactured by third parties for ...

Page 12: ...R L Drake Holdings LLC 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 ...

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