Drake 806DM Video Demodulator User Manual

806DM

AGILE NTSC VIDEO DEMODULATOR

Rack Mount Commercial Agile Channel 54-806 MHz Analog Video Demodulator

INSTRUCTION MANUAL

is a registered trademark of R.L. Drake Holdings, LLC

© Copyright 2013 R. L. Drake Holdings, LLC P/N: 651233300 Printed in China.

V001 02122014

1003615

2 Caution Statements

WARNING: TO PREVENT FIRE OR

ELECTRICAL SHOCK DO NOT

EXPOSE TO RAIN OR MOISTURE

¡WARNING!

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

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 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.

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.

Important Safety Instructions

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 swimming 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 recommended 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 supplied 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
alternating-current 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.
12 a. Mise à la terre ou Polarisation—Cet appareil est équipé avec un cordon d'alimentation
à trois fils. Il est a brancher sur une prise ayant un connecteur a la terre. Assurez-vous que
la connection a la terre ne manque pas.

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 connected
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 electrode. 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.

WARNING:

CAUTION:

ATTENTION:

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.

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.

POUR PREVENIR LES CHOCS ELECTRIQUES, NE PAS UTILISER CETTE FICHE
POLARISEE AVEC UN PROLONGATEUR, UNE PRISE DE COURANT OU UNE AUTRE
SORTIE DE COURANT, SAUF SI LES LAMES PEUVENT ETRE INSEREES A FOND SANS
EN LAISSER AUCUNE PARTIE A DECOUVERT.

17. Overloading—Do not overload wall outlets, extension cords, or integral convenience
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 improper
adjustment of other controls may result in damage and will often require extensive 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 THAT 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.

EXAMPLE OF ANTENNA GROUNDING

GROUND CLAMP

ELECTRIC
SERVICE
EQUIPMENT

POWER SERVICE GROUNDING ELECTRODE

SYSTEM (NEC ART 250, PART H)

ANTENNA

DISCHARGE UNIT

(NEC SECTION 810-20)

GROUNDING

CONDUCTORS

(NEC SECTION 810-21)

GROUND CLAMPS

ANTENNA

LEAD IN

WIRE

Table of Contents, Specifications, and Description 3

TABLE OF CONTENTS SPECIFICATIONS

2 Caution Statements

2 Important Safety Instructions

3 Table of Contents/Specifications/Description

4 Front Panel Controls and Indicators

Input Frequency:

Input Level:

Noise Figure:

Image Rejection:

Input Impedance:

RF

54 - 806 MHz,
Off-Air: Channels 2 - 69.
CATV: Channels 2 - 125.

-10 to +35 dBmV.
10 dB, maximum.
50 dB, minimum.
75 Ohms.

4 Rear Panel Connections

5 Reference Chart of Off-Air and CATV Channels

6 Service / If You Need To Call For Help

7 Warranty

DESCRIPTION

VIDEO

Output Level:

AUDIO

Output Level:

Output Impedance:

GENERAL

AC Power Input:

Operating Temperature:

Dimensions:

Weight:

Connectors:

1.0 Vp-p nominal, NTSC
standard negative sync,
adjustable with front panel
control.

350 mV rms nominal,
adjustable.
600 Ohms, nominal.

115 VAC ±10%, 60 Hz,10 Watts.

0

C to +500 C, ambient.

0
19” W x 1.75” H x 3.125” D.

4.5 lbs (2.2 Kg).
RF Input and Video Output are
type F.
Unbalanced Audio Output is
Type "F".
Use adapter for RCA phono.

CHANNEL

The DRACOM 806DM is a professional quality agile
NTSC television demodulator that provides an audio and
video output from any VHF, UHF, or CATV channel
(54 - 806 MHz). The standard 1-rack-unit package design
of the 806DM permits convenient pairing with a Drake
rack mount Video Modulator to perform off-air or CATV
channel processing.

The desired off-air VHF or UHF television channel from
2 through 69 or CATV channel from 2 through 125 is
selected by a front panel recessed push button switches.
The 806DM provides a standard negative sync video
output at a nominal level of 1 Vp-p which is adjustable
with a front panel control. Also provided is an audio
output signal, nominal 350 mV, that is level adjustable
with a front panel control.

806DM AGILE NTSC DEMODULATOR

CHANNEL

LOCK ANTENNA
UNLOCK

CABLE

AUDIO
LEVEL

VIDEO
LEVEL

As previously described, channel selection switches,
video output level control, and audio output level control
are located on the front panel. The RF Input is through an
“F” type connector located on the rear panel. The rear
panel Video Output is also an “F” type connector.
Unbalanced Audio Output is provided through a rear
panel connector. The unit is powered through the
attached AC line cord by a nominal 115 VAC, 60 Hz
source of power. A 115 VAC convenience outlet is also
provided.