RMDA1000-30
INSTRUCTION MANUAL
One Jake Brown Road
Old Bridge, NJ 08857-1000 USA
(800) 523-6049 • (732) 679-4000 • FAX: (732) 679-4353
www.blondertongue.com
RMDA
Rack Mountable Distribution Amplifier Series
651148000S
RMDA 550-30 RMDA 750-30P
Stock No. 5500-53
Stock No. 5500P73
RMDA 550-30P
RMDA -860-15S
Stock No. 5500P53
Stock No. 5500S81
RMDA 550-30S
RMDA 860-30
Stock No. 5500S53 Stock No. 5500-83
©2006 Blonder Tongue Laboratories, Inc. All rights reserved. Specifications are subject to change without notice. Trademarks are the property of their respective owner.
Description
The RMDA series of 19” rack mount amplifiers are completely self-contained broadband distribution amplifiers,
designed specifically for signal distribution systems requiring the low distortion characteristics only available using
hybrid CATV integrated circuits. Useful either in systems which use a “cable drop” as a signal source or as the
launch amplifier in a headend, these amplifiers are available in various gain versions with four different bandwidths,
47 to 550 MHz, 47 to 750 MHz, 47 to 860 MHz or 47 to 1000 MHz.
These amplifiers are available with one or two hybrid amplifier gain blocks. The use of two gain block units with
interstage controls provides superior noise performance along with an extended range of gain and slope. The single
gain units provide good electrical performance at a modest price. The combination of these two architectures in the
RMDA line results in models with a wide range of performance features to satisfy simple or stringent applications.
The series provides flat operating gain which can be reduced with a variable attenuator. Gain and slope controls are
located on the front panel for fast set-up and adjustment.
Two 20 dB test points are provided to permit testing without interruption of service.
Hybrid IC modules enable the RMDA to operate at high output levels while retaining low distortion
characteristics.
The aluminum chassis is designed to provide excellent heat dissipation, thus allowing operation at high ambient
temperatures with no degradation of performance or reliability.
Features
• Aluminum Chassis Designed for Superior Heat
Dissipation
• Single or Dual Hybrid Models
• Push-Pull and Power Doubling Hybrid Models
• C/UL Listed
RMDA 550-50 RMDA -860-30P
Stock No. 5500-55 Stock No. 5500P83
RMDA 750-15S RMDA 860-43P
Stock No. 5500S71 Stock No. 5500P84
RMDA 750-30 RMDA 1000-30
Stock No. 5500-73 Stock No. 5500-13
• 550, 750, 860 and 1000 MHz Units
• Hybrid IC Circuitry for High Output with Low Distortion
• Exceptional Temperature Stability Range
• Front Panel Gain and Slope Controls for Easy Adjustment
WARNING: TO REDUCE THE RISK OF FIRE OR SHOCK HAZARD, DO NOT EXPOSE THIS UNIT TO RAIN OR MOISTURE.
THIS APPARATUS SHALL NOT BE EXPOSED TO DRIPPING OR SPLASHING AND THAT NO
OBJECTS FILLED WITH LIQUIDS,SUCH AS VASES, SHALL BE PLACED ON THE APPARATUS.
THE MAINS PLUG OR APPLIANCE COUPLER IS USED AS THE DISCONNECT DEVISE AND SHALL REMAIN READILY OPERABLE.
NOTE TO CATV SYSTEM INSTALLER
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.
!
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
The lightning flash with arrow-
head symbol within an equilateral
triangle is intended to alert you
to the presence of uninsulated
“dangerous voltage” within the
product’s enclosure that may be
of sufficient magnitude to consti
-
tute a risk of electrical shock to
persons.
The exclamation point within an
equilateral triangle is intended
to alert you to the presence of
important operating and main
-
tenance (servicing) instructions
in the literature accompanying
the product.
TO REDUCE THE RISK OF ELECTRICAL SHOCK, DO NOT REMOVE COVER FROM THIS UNIT.
NO USER-SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
IMPORTANT SAFETY INSTRUCTIONS
1. Read these Instructions- All the safety and operating instructions should be read before this product is
operated.
2. Keep these Instructions- The safety and operating instructions should be retained for future reference.
3. Heed all warnings- All warnings on the product and in the operating instructions should be adhered to.
4. Follow all instructions-All operating and use instructions should be followed.
5. Do not use this apparatus near water-for example, near a bath tub, wash bowl, kitchen sink, or laundry
tub, in a wet basement, or near a swimming pool, and the like. Refer to individual instruction manuals
included with products designed for indoor use only. Do not expose these products to rain or moisture.
6. Clean only with a dry cloth-Unplug this product from the AC power outlet before cleaning.
7. Do not block any ventilation openings-Install in accordance with the manufacturer’s instructions.
8. Do not Install near any heat sources such as radiators, heat registers, stoves, or other apparatus
(including amplifiers) that produce heat.
9. Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has two
blades with one wider than the other. A grounding type plug has two blades and a third grounding
prong. The wide blade or the third prong are provided for your safety. If the provided plug does not fit
into your outlet, consult and electrician for replacement of the obsolete outlet.
10. Protect the power cord from being walked on or pinched, particularly at plugs, convenience receptacles
and the point where they exit from the apparatus.
11. Only use attachments/accessories specified by the manufacturer.
12. Use only with the cart, stand, tripod, bracket, or table specified by the manufacturer, or sold with the
apparatus. When a cart is used, use caution when moving the cart/apparatus combination to avoid
injury from tip-over.
13. Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been
damaged in any way, such as power-supply cord or plug is damaged, liquid has been spilled or objects
have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate
normally, or has been dropped.
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