Contemporary Research QDA4-45 Скачать руководство пользователя страница 7

Contemporary Research 

QDA4-45 

Safety Instructions 

 Read before operating equipment. 

 

1.

 

Cleaning - Unplug this product from the wall outlet before cleaning. Do not use liquid cleaners or 
aerosol cleaners. Use a damp cloth for cleaning. 

 

2.

 

Power Sources - Use supplied or equivalent UL/CSA approved low voltage DC plug-in transformer. 

 

3.

 

Outdoor Antenna Grounding - If you connect an outside antenna or cable system 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. Section 810 of the National Electrical Code, ANSI/NFPA No. 70, provides 
information with respect 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. 

 

4.

 

Lightning - Avoid installation or reconfiguration of wiring during lightning activity. 

 

5.

 

Power Lines - Do not locate an outside antenna system near overhead power lines or other electric 
light or power circuits or where it can fall into such power lines or circuits. When installing an outside 
antenna system, refrain from touching such power lines or circuits, as contact with them might be 
fatal. 

 

6.

 

Overloading - Do not overload wall outlets and extension cords as this can result in a risk of fire or 
electric shock. 

 

7.

 

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

 

8.

 

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. 

 

9.

 

Damage Requiring Service - Unplug this product from the wall outlet and refer servicing to qualified 
service personnel under the following conditions: 

 

When the power supply cord or plug is damaged. 

 

If liquid spills or objects fall into the product. 

 

If the product is exposed to rain or water. 

 

If the product does not operate normally by following the operating instructions. Adjust only those 
controls that are covered by the operating instructions. 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. 

 

If the video product is dropped or the cabinet is damaged. 

 

When the video product exhibits a distinct change in performance, this indicates a need for 
service. 

 

 
 
 

Содержание QDA4-45

Страница 1: ...Product Manual QDA4 45 RF Amp Combiner May 1 2014 ...

Страница 2: ...s Table of Contents 2 Overview 3 Specifications 4 Installation 5 Basic Setup 5 Rack Mounting 6 RK2 Dual Rack Kit with Tie Bar Mounting 6 RK1 Single Unit Rack Mount 6 RK2 Locking Cases together 6 Safety Instructions 7 Limited Warranty and Disclaimer 8 ...

Страница 3: ...RK2 rack kits and can be mixed with QMOD HDTV modulators using the same rack kits The units are wholly designed and manufactured in the USA Features Switches between one input or four input combiner Adds up to 32 dBmV gain for one input 25 dB for 4 inputs Provides a maximum output level of up to 50 dBmV Wideband low noise amplifier Low power draws less than 8 5 watts Compact metal enclosure mounts...

Страница 4: ...maximum 11 5 to 12 7 VDC Use the included 12 VDC power supply not with shared 4 6A DC power supplies Inputs Max Input Level 40 dBmV Combiner Isolation 38 dB typical 30 dB minimum 54 860 MHz Return Loss 13 dB typical for single input 30 dB typical for all Output Input 1 only 0 32 dBmV gain low noise linear performance through 860 MHz All Inputs 0 25 gain 7 dBmV loss from combiner Max Level Maximum ...

Страница 5: ...o you just add the gain setting to the input level For example to amplify four QMODs typical 29 db to 45 dB add 16 dB of gain RF Amp Out The QCA9 33 accepts up to 38 dBmV RF level and you can amplify up to 50 dB RF Levels If the RF level is too strong the TVs can act as if there is no RF signal The input RF level and the QDA gain level should not exceed 50 dBmV the goal is to average about 45 dBmV...

Страница 6: ... and attach the screws 4 Add the rack mounts to the sides RK1 Single Unit Rack Mount Attach the long and short rack ears to the side and towards the front of the unit with the four 4 supplied 8 32 by black countersunk screws RK2 Locking Cases together 1 Remove top cover of the first unit by removing the ten 10 black screws 2 Attach cover of first unit to the side of the second with three 3 supplie...

Страница 7: ...efrain from touching such power lines or circuits as contact with them might be fatal 6 Overloading Do not overload wall outlets and extension cords as this can result in a risk of fire or electric shock 7 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 resulting in a fire or electric shock Neve...

Страница 8: ...re sought or a claim is made under this warranty or as a tort claim including negligence and strict product liability a contract claim or any other claim This limitation of liability cannot be waived or amended by any person This limitation of liability will be effective even if CR or an authorized representative of CR has been advised of the possibility of any such damages Some states do not allo...

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