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Contemporary Research QDA4-45, Руководство по эксплуатации продукта

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Contemporary Research 

4 

QDA4-45 

 

Specifications 

 

 

 

 

 

Physical  

Size:8.5” [216mm] wide x 1.75” [38mm] height (1RU) x 6.0” [153mm] deep 
Weight: 1.1 lb [500g] 
Enclosure: Durable metal enclosure, rack mountable 

Front Panel 

 

Input Selection, 1 or 4 inputs, Green LED indicators 
RF Gain Selection with LED display, 0-25 dB for four inputs, 0-32 dB for one 

Back Panel 

 

Inputs

: 4 F Connectors 

Amp Out

: 1 F connector 

DC Power:

 Power 2.1 mm coaxial jack (inside center conductor positive), 700 mA 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 level +50 dBmV 
CTB: Composite Triple Beat -60 dB, 134 channels at +44 dBmV per channel 
Noise: Noise Figure 4.5 typical 
Return Loss: 17 dB typical 

Includes

 

Options PS12-1 1 A 12 VDC power supply 
RK1 Rack Kit for single unit, 1 RU 
RK2 Rack Kit for dual units, 1 RU 

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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