Contemporary Research QDA4-45 Скачать руководство пользователя страница 6

Contemporary Research 

QDA4-45 

Rack Mounting 

Three options are available for rack-mounting QCA9-33 Active Combiners and QMOD modulators. 

 

RK2 Dual Rack Kit with Tie Bar Mounting 

 

New QMOD and QCA enclosures have a slot in the bottom middle of the case. This will accept a tie bar that 

will lock the two enclosures together without taking the cases apart. 

Do not mount next to new-

generation QMODs (QDA enclosure will block flow-through ventilation).

 

1.

 

Check that your enclosures have the tie bar slot. 

2.

 

Slide the included tie bar into the side of one unit and attach with the included screws.  

3.

 

Slide the other unit into the tie bar, 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 ¼” (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) supplied 4-40 by 1/4" (silver 
colored) panhead screws and split lock washers. Note that only one side of the second unit has the 
(3) built in nuts to accept the screws above. 

3.

 

Reinstall the bottom/chassis of the first unit underneath its cover and attach with just eight (8) of 
the screws removed in step 1. 

4.

 

Attach short rack ears to the side and towards the front of each unit with the four (4) supplied 8-32 
by 1/4" (black) countersunk screws. 

 

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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