Pico Macom CA-30RK559 operation manual Installation, Signal Combining Methods

CA-30RK550 Manual.qxd 9/9/03 3:02 PM Page 7

Installation Procedure

CA-30RK550

Installation

It is recommended that assistance be available to safely install equipment in equipment racks.

1. Install chassis in equipment rack (equipment rack sold separately) by supporting the bottom and rear of CA-30RK550at the desired eleva- tion in rack.

2. Line up the side holes of chassis with the tapped equipment rack holes.

3. Insert the provided screws through the mounting holes at the extreme left and right of faceplate and thread into the tapped equip- ment rack holes.

4. Fasten the bottom screws first, then fasten top screws. (tighten securely).

5. Connect power cord to outlet supplying line power to the amplifier.

6. Connect a cable from the output of the combining system to the IN connector on the rear of the CA-30RK550.

7. Connect a cable from the OUT connector on the rear of the CA-30RK550to the input of the distribution network.

8. Using a non-metallic flat blade screwdriver adjust the gain and tilt controls on the front panel of the amplifier to meet system design requirements.

Signal Combining Methods

PICO MACOM recommends connecting the headend components in the following manner: Each of the modulators, signal processors or strip ampli- fiers output are connected to a combining network. Either a PHC-12Gor a PHC-24Gheadend combiner may be used to accomplish this purpose.

The PHC-12Gor PHC-24Gpassive headend combiner consists of two rows of directional couplers combined by a hybrid splitter. Normally, the odd channels are combined on one row while even channels are combined on the other row of directional couplers for maximum isolation. The output of the combiners may be connected to the input of a launch amplifier such as a CA-30RK550or CA-30RK1000. The output of the amplifier is con- nected to the main distribution line.

The CHC16U/550 and CHC16U/860 sixteen channel active combiners provides both signal combining and post amplification of the headend signals. Up to 16 channels may be combined using the CHC16U. The combiner gain is 15 dB per channel.

A 24 channel system hook-up is shown. (The same combining result may be accomplished by using a single PHC-24G).

The two PHC-12Goutputs are combined via a two-way splitter, which is connected to a CA-30RK1000launch amplifier. The input levels to the combiner, whether from a modulator, signal processor or a strip amplifier, must be at the same amplitude.

Ph: 800-421-6511 www.picomacom.com 7

Rev. 08/03