LongReach 16 Active CCTV Receiver Hub LongReach 16 Active CCTV Receiver Hub (500120, 500121, 500122, 500123) Application Guide Version 1.03 April 2006 © MuxLab Inc.
LongReach 16 Active CCTV Receiver Hub Purpose The purpose of this document is to explain how to apply the LongReach 16 Active CCTV Receiver Hub under different operating conditions and to discuss issues that are not necessarily covered in the product Datasheet, Installation Guide or CCTV Balun Application Guide. Function The function of the LongReach 16 Active CCTV Receiver Hub is to provide a “plug-and forget” Cat 5 cabling solution for in the CCTV environment.
LongReach 16 Active CCTV Receiver Hub Automatic Image Adjustment (AGC) The LongReach 16 has auto-gain control (AGC) that automatically optimizes the video output signal according to the cable length and other factors that affect signal transmission such as temperature and cable grade. The AGC optimizes the brightness and sharpness levels of the video signal so that the image is as good as if the adjustments were performed manually. As cable length increase, AGC compensation increases as illustrated below.
LongReach 16 Active CCTV Receiver Hub Adding Cameras in an Existing Hub Installation In an existing installation, it may be necessary to add or change cameras on a LongReach 16 Hub. In order to ensure proper functioning of the hub after the new cameras are connected, it is necessary to first “reset” the hub before bringing the new cameras on-line. This may be achieved by performing one of the following procedures: Procedure A: 1. Connect the new cameras to the hub while the hub is powered on. 2.
LongReach 16 Active CCTV Receiver Hub Cabling Topologies The LongReach 16 may be deployed in various cabling topologies depending on the type of CCTV system and the architectural layout of the site. There are three basic layouts shown in the following diagrams. Camera to Head End – Short Distance In this scenario, the LongReach 16, central monitoring equipment and remote power are all colocated.
LongReach 16 Active CCTV Receiver Hub Camera to Remote Telecom Room – Extended Distance In some installations, it is more practical to install the cabling hardware in a remote telecom room and insert remote power and control if necessary at this point. Here too, siamese cables may be used between the telecom room and the cameras. Alternatively, Category 5 cables may be used to carry all three signals. A Cat5 “110” style patch panel may be used to concentrate all three signals over one Cat5 cable.
LongReach 16 Active CCTV Receiver Hub Integration into a Structured Cabling System One of the benefits of the LongReach 16 - Model 500120 is its ability to integrate easily into a structured cabling system. In this scenario CCTV baluns convert all CCTV equipment ports to twisted pair and then Category 5 interconnect hardware can be used to manage the physical camera connections without the need to install additional costly and bulky coaxial cable.
LongReach 16 Active CCTV Receiver Hub The hub may be installed up to 500 ft from the receiver (DVR, mux), thereby allowing the hub to be installed in a remote wiring or equipment room for greater cabling flexibility. The following diagram shows how the hub works in conjunction with a “110” patch panel system. The patch panel features RJ45 modular jacks in front and “110” style punchdown connectors on the rear panel. The camera inputs arrive at the RJ45 side of the patch panel.
LongReach 16 Active CCTV Receiver Hub The following diagram shows how remote power and PTZ control may be inserted at a “110” style punch-down block. A similar procedure could be used for 66, BIX and Krone interconnect hardware. The diagram shows MuxLab’s recommended convention to work in conjunction with the CCTV Pass-Thru Balun (500022).
LongReach 16 Active CCTV Receiver Hub Some CCTV systems integrators are specifying that remote power, PTZ control and video be transmitted via one 4-pair Cat5 cable. In this application, the Cat5 cable may be terminated on the CCTV Pass-Thru Balun. In order to determine the maximum distances for remote power, please refer to the CCTV Balun Application Guide available in pdf format at http://www.muxlab.com/assets/files/application_guides/VE_CCTV_Balun.
LongReach 16 Active CCTV Receiver Hub Terminating on Coaxial Cable at the DVR If the LongReach 16 is installed near the DVR or mux and coaxial cable is preferred, the 500122 may be used for this application. The 500122 are fitted with BNC output for this purpose. © MuxLab Inc.
LongReach 16 Active CCTV Receiver Hub Large Installations In large installations that have hundreds or thousands of cameras, it is often necessary to allow many security personnel to access each camera in full-motion video on demand. This usually requires an analog video cross-point matrix switch that is in turn connected to several analog video monitors as well as to digital video storage hardware. The following diagram illustrates the use of the LongReach 16 in such a configuration.
LongReach 16 Active CCTV Receiver Hub Relocation of DVR Head-end In some older installations, it is necessary to relocate the DVR head end while preserving the original camera cabling intact. In the original installation, coax cables were fed to a DVR room. The DVR equipment was subsequently moved to a new location further away and new Cat5 cabling was installed. MuxLab’s Passive CCTV Hub (500130) may be used to convert the original sixteen (16) coaxial cables at the old location to Cat5.
LongReach 16 Active CCTV Receiver Hub Using with Large Power Transformers The LongReach 16 comes with its own 24VAC power transformer. The product also works in conjunction with large central power transformers. When using the product with large power transformers, in order to ensure correct operation, the following guidelines must be respected: 1. When the power transformer is powering several hubs, power leads going to each hub must have the same phase.
LongReach 16 Active CCTV Receiver Hub Performance with different CCTV equipment The image results of a CCTV system are partly due to the proper combination of CCTV equipment. Besides the LongReach 16 itself, the main components that play a role in the image quality include; the CCTV camera, DVR cross-point switch and cabling. Before embarking on an installation, it is recommended to perform a pilot test using the LongReach 16 together with the CCTV surveillance equipment to be deployed.
LongReach 16 Active CCTV Receiver Hub Spare Power Supply In the event that a spare power supply is required for the LongReach 16, it is recommended to purchase a replacement supply from a local CCTV distributor. In North America, the power supply must be rated at minimum 60VA (24VAC/2.5A). The following link shows an acceptable power supply available from Altronix. Altronix Model DVT1 – 115V/24VAC/80VA http://www.altronix.com/p_pdf/DVT1.
LongReach 16 Active CCTV Receiver Hub MuxLab Inc. 8114 Trans Canada Hwy, St. Laurent (Quebec) Canada H4S 1M5 © MuxLab Inc.2004-2006 Telephone : .............................. +1 514-905-0588 Toll-free (North America) : ......... 1-877-689-5228 Fax : ........................................ +1 514-905-0589 E-mail: videoease@muxlab.com URL: www.muxlab.
