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CableWorld CW-4000 Series User Manual
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CW-4871, -72, -73, -74, -75, -76, -78 DEMODULATOR QUADDear User!Digital technology forms our environment day by day,and we can enjoy its advantages in more and more fieldseveryday. These are the years, when digital television tech-nology takes over the leading role, thus it is time to get itknow and make preparations to use it.CableWorld Ltd. has carried on developing activity inthe field of digital television for several years. Its aim is tocreate a transparent, versatile and universal system, whichmakes this complex and complicated technology for bothengineers and other technicians as manageable and lucid asanalogue technology was.The input units of the digital headend receive signalscoming from satellites, cables and terrestrial transmitters,and convert them into transport stream signals.The transport stream is nothing else as a vast datastream consisting of numerous elementary streams. A part ofthese streams carries picture-, sound- and data signals.The CW-487x series input units consist of 4 independ-ent receiver units each, all having ASI outputs.The connecting link between the pieces of software andhardware is the CW-Net Data Transmission and DeviceControl System.1. MECHANICAL CONSTRUCTIONThe CW-4871 and -72 QPSK Demodulators, the CW-4873 and -74 QAM Demodulators and the CW-4875and -76 OFDM Demodulators and CW-4878 ASIDescrambler are built in standard 19" × 1 HU instru-ment frame. They are delivered along with followingaccessories:1. Power cord 1 ea.2. Spare fuse T1.25 A for CW-4871, -73, -75 and -78 1 ea.T2.5 A for CW-4872, -74, -76 1 ea.(placed in the fuse holder mounting)3. Crossover cable with RJ45 connectors 1 ea.The power consumption of the devices is very lowtherefore no cooling or ventilation is needed.2. ELECTRICAL CONSTRUCTIONThe CW-4871 and -72 QPSK Demodulators proc-ess the signals coming from satellites, the CW-4873and -74 QAM Demodulators process the signalscoming from cable networks, whereas the CW-4875and -76 OFDM Demodulators process the signalscoming from terrestrial transmitters, and CW-4878ASI Descrambler processes the transport stream(ASI signal). All 7 types consist of 4 receiver unitseach, and all receiver units have double ASI outputs.The devices are equipped with an own switchingmode power supply. The supply voltage of the inter-face circuits is +3.3 V, but the signal processing cir-cuits are supplied with a voltage as low as +1.8 V.The power consumption of the devices is low, andthey are suitable for continuous service.All types are put in operation in the same way.1. Connect the device to the computer throughcrossover cable.2. Set the device to the desired IP address.The devices are shipped with IP address set to10.123.13.101. When using in network, the IP addressmust be changed to avoid conflict between the IP ad-dresses of multiple devices.For changing the IP address download, install anduse the SW-4800 software. All knowledge necessaryfor this are included in the Help file of the software.After having installed the software, run it by clicking theCW-Net Principal icon, and in the IP Address Platformchange the IP address of the device. In this example letthe new address be 102 instead of the 101.3. Install software corresponding to the type of thedevice:SW-4871 for the CW-4871, -72* QPSK Demodulator QuadSW-4873 for the CW-4873, -74* QAM Demodulator QuadSW-4875 for the CW-4875, -76* OFDM Demodulator QuadSW-4872 for the CW-4878 ASI Descrambler Quad* in the a CW-4872, -74 and 76 types install also the SW-4872CAM Analyzer & Programmer software (s. page 4).CW-4000DIGITAL TELEVISION DEVICESUSER’S GUIDECW-4871, -72 QPSK DEMODULATORCW-4873, -74 QAM DEMODULATORCW-4875, -76 OFDM DEMODULATORCW-4878 ASI DESCRAMBLERBudapest XI., Kondorfa u 6/BHungaryTel.: ++36 1 204 7815Fax: ++36 1 204 7839Internet: www.cableworld.huE-mail: cableworld@cableworld.huLtd.KÁBEL-TV RENDSZEREKET GYÁRTÓ ÉS FORGALMAZÓ MAGYAR - AMERIKAI KFT.A HUNGARIAN - AMERICAN LTD. COMPANY FOR MANUFACTURE AND SALES OF CABLE TV EQUIPMENT39/06 |
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