(Jan. 6TH 2008, Beijing) After successful trial operation in 4 Olympic cities, Digital Horizon (Beijing) announced, at the beginning of 2008 Olympic year, that their CMMB modulator exciter Cello-GAF goes to the mass production. This equipment is the motor of the CMMB transmitter. It will help to speed up the CMMB transmitter deployment and enlarge the network coverage in the whole country. People can enjoy the mobile TV service during the coming Olympic games
Cello-GAF modulator exciter have been successfully integrated with famous transmitter manufacturers in the world such as BBEF, R&S, TOSHIBA and THOMSON. During the first round of CMMB national wide trial network construction, Cello-GAF exciters have being used in 4 Olympic cities including Qingdao, Shenyang, Qinhuangdao and Guangzhou.
Cello-GAF CMMB modulator exciter presents excellent performance. It covers the whole UHF and VHF bandwidth, and can meet the radio frequency network planning of SARFT. The output frequency can be adjusted by a step of 1 Hz. It supports single frequency network and shows very strong pre-correction capability, which can improve the efficiency of transmitter. The shoulder of the modulator can go up to 52dB. After pre correction, the shoulder of the transmitter can reach 40dB . Other key features such as spurious, flatness, frequency stability, group delay etc present also good performance. This equipment can provide high quality signal, it makes the receiver easy to be tuned to the TV channels with better video quality.
Cello-GAF is the first CMMB modulator exciter in mass production. It will greatly help transmitter manufacturer at the broadcast side. Together with the key terminal manufacturer in CMMB industy chain such as Innofidei, Lenovo and ZTE, it will accelerate the construction of CMMB network coverage, so as to provide mobile TV service during Beijing Olympic Games in 2008. |
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