Pantech PG-1210 Service Manual

Also see for PG-1210: User manual

Pantech PG-1210 Service Manual Manual pdf 4 page image

PG-1210 Service ManualSECTION 1. Introduction1.1 An Introduction of GSM Digital Cellular Mobile Communication SystemGSM (Global System for Mobile communication) concluded that digital technology working inthe Time Division Multiple Access (TDMA) mode would provide the optimum solution for thefuture system. Specifically , a TDMA system has the following advantage► Offers a possibility of channel splitting and advanced speech coding ,resulting in improvedspectrum efficiency.► Offers much greater variety of service than the analog► Allows considerable improvements to be made with regards to the protection of information.The GSM system is basically designed as a combination of three major subsystem;The network subsystem, the radio subsystem, and the operation support system.The functional architecture of a GSM system can be divided into the Mobile Station (MS), the BaseStation (BS), and the Network Subsystem (NS). The MS is carried by the subscriber, the BSsubsystem controls the radio link with the MS and the NS performs the switching of calls betweenthe mobile and other fixed or mobile network users as well as mobility management. The MS andthe BS subsystem communicate across the Um interface also known as radio linkThe specifications relating to MS are as follows:z TS 100 607-1 : Digital cellular telecommunication system(Phase2+)Mobile Station (MS)Conformance specification Part1:Conformance specification1.2 Frequency Allocation and Its Usez Transmit frequency band : 824MHz ~ 849MHz(For GSM850) , 1710MHz ~1785MHz(For DCS),1850MHz ~1910MHz(For PCS)z Receive frequency band: 869MHz ~ 894MHz(For GSM850), 1805MHz ~ 1880MHz(For DCS),1930MHz ~ 1990MHz(For PCS)z Channel spacing : 200 KHzz ARFCN(Absolute Radio Frequency Channel Number) : 128~251 (For GSM850), 512~885 ( ForDCS), 512~810 (For PCS)z Transmit-receive frequency spacing: 45 MHz(For GSM850), 95MHz(For DCS), 80MHz(ForPCS)z Frequency band and Channel ArrangementFor GSM850 Band Fl(n)=824.2+0.2*(n-128) 128 ≤n≤ 251 Fu(n)=Fl(n)+45824 MHz ~849 MHz : Mobile Transmit,Base receive869 MHz ~894 MHz : Base Transmit, Mobile receiveFor DCS Fl(n)=1710.2+0.2*(n-512) 512≤n≤885 Fu(n)=Fl(n)+951710 MHz ~ 1785 MHz : Mobile Transmit,Base receive1805 MHz ~ 1880 MHz : Base Transmit, Mobile receiveFor PCS Band Fl(n)=1850.2+0.2*(n-512) 512 ≤n≤ 810 Fu(n)=Fl(n)+801850 MHz ~1910 MHz : Mobile Transmit,Base receive3PANTECH