MHz (base transmit, mobile receive). Benefon Twin does not support E-GSM band. Maximum output power on lower band is 2 W and on upper band 1 W. Thus Benefon Twin belongs to power class 4 on lower band and to power class 1 on higher band.
1.6 Operating voltages Maximum operating voltage is 5.2 V, minimum voltage 3.3 V. Nominal voltage 4.0 V. 1.7 Battery packs and operating times Initially three battery packs are available for Benefon Twin, namely Battery type Talk time up to Stand-by time up to...
1.9.2 Location based services Benefon Twin has a capability to send information of the base stations it can receive. This information is wrapped into a SMS message including some service requests. Network can calculate the location of the mobile based on this network information.
4.1 General 4.1.1 Scope This document briefly describes the TG Service software for Benefon products belonging to the Twin Generation, namely Benefon Twin, Benefon Twin DS, Benefon Q, Benefon Esc! and Benefon Track. 4.1.2 Hardware requirements of TG Service software The use of TG Service software requires a proper service adapter ( APD 70 ).
Product: TGP71EU & TGP73EU / Local Service 08.02.2002 To establish a connection between the TG Service software and the phone do fol- lowing 1. Switch the adapter to the Service mode. Connect the mobile phone to the service adapter and check that the phone starts up. NOTE! When the phone starts, wait until the text "Seeking emergency cover"...
Product: TGP71EU & TGP73EU / Local Service 08.02.2002 4.3.1 File menu The file menu allows the user to handle the tuning parameter file. It contains the tun- ing parameters of an individual phone. 4.3.1.1 Load from mobile With this option user can read all the tuning parameters from the phone’s non-vola- tile memory.
Product: TGP71EU & TGP73EU / Local Service 08.02.2002 4.3.3 View menu This menu item allows the user to adjust some TG Service software window set- tings. 4.3.3.1 Toolbar With this setting the user can toggle the toolbar on and off. With the visible Toolbar, the user can access the most often needed functions faster than through the menu.
Product: TGP71EU & TGP73EU / Local Service 08.02.2002 4.3.4 Device menu This menu item allows the user to initialise a connection between the PC and phone plus toggle the mode of the phone between Service (Local) mode and Normal Oper- ation mode.
Product: TGP71EU & TGP73EU / Local Service 08.02.2002 4.3.5 Service menu This menu item allows the service personnel to use the service functions needed during unit repair and view related tune-up values. 4.3.5.1 View tuning values This menu item allows the user to view the LCD contrast setting and battery voltage correction value.
Product: TGP71EU & TGP73EU / Local Service 08.02.2002 4.3.6 Tuning menu This menu item allows the user to tune an individual setting related to the phone. 4.3.6.1 TX Power ramp This menu item allows the user to adjust the TX power levels on both GSM and DCS bands.
Product: TGP71EU & TGP73EU / Local Service 08.02.2002 4.3.7 Help menu This menu allows the user to check the version of the TG Service software. 3gp_71sw21gb.fm...
5.0 TECHNICAL DESCRIPTION 5.0.1 General Benefon Twin and Benefon Twin DS has two circuit boards, PCBs. Main PCB has all the GSM specific function on board, both radio and baseband section. Auxiliary PCB provides a platform for LCD display and keypad. Circuit boards are connected to together with a 32 pin connector.
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Product: TGP71EU & TGP73EU / 08.02.2002 PIN 4: RTS signal for asynchronic serial line number 1 (RS232). Used for data communication between the GSM mobile phones and PC. When there is other accessory than data cable connected to the mobile phone this pin can be used to control the accessory power.
Product: TGP71EU & TGP73EU / 08.02.2002 If this signal has been pulled to ground and the headset detector (pin 7) is in logic ’1’ state the mobile assumes that there is an accessory using serial port connected to the system connector. PIN 14 &...
Product: TGP71EU & TGP73EU / 08.02.2002 5.0.5 HW and SW version numbering Both HW and SW version are displayed in Service (local) mode. From idle mode SW version can be read from the phone by keying in *#0000#. Addi- tionally this display shows also the SW compilation date. 5.0.5.1 Hardware version HW version number consists of 8 digits like SBBRRDDZ.
Product:TGP71EU & TGP73EU / OC2300 08.02.2002 5.1 Logic/audio OC2300 5.1.1 General description for the baseband The baseband is built with Analog Devices components. The baseband can be devided into six major parts: 1. Enhanced GSM Processor 2. Voice Band Codec 3.
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Product:TGP71EU & TGP73EU / OC2300 08.02.2002 5.1.1.1 Enhanced GSM Processor The EGSMP (ADI chip AD6426) performs all the baseband functions of the layer 1 processing of the GSM interface. This includes all data encoding and decoding processes as well as timing radio sub-system control functions. In the EGSMP there is a DSP (speech codec and channel equalizer), main processor ( Hitachi H8/300H processor) and also the interfaces ( all the sub- system of the therminal, including the keypad, memories, display driver, SIM,...
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Product:TGP71EU & TGP73EU / OC2300 08.02.2002 5.1.1.2 Voice Band Codec The VBC (ADI chip AD6425) contains complete codecs for the conversion of voiceband and baseband signals as well as D/A- converters to control the radio subsystem and auxiliary A/D-converter for signal monitoring purposes. The voiceband codec is a complete analog front-end, which can interface directly with a microphone and a speaker.
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Product:TGP71EU & TGP73EU / OC2300 08.02.2002 5.1.1.3 Memory The memories consists of Flash SRAM and EEPROM. The Flash and RAM are 16 bits wide with total size of 32Mbit (Flash) and 4Mbit (RAM). The EEPROM is a 2-Wire Serial memory with the size of 128kbit. 5.1.1.4 Display The Display is a Seiko Epson FSTN LCD module (100*48 dots 2.7V) The...
Product:TGP71EU & TGP73EU / OC2300 08.02.2002 5.2 RF 5.2.1 General The RF-part is based on Hitachi dualband GSM RF-chip HD155121F, which includes receiver circuit, offset loop modulation TX architecture and IF-VCO. The final power amplifier is Hitachi PF08103B dualband TX module. RF parts are powered by three 2.8V linear regulators, which provide separate power supply for PLL synthesizer and VCO, modulator and TX-parts, and other RF- parts such as AGC-amplifier and LNA etc.
Product:TGP71EU & TGP73EU / OC2300 08.02.2002 5.2.5 Power supply and power switching The battery voltage is regulated in switchable regulators I302, I303 and I401. The used supply voltage for RF-components is 2.8 V, except dual-band TX- module.The power on/off switching is controlled from baseband-processor using output-enable pin of each regulator.