This realistic classroom training TechBook introduces the user to the fundamental of 2G Dual SIM GSM mobile equipment and clears the concept of underlying GSM technology in simple way. The Keypad of mobile handset, SIM sockets and User Interface section of the mobile phone i.e. Vibrator, Buzzer, Microphone, Speaker, Hands free port and display LEDs have been exposed onboard with switched faults creation facility and 58 test points for signal observation and detailed study. Also its attractive features and self explanatory multicolored chart containing useful technical information will help user in creating a full understanding of dual SIM mobile phone system.
Product Features
• Real time mobile operation
• Operates on dual band frequency network (GSM 900/ DCS 1800)
• Colour TFT display
• Full understanding of Dual SIM mobile phone working
• Provides study of all sections in Dual SIM mobile phone
• Tx/ Rx frequency measurement and band verification
• 2G technology GMSK signal
• Detail study of User Interface Control signals
• Detail study of Dual SIM operation
• Battery identification and charging study
• Switched faults
Scope of Learning
Study and observe
• Transmitted/Received RF signals
• Tx IQ/ Rx IQ signals
• Signal constellation of GMSK signal (Rx I/Q)
• Signal constellation of GMSK signal (Tx I/Q)
• Measure Battery voltages the Battery charging phenomena
• Analyze the Buzzer section
• Analyze the vibrator section
• Analyze the LED control section
• Analyze MIC & Speaker section
• Analyze the Hands Free section (MIC/Speaker)
• Measurement voltages of Power management unit
• Observe signals of LCD display section
• Analyze Microprocessor Control unit
• Switch faults in User Interface Section
• Analyze the ‘Partially ON’ mode of phone while charging
• Switch faults in Battery section
• Switch faults in LCD display section
• Row/ Column configuration of key matrix
• Switch faults in Keypad section
• Study of SIM card detection with and without inserting SIM card
• Study of switch faults in SIM interface section
• Analyze that a mobile is powered On at the alarm set time
• Analyze the active mode of a mobile phone
• Analyze the acting dead mode of a mobile phone
• Analyze the sleep mode of a mobile phone