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Test and Measuring Instruments
OMEGA TYPE DB-28 MOBILE PHONE TRAINER kit has capability of full duplex mobile communication. DB-28 provides basic theory and working fundamentals of a 2G hand set based on the NOKIA 3310/3315. This trainer kit designed with a view to provide network, power supply, charging & user interface circuits for their practical and theoretical study based on NOKIA 3310/3315.
Practical experience on this board carries great educative value for Science and Engineering Students.
Features
- Real time Mobile Operation
- Expanded and open trainer
- Full understanding of mobile phone working
- Frequency measurement and band verification
- Provides study of all sections in mobile phone
- TX/RX Frequency measurements
- 2G technology & GMSK signals
- GSM data rate
- Detail study of User Interface Control signals
- Detail study of SIM Operation
- Battery identification and charging study
- Switch Faults
Technical Specifications
Cellular System
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EGSM/GSM 900
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Rx Frequency Band
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EGSM 925, 960MHz
GSM 900, 935, 960MHz
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Tx Frequency Band
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EGSM 880, 890MHz
GSM 900, 890, 915MHz
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Output Power
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+5V, +33dBm/32mW, 2W
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Channel Spacing
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200 KHz
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Antenna
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Loop type, 50W
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Display
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84 x 48 pixels
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On Board sections
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Antenna, Keypad, SIM, Charging Circuit, Clock, User interface such as Buzzer, Vibrator, LEDs.
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No. of test points
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54
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No. of switched fault
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20
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Features that can be set
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Screen savers, Ring tones, Logos, SMS etc.
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Accessories included
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Battery, Mains cord, Manual, Hands Free Kit
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Power Requirement
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220V ± 10% 50 Hz
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Power consumption
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3.6 Watts (Approx)
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Fuse
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1.5 amps
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Experiments that can be performed
- To study and measure frequency band
- To study and measure the GMSK signals such as Tx.1/ QRx1/Q
- To study and observe the system CLK
- Observation of Audio signal
- To study and measure the power supply
- Study of charging phenomena with fault insertion
- Study and measure PWM signal of UI circuit such as Vibrator LED buzzer
- Measurement of LED with fault insertion
- Keypad study with fault insertion
- Observe and measure the SIM Card CLK with fault insertion
- Dimension : W 412 x H 150 x D 310
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