Mobile Communication Trainer

quick overview :

Mobile Communication Trainer

• Display : 16 character x 2 lines
• keyboard : 4 lines x 4 columns
• DTMF ( Dual Tone multi Frequency ) : Telephone tone generator and 2 Band filter decoder
• DSP IC :
• it generates DTMF signal
• it uses the keyboard for data input
•   it shows the number selected on the display
• PIC IC manages : Display, Keyboard and Calls
• Built in loudspeaker with adjustable power amplifier
• Selections : Dialing, incoming Call answer and Radio channel
• Channel coding :
• PCM ( Pulse Code Modulation )
•  8 KHz sampling frequency
•  baud rate of 64 kb/s
• TDMA Frame : 4 user time slots, 1 synchronism time slot, Time slot display
• Smoothing Filter
• UHF Transmitter and Receiver :
• 4 selectable channels by PLL circuit
• RF channel frequency : 2400 to 2481 MHz
•  In/Out Impedance : 50Ω
• Transmitter Output RF Power : ≥10 dBm
• Channel noise simulator
• Channel Attenuation simulator
• 2 stylus Antennas
• Compact and strong metal box including :
•  lift able cover with block diagram
•  Electronic components and power supply
•  Fault simulator : protected with key locked cover and including 10 faults insertable by switches
• Cable and Microphon