Telecommunication Advanced Modular System
(CM100)
  • Modeling of math equations
  • AM modulation (2 methods)
  • Envelopes/envelope recovery
  • DSBSC mod and demod
  • SSB modulation and phasing method
  • SSB demodulation - phasing method
  • Product demodulation
  • Phase lock loop
  • FM modulation & demodulation
  • Armstrong’s Phase modulator
  • PAM generation
  • TDM generation
  • FDM generation or recovery
  • PDM generation or recovery
  • PWM mod and recovery
  • Eye diagrams
  • Introduction to Pulse shaping
  • Sampling Theorem and reconstruction
  • QAM generation or demodulation
  • BPSK mod and demodulation
  • QPSK mod or demodulation
  • ASK mod and demodulation
  • QASK mod or demodulation
  • FSK modulation (2 methods)
  • Carrier acquisition - PLL
  • Spread spectrum generation
  • The noisy channel
  • BER instrumentation
  • Bit clock regeneration
  • Signal Constellations - 4/8/16-QAM and 4/8/16-PSK
  • FM demodulation - PLL
  • Detection with the decision-maker
  • BPSK
  • PRBS Sequence Synchronization
  • Line Coding and Decoding
  • PCM Encoding and Decoding
  • DPSK
  • Costas Loop
  • Introduction to processing Gain in CDMA Systems.
  • CDMA at Carrier Frequencies
  • Dual Channel CDMA encoding and decoding.
  • Multi-channel CDMA communication system.
  • FHSS: Fast & Slow Hopping
  • FHSS and Bit Error Rate Performance
  • FHSS: Hybrid DSSS/FHSS System
  • Telecommunication Modular System (ACM100)
  • Hard copy user manual
  • Advanced computer Interface Base Unit with Built-in Power Supply (MMS100)

Telecommunication Modular System used in laboratories to teach telecommunications, and signal processing courses from technical colleges to universities. It is a modeling system that simulates mathematical formulas for electrical signals or block diagrams for communications systems. it includes all of the tools needed to quickly and easily carry out every communications laboratory experiment. The main teaching method used by the Advanced Modular System combines both the theoretical and practical aspects of systems implementations. Through the experiments, the student gains a better understanding of the ideas underlying communications theory.

  • It consists of a variety of modules, each of which performs a specific function to be connected to each other during experiments as basic communication building blocks
  • The Computer Interface Base Unit has a virtual instrument that can be connected to a PC to provide spectrum analysis (FFT) and oscilloscope functions.
  • Modules are patched together via the front panel sockets using interconnecting leads, to model the system under investigation.
  • Module Left hand side banana is for signal inputs ( high impedance inputs ).
  • Module Right hand side banana is for signal outputs ( Low impedance outputs ).
  • All inputs and outputs are color-coded to indicate the type of signal.
  • Banana Marks for analog and digital signals to ease the interconnection.
  • Variable control adjustment in modules depends on the observation and measurement of output signals.

Basic modules Code: (ACM100.01)

  • Variable DC Voltage Signal Module:
    • Output Signal : Variable (-2.5 to 2.5V), Fixed (+5V DC)
  • Adder Module:
    • Input signal : Analog up to 4Vpp
    • BW: DC to 150 KHz
    • Gain : 0 to 2
  • Audio Oscillator:
    • Frequency Range: adjustable 300Hz to 10kHz
    • Output signal: Analog 4V pk-pk , digital 0:5V
  • Buffer Amplifiers:
    • Input signal : Analog up to 4Vpp
    • BW: DC to 150 KHz
    • Gain : 0 to 10
  • Dual Analog Switch :
    • Input Signal: 2 of Analog inputs up to 4Vpp
    • BW : up to 100 KHz
    • Control Signals : 2 of Digital 0:5V (up to 300 KHz)
    • Output Signal : 1 Analog Output for each Channel
    • Number of Channels : 2 Channels
  • Multiplier Module:
    • Input Signals: 2 Analog Signals
    • BW : up to 1MHz
    • Output Signal : 1 Analog Signal
  • Phase Shifter Module:
    • Input signal : Analog up to 4Vpp
    • BW: DC to 150KHz
    • Control: Phase shift adjustment potentiometer (0:360 Degrees 5% tolerance)
  • Quadrature Phase Splitter module:
    • Frequency Range: 200Hz to 10kHz
    • Phase Response 90 degrees between outputs
    • Input Signal: 1 of Analog inputs up to 4Vpp
    • Output Signal : 2 Analog Output
  • Sequence Generator Module:
    • Input Signal : Digital 0:5V ,1Hz to 10KHz
    • Number of sequences : 4
    • Sequence Lengths 32, 256, 256, 2048
    • Output Signals : Digital 0:5V ( X, Y and Sync )
  • Tunable Low Pass Filter Module:
    • Input signal: Analog up to 4Vpp
    • Cutoff Frequency: 900 Hz to 12 KHz
    • Type: 8th Order, Elliptic
    • Gain: Adjustable
  • Twin Pulse Generator Module:
    • Input Signal : Digital 0:5V ,up to 50KHz
    • Output Signals : 2 Digital 0:5V ( Q1, Q2 )
    • Control : Pulse Width (3 to 25 µs), Pulse Delay (Q2-Q1 10 to 120µs)
  • Comparator Module:
    • Input Signal : Analog 4Vpp
    • Output Signals : Digital 0:5V( Up to 100 KHz)
  • Rectifier Module:
    • Input Signal : Analog 4Vpp (Up to 100KHz)
    • Output Signals : Analog Half wave rectified
  • Diode and RC
    • DIODE & LPF (RC)
    • Cutoff Freq : 2.8kHz (approx)
  • Low pass filter Module:
    • Input Signal: Analog (Audio Range)
    • Cutoff Freq : 2.8 KHz
  • Clipper Module:
    • Operating Range: up to 150 KHz
    • Output Level 1.8Vpk
    • Adjustable Gains 3 steps; x0.8, x8 and x40
  • Voltage Controlled Oscillator Module:
    • Input Signal: digital data 0:5V in FSK mode
    • Analog input 6vpp in VCO mode
    • Two operating frequency ranges: Low 1KHz to 17KHz, High 60KHz to 140Khz
    • Output signal : analog and digital (1KHz to 17KHz , 60KHz to 140Khz)
    • Gain: 0 to 2
  • Lowpass Filter module:
    • Input signal: Analog up to 4Vpp
    • Cutoff Freq: 60 KHz
    • Gain : variable 0 to 5
  • FHSS Frequency Synthesizer:
    • Input signals: digital 0:5 V, CLK input
    • Operating Modes: manual, PN Mode
    • Output signals: 8 level analog voltage, sinusoidal with variable discrete frequencies.
  • Integrate & Dump:
    • Operating modes: integrate & dump; integrate & hold; sample & hold; PWM.
    • Channels: 2 channels
    • Inputs &outputs signals: analog signals up to 4V pk-pk.
    • Clock input: 500Hz to 15kHz, 0:5V digital.
    • Integrator: negative edge triggered
    • Sampler: positive edge triggered
    • Ready: 0:5V, up to 10μs width.
  • Baseband Channel Filters:
  • Input signal : AC or DC, 4 channels with different 3 filters
    • Channels :
      • Channel 1 straight-through
      • Channel 2 Butterworth, 7th order
      • Channel 3 Bessel, 7th order
      • Channel 4 OpFil Linear Phase, 7th order

Advanced modules Code: (ACM100.02)

  • Decision Maker:
    • Input/Output levels depend upon the waveform format selected:
      • TTL : +5V, 0V
      • Unipolar : +2V, 0V
      • Bipolar : +/-2V
    • Waveform formats : NRZ-TTL, NRZ-L, NRZ-M, UNI-RZ, BIPOLAR-RZ, RZ-AMI, BIPHASE-L, DICODE, DUOBINARY
    • Clock input: 250Hz to 3.5kHz
    • Z-MODULATION Modes: Three Modes Available
  • Exclusive-OR gate module :
    • Inputs signals : Digital 0:5V
    • Output signal : gated with HI time of the input CLK
    • CLOCK input : 0:5V, up to 40kHz
  • Monostable Module:
    • Operation modes: normal, extended, expanded
    • CLOCK input: 0:5V , up to 20kHz
    • TRIG signal: selectable active level, active HI or active LO
  • Line Code Encoder Module:
    • Input Signal: Digital 0:5V
    • Input Clock: Digital 0:5V
    • Output Signal: +/-2Vp-p
    • Line Codes Modes :
      • NRZ-L Non-return to zero - level; <bipolar>
      • NRZ-M Nonreturn to zero - mark; <bipolar>
      • UNI-RZ Unipolar return to zero; <unipolar>
      • BIP-RZ Bipolar return to zero; <3-level>
      • RZ-AMI Return to zero - alternate mark invert; <3-level>
      • BiO-L Biphase - level ( Manchester ); <bipolar>
      • DICODE-NRZ Dicode - nonreturn to zero; <3-level>
      • PRECODED DUOBINARY (PARTIAL RESPONSE SIGNALING); <3-level>
  • Line Code Decoder Module:
    • Input signal: +/-2Vp-p
    • Clock input: Digital 0:5V, 100kHz
    • Output signal: Digital 0:5V
  • 100 Khz Channel Filters:
    • Input coupling: AC or DC, 3 channels
    • Channel responses: straight-through, bandpass filter, lowpass filter
  • PCM Encoder Module:
    • Input signal : 2 Analog +/- 2Vp ( Audio Frequency ), CLK Digital 0:5V up to 10KHz
    • Output Signal: Serial, 0:5V Data Stream in Standard offset binary format (8bits) Plus Frame Synchronization Pulse (FS).
  • PCM Decoder Module:
    • Input Signal: Serial, 0:5V Data Stream in Standard offset binary format (8bits) Plus Frame Synchronization Pulse (FS) and CLK
    • Digital 0:5V up to 10KHz.
    • Output signal: 2 Analog +/- 2Vp ( Audio Frequency )
  • Digital Delay:
    • Input signal: 0 to 5V digital signals, clock up to 15 KHz
    • Output signal: 0 to 5V digital signals
    • Delay range: 10μs to 1.5ms, variable selectable ranges
  • Bit Clock Regeneration:
    • Divide by N:
      • Input & Output signals: 0 to 5V digital, Clock input up to 150KHz
      • Divisors: -1, 2, 4 and 8, switch selectable
    • Transition Detector:
      • Input signal: 0 to 5V digital
      • Output Signal: 0 to 5V digital, variable pulse width
    • Loop Filter:
      • Input & Output signals: analog signals 4V pk-pk.
      • Type: conventional, passive, Type 1, second-order loop structure
      • Buffering: active
    • Dual Bandpass Filters:
      • Input & Output signals: analog signals 4V pk-pk
      • Type: fourth-order Chebyshev with 3dB passband ripple
      • Internal Clock: 104kHz, crystal derived
      • External Clock: 0 to 5V digitals, 50kHz to 250kHz
  • M-Level Encoder:
    • Input signal: serial, 0:5V digital, CLK up to 10kHz
    • Operating modes: selectable ( NORM, DEMO)
    • Pattern: circular or rectangular, 4, 8, and 16 point constellations (selectable)
    • Outputs signal: 2.5Vpk-pk
  • M-Level Decoder:
    • Input signal: 2.5Vpk-pk , CLK 0:5V digital up to 10kHz.
    • Offset control: adjustable.
    • Output signal : serial 0:5V digital.
    • Operating modes: selectable (STANDARD,BPSK).
    • Pattern: selectable -circular or rectangular, 4, 8 and 16 point constellations
    • Z-modulation: available in 3 modes, variable level control.
  • Digital Utilities:
    • Digital inverter
      • Input & Output signal: 0 to 5V digital signal , 0 to 150kHz
    • Dividers
      • Six dividers with a different division ratio of 2,3 or 4.
  • Quadrature utilities:
    • Two Multipliers
      • Input & Output signal : DC coupled
      • Bandwidth:1MHz
      • Adjustable gain : 0 to 2
    • Adder
      • Gain : variable 0 to 10
      • Bandwidth : 150 KHz
  • Multiple Sequences Source:
    • Two independent pseudo-noise, two independent Exclusive-OR
    • Input signal: 0 to 5 digital signals
    • Output signals: digital 0 to 5V, analog signals up to 4V pk-pk.
    • Sequence output: length of up to 7 bit to 16 bit
    • Clock Input: up to 250 KHz
    • Reset button: included
  • CDMA Decoder:
    • Variable digital delay
      • Delay: variable, 1µS to 10µS and 100µS to 1mS
      • Input and Output signals : digital 0:5V
    • Pseudo-Noise Sequence Generator
      • CLK Input: more than 250 KHz : digital 0:5V
      • Reset: Allowed
      • Sequence Output: analog signals up to 4V pk-pk , selectable length of up to 7 bit to 16 bit
  • Zero Crossing Detector
    • Input signal: up to 4V pk-pk
    • Output: digital 0:5V
  • Lowpass Filters
    • Tunable from DC to 10 KHz