BT
MCM21/EV
ANALOG
COMMUNICATIONS II
(Modulations)
INTRODUCTION
MCM21/EV is one of the experiment boards that constitute the
Interactive Practical Electronics System – I.P.E.S.
It consists of a set of components and circuits for performing
experiments.
The lessons included in this module can be developed in:
- Standard mode: using the switches of the equipment and
consulting the handbook;
- Computerized mode: the interactive software version of
the handbook - SW-D-MCM21/EV - interfaced to the module
via Control Unit SIS3-U/EV, is used. This software inserts circuit
variations and faults automatically enabling the development
of lessons even without teacher’s assistance.
MCM21/EV
Experiment board for studying of the active circuits used in
analog telecommunications.
This board, together with mod. MCM20/EV, creates a complete
system for experiments on the techniques used in analog
transmissions.
TELECOMMUNICATIONS AND TELEMATICS
TRAINING PROGRAM:
• Amplitude modulation: modulation index; linearity
measurement
• Envelope detector and synchronous AM demodulator
• Super heterodyne AM receiver with AGC
• Single side-band modulation (SSB)
• Narrow-band ceramic filters
• Generation of upper (USB) and lower (LSB) side-band
• Product detector
• Frequency Modulation
• Modulation index and linearity
• Foster-Seeley FM demodulator
• Ratio discriminator
• Automatic Frequency Control (AFC)
• Superheterodyne FM receiver with AFC
• Tuned amplifiers: Frequency gain and response, Transformer
and autotransformer impedance matching, Stability,
Alignment, Neutralization
• I.F. amplifier with envelope detector and Automatic Gain
Control
• Frequency mixer with Mosfet Dual Gate; use in
superheterodyne receivers
• Spectrum analysis of the AM/SSB/FM signal
•Troubleshooting
21C-E-BT -MCM21-0
TECHNICAL SPECIFICATION:
BT 16
• 2 VCOs: frequency: 400-1500 kHz; amplitude 0-2Vpp; output
impedance 50 Ohm; frequency modulation signal input
• Sweep: adjustable frequency deviation; output for X-axis
oscilloscope
• RF detector: sensitivity 100 mVpp; adjustable level
• 2 balanced modulators: AM, DSB, USB, LSB;
carrier input 1-900 kHz
• Ceramic filter: 455 kHz
• Frequency converter: Mosfet dual gate; adjustable IF 455 kHz
• Tuned amplifier: 2 stages, Central frequency 455 kHz,
Gain 50 dB, With AGC
• Envelope detector with variable R-C filter
• FM demodulator
•Foster-Seeley
• Ratio discriminator
• Frequency 400-500 kHz
• Automatic Frequency Control
• FM demodulator
• Fault simulation: Possibility to insert 8 faults
• Test and interconnection points, Ø 2 mm
• Rapid modifications to circuits using jumpers
• 37-pin connector to the fault insertion unit
• 8-wire connector to the power supply unit
• Printed circuit board with protective treatment and mimic
diagram
• Module equipped with ABS protection on its lower side
Dimensions: 386 x 248 x 60 mm
REQUIRED
PSLC/EV
POWER SUPPLY UNIT
- NOT INCLUDED -
POWER SUPPLY
±12 Vdc - 0.5A
INCLUDED
STUDENT HANDBOOK: THEORY AND EXERCISES
TEACHER HANDBOOK: WIRING DIAGRAMS
AND SOLUTIONS OF EXERCISES
OPTIONAL
PERSONAL COMPUTER
FAULT INSERTION UNIT SIS3-U/EV AND
MULTIMEDIA SOFTWARE SW-D-MCM21/EV
ELETTRONICA VENETA S.P.A. - 31045 Motta di Livenza (TV) Italy - Via Postumia, 16 - Tel. +39 0422 765 802 - Fax +39 0422 861 901 - E-mail: export@elettronicaveneta.com