The Analog Modulations Unit, “EMDA/A”, is a complete analog communications unit designed to explain the basic concepts of analog modulation. It covers the principles of many of the modulation and demodulation techniques used in modern analog communication systems.
The unit provides a basic understanding of the concepts behind analog techniques: Dual Side Band (DSB), Dual Side Band Suppressed Carrier (DSB-SC) and Single Side Band Suppressed Carrier (SSB-SC).
SPECIFICATION
All elements are mounted in a metallic box, with power supply and block diagram
Functional blocks:
- Modulators and demodulators:
- Amplitude Modulation (AM):
Double Side Band modulator (DSB).
Double Side Band Suppressed Carrier modulator (DSB-SC).
Single Side Band Suppressed Carrier AM modulator (SSB-SC).
Radio- Frequency Tuning.
Intermediate-Frequency (I.F) Mixer.
I.F Amplifier.
Envelope detector.
Product detector.
- Frequency Modulation (FM):
Voltage Controlled Oscillator (VCO).
Phase-Locked Loop detector (PLL).
- Analog Generators:
Carrier and audio signals.
- Five analog Inputs.
- Nine analog Outputs.
- 18 test points.
- Two controls.
Cables and Accessories, for normal operation.
Manuals: This unit is supplied with the following manuals: Required Services, Assembly and Installation, Starting-up, Safety, Maintenance & Practices Manuals.
