Signal Generators

GENERATORS
MIXER-FI-AGC-AM DETECTOR
FM DETECTOR-PHASE MODULATOR
The set composed of the last modules, enables the theoretical
study, with the help of the exercises, of the AM/FM/PM/
DSB/SSB modulations and demodulations, with all necessary
auxiliary sections. NB: All modules must be used.
TECHNICAL SPECIFICATIONS:

• CO 1:
- Output signal: sine
- Frequency switching on 2 ranges: from 400 to 1500kHz
and from 400 to 500kHz
- Amplitude: adjustable from 0 to 2 Vpp
- Output impedance: 50 Ohm
- Inputs: modulating signal, marker, AFC
• VCO 2:
- Output signal: sine
- Frequency: from 400 to 1500 kHz
- Amplitude: adjustable from 0 to 2 Vpp
- Output impedance: 50 Ohm
- Inputs: modulating signal
• Sweep function:
- Sweep frequency: 7 Hz
- Frequency deviation: adjustable
- Output for X-axis oscilloscope
• Detector section:
- Minimum input: 100 mVpp
- Input level: adjustable
• Synchronous function generator:
- Wave-forms: sine; triangle; square
- Amplitude: Adjustable from 0 to 2 Vpp
- Frequency: adjustable from 0.1 1 kHz or from 1 to 10 kHz
- Synchronous square wave: freq. x4 and :4 of the main
signal, adjustable amplitude
• Power supply: ±12 Vdc
• Dimensions: 385x123x40 mm

• AM/DSB modulators
- Modulations: AM, DSB, USB and LSB
- Carrier input: 1-900 kHz
- Modulating input: 0.1-100 kHz
- Adjustable carrier null
- Adjustable output amplitude
• Diode balanced modulator:
- Modulations: DSB, USB and LSB
- Carrier input: 4-20 kHz
- Modulating input: 0.1-4 kHz
• Ceramic filter
- Central frequency: 455 kHz
- Band-width: 3±1 kHz
- Adjustable band-width
• Active filter with variable tuning:
- Central frequency: adjustable from 2 to 8 kHz
- Includes a diode envelope detector
• Low pass active filter: cutting frequency 3.4 kHz
• Power supply: ±12 Vdc
• Dimensions: 192x123x40 mm

• Frequency converter:
- Dual gate Mosfet
- Inputs: local oscillator and RF signal
- Output intermediate frequency: 455 kHz adjustable
- FI filter: dual-tuned LC
• Selective amplifier:
- 2 stages
- Central frequency: 455 kHz adjustable
- Variable R-L-C load impedance
- Gain: 50 dB
- Impedance matching with transformer and autotransformer
- With Automatic Gain Control
• Diode envelope detector:
- Positive or negative envelope detection
- With variable R-C filter
• Power supply: +12 Vdc
• Dimensions: 192x123x40 mm

• Limit amplifier:
- Operating frequency: 455 kHz
- Input amplitude: from 0.5 to 5Vpp
- Output limited amplitude: 1 Vpp
• FM Demodulator of Foster-Seely:
- Operating frequency: adjustable from 400 to 500 kHz
- Input amplitude: 1 Vpp
• Ratio discriminator:
- Operating frequency: adjustable from 400 to 500 kHz
- Input amplitude: 1 Vpp
• Phase detector and FM quadrature detector:
- Operating frequency: adjustable from 400 to 500 kHz
- Input amplitude: 1 Vpp
• Error amplifier with integrative effect for AFC
• Phase modulator:
- Operating frequency: adjustable from 400 to 500 kHz
- Integrator circuit for indirect FM
• Power supply: ±12 Vdc
• Dimensions: 192x123x40 mm
INCLUDED ACCESSORIES
• Theoretical-experimental handbooks
• Microphone
• Cables necessary to the use

OPTIONAL ITEMS
• Module “PLL and applications “
• Module “Noise-Audio”
SOFTWARE
• Multimedia Educational Software
“TELECOMMUNICATIONS”