Differential PCM Modulation
Order Code: 22236079.4.41
Category: General Lab Equipment I
With panels made in metal case with bench support and the electrical scheme on the front panel. The board shall include the transmitting and the receiving sections of a simplified, but complete DPCM system. The panel shall include th...
SPECIFICATION
- With panels made in metal case with bench support and the electrical scheme on the front panel. The board shall include the transmitting and the receiving sections of a simplified, but complete DPCM system.
- The panel shall include the transmitting section and the receiving one of a simplified but complete DPCM system.
- In the transmitter the sampling procedure shall take place of the phonic signal, of comparison of every sample with the previous one, of numeric coding and serial transmission of the difference signal.
- In the receiver the opposite procedure shall take place of numeric-analog decoding of the differential signal and reconstruction of the phonic signal.
- On the same panel a frequency test signal generator equal to 1250 Hz shall be foreseen.
Technical Features:
- In the transmitter section there shall be the sampling procedure of the voice signal, the comparison of every sample with the previous one, the numerical coding of the difference signal and the serial transmission. In the receiver section there shall be the opposite procedure of numerical-analogue decoding of the received signal and of the voice signal reconstruction.
- Capacity: One voice channel with rated band 300-3400 Hz
- Rated sampling frequency: Continuously variable around 8 kHz.
- Format of the numeric data: 8 Bits at TTL level.
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