Differential Pulse Code Modulation(DPCM) Trainer Manufacturer,Supplier and Exporter in India
Product Code : SCL-CE-12550
Indian Lab Suppliers supplies the Differential Pulse Code Modulation (DPCM) Trainer (Product ID: 12550), part of the Communication Equipment range under Laboratory equipment, a self-contained board built around practical telephone-network-style sampling and audio-processing frequencies, with an onboard DPCM transmitter and receiver.
Note on naming: this board's name is identical to another trainer in our range, so please confirm the exact model with our team. This board samples at 8 kHz with 5 bits per sample (including the sign bit), a telephone-network-style configuration that reduces bandwidth compared to standard 8-bit PCM by 3 bits per sample. This differs from our Differential Pulse Code Modulation and Demodulation Trainer (Product ID 12536, ADC-based design sampling at 2.5 kHz with 8-bit digital output).
Note on scope: for a sampler/quantizer/linear-predictor based DPCM design (16 kHz sampling), see our DPCM/ADPCM Modulation/Demodulation Trainer (Product ID 12585).
Quick Answer
This trainer lets students study DPCM transmission and reception built around practical public-telephone-network sampling and audio-processing frequencies, observing the audio input/output processing stages, control-signal flow (read/write, reset, latch enables, output enables) and the bandwidth saving of 5-bit DPCM samples compared to standard 8-bit PCM.
Key Features
Onboard DPCM transmitter and receiver · onboard signal generator block · onboard audio input processing circuit · onboard audio output processing circuit · clock and complete control-signal section · detailed signal-processing circuit with complete data and control-signal flow.
Key Specifications
| Parameter | Detail |
|---|---|
| Signal generator | Sine and square wave, 300 Hz to 3.4 kHz output |
| Audio blocks | Audio input and output processing circuits |
| Control signals | R/W for ADC, reset, latch enables, output enables |
| Sampling frequency | 8 kHz |
| Bits per sample | 5 bits, including sign bit |
| Bandwidth improvement | 3 bits per sample less than standard 8-bit PCM |
| Interconnections | 2 mm sockets |
| Power supply | ±5V, ±12V DC, 200 mA |
Experiments
Studying the DPCM transmitter and receiver signal chain; observing the audio input and output processing circuits; tracing the control-signal flow (read/write, reset, latch enables, output enables); and comparing the bandwidth requirement of 5-bit DPCM samples against standard 8-bit PCM.
Where This Is Used
This DPCM Trainer is used in electronics and communication engineering education for studying differential pulse code modulation in a telephone-network-style configuration, complementing our broader Electronics Lab Equipment and Engineering Lab Equipment ranges.
Frequently Asked Questions
How is this different from your other DPCM trainer?
This board uses an 8 kHz sampling rate with 5-bit samples in a telephone-network-style configuration, while our other Differential Pulse Code Modulation and Demodulation Trainer (Product ID 12536) uses an ADC-based design sampling at 2.5 kHz with 8-bit output. Please confirm with our team which platform best fits your curriculum requirement.
What bandwidth saving does DPCM offer here compared to PCM?
This trainer's 5-bit-per-sample DPCM scheme uses 3 fewer bits per sample than standard 8-bit PCM, reducing the bandwidth required to carry the same audio signal.
Related Categories
Laboratory · Electronics Lab Equipment · Engineering Lab Equipment
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