Pulse Amplitude Modulation and Demodulation Manufacturer,Supplier and Exporter in India
Product Code : EL-CT-1497
Jlab Export is a leading Pulse Amplitude Modulation and Demodulation Manufacturer,and suppliers in India
Pulse Amplitude Modulation and Demodulation (code EL-CT-1497) is a communication trainer that samples a sine wave audio signal into a pulse amplitude modulated (PAM) signal and then demodulates it to recover the audio. A third experiment shows how the sampling rate affects distortion in the recovered sine wave. It is made by Jain Laboratory Instruments Pvt Ltd (JLab) at its works in Ambala, India.
Specifications
| Parameter | Detail |
|---|---|
| Experiments | Sampling of a sine wave audio signal to form a PAM signal; demodulation of the PAM signal to recover the sine wave audio signal; effect of sampling rate on distortion in the recovered signal |
| Built-in power supply | ±9 V DC at 100 mA, IC regulated |
| Signal circuits | Carrier generator circuit; audio frequency modulating signal; demodulating circuit |
| Mains supply | 230 V ±10%, 50 Hz AC; mains ON/OFF switch, fuse and jewel light |
| Patch cords | Adequate number, stackable from the rear at both ends, 4 mm spring-loaded plugs, half-metre length |
| Connections | Terminals and sockets at appropriate places on the panel for connections and observation of waveforms |
| Documentation | Detailed operating instructions covering object, theory, design procedures, report suggestions and book references |
| Other apparatus required | Cathode ray oscilloscope, 20 MHz (separate item) |
| Quality check | Each trainer is visually inspected before dispatch |
| Pack quantity | Each (sold individually) |
| Minimum order quantity | 10 units |
| Dispatch time | Usually 7–10 working days |
| Product code | EL-CT-1497 |
| Manufacturer | Jain Laboratory Instruments Pvt Ltd (JLab) — OEM |
| Country of origin | India (made in Ambala, Haryana) |
What Is the Pulse Amplitude Modulation Trainer Used For?
In PAM, a train of narrow pulses samples the audio signal, and the height of each pulse follows the signal at the moment it is taken. The original waveform can be rebuilt from those samples only if they come often enough: the sampling theorem puts the minimum at twice the highest frequency in the signal. As the sampling rate is brought down towards that limit and below it, the recovered sine wave becomes visibly distorted, and on this board students watch that happen on the oscilloscope.
PAM is also the sampling step behind time-division multiplexing and pulse code modulation, which JLab covers with the separate trainers linked below. The operating instructions give the object, theory, design procedure, report suggestions and book references for the PAM experiments.
What to Specify When Ordering
- Trainer quantity — the number of units your communication lab needs.
- Laboratory mains — the unit is made for 230 V ±10%, 50 Hz AC, so check that your sockets supply this.
- Further pulse modulation trainers — the sampling, TDM and PCM trainers below are separate items and can be quoted together on one enquiry.
Frequently Asked Questions
Why does the sampling rate change the recovered signal?
Because the samples must be close enough together to describe the waveform. When the rate falls below the limit set by the sampling theorem, the spectrum of the sampled signal overlaps itself (aliasing), and no demodulator can then separate the original audio cleanly, so the output sine wave is distorted.
Does the trainer come with patch cords?
Yes. An adequate number of patch cords is provided, each stackable from the rear at both ends, with 4 mm spring-loaded plugs and a length of half a metre.
Is an oscilloscope needed?
Yes, a 20 MHz cathode ray oscilloscope is required to observe the waveforms and is a separate item. JLab’s Dual Trace Oscilloscope, linked below, can be added to the same quotation.
What details should an export enquiry give?
The quantity, the destination country and port or city, the delivery terms you need (for example FOB or CIF), any packing or labelling instructions, and a tender reference if the order is for a tender.
Who manufactures this PAM trainer?
Jain Laboratory Instruments Pvt Ltd, trading as JLab, at its works in Ambala, Haryana, India.
OEM Manufacturer
JLab is the trading name of Jain Laboratory Instruments Pvt Ltd, an Indian manufacturer of communication trainers and educational laboratory equipment, incorporated in 2017 and based on Hargolal Road, Ambala, Haryana. This PAM trainer is made in JLab’s own works, not purchased from a trader, so institutions, distributors and importers order it from the maker, and later orders and spares are dealt with by the same works. JLab exports worldwide and ships to buyers in every region — for example Belgium in Western Europe, Afghanistan in South Asia, Niger in West Africa, Angola in Central Africa and Eswatini in Southern Africa. Tender buyers can find details on the JLab lab tenders page.
Related Pulse Modulation Trainers
- Analog Signal Sampling and Reconstruction — a sampling theorem trainer that generates PAM by natural sampling, flat-top sampling and a sample/hold circuit.
- TDM Pulse Amplitude Modulation and Demodulation Kit — four analog channels with TDM multiplexing and de-multiplexing and PLL clock regeneration.
- Pulse Code Modulation and Demodulation Trainer — a pulse code modulation trainer with PCM encoder, PCM decoder and LED data display.
- Dual Trace Oscilloscope — a two-channel, 20 MHz oscilloscope with a cathode ray tube display.
See every model in the Communication Trainer range, part of Electronics Lab Equipments.
Request a Quote
For a quotation, press Add To Cart on this page or write via the contact page, giving the number of PAM trainers, the delivery city and country, and any other trainers to include.
Last updated: 22 October 2026
