Differential Phase Shift Keying Modulation and Demodulation Manufacturer,Supplier and Exporter in India
Product Code : EL-CT-1509
Jlab Export is a leading Differential Phase Shift Keying Modulation and Demodulation Manufacturer,and suppliers in India
Differential Phase Shift Keying Modulation and Demodulation (code EL-CT-1509) is a communication trainer board for generating a DPSK (differential phase shift keying) signal and demodulating it back to data in a digital communication lab. The carrier, the bit clock and the data are all generated on the board itself. Jain Laboratory Instruments Pvt Ltd (JLab) builds this trainer at its own facility in Ambala, India.
Specifications
| Parameter | Detail |
|---|---|
| Modulator | IC-1 generates the DPSK (differential phase shift keying) signal |
| Carrier generator | IC-5, generates the carrier signals |
| Bit clock | IC-2A, generates the bit clock |
| Data generator | IC-6, generates different data |
| Demodulator | IC-2 B and C, IC-3 C and D, IC-4 (D-FF2) and transistors 2, 3 and 4 |
| Other components | Adequate number of other electronic components on the board |
| Built-in power supply | ±5 V DC at 100 mA, IC regulated, internally connected |
| 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 giving the object, theory, design procedures, report suggestions and book references |
| Other apparatus required | Dual trace 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-1509 |
| Manufacturer | Jain Laboratory Instruments Pvt Ltd (JLab) — OEM |
| Country of origin | India (made in Ambala, Haryana) |
How Does It Compare with Other JLab Keying Trainers?
| Trainer | What the data changes on the carrier | Built-in DC supply |
|---|---|---|
| This DPSK trainer (EL-CT-1509) | Phase, relative to the previous bit | ±5 V at 100 mA |
| Phase Shift Keying Modulation and Demodulation | Phase, against a fixed reference | ±5 V at 100 mA |
| Frequency Shift Keying Modulation and Demodulation | Frequency | ±12 V at 20 mA and 5 V at 100 mA |
| Amplitude Shift Key Modulation and Demodulation | Amplitude | ±12 V at 50 mA and ±5 V at 50 mA |
Choose the DPSK board when the practical is differential keying, in which each bit is sent as a change or no change of carrier phase from the bit before. The PSK board covers phase keying against a fixed reference phase, while the FSK and ASK boards cover the frequency and amplitude methods.
What Is the DPSK Trainer Used For?
DPSK is a standard experiment in the digital communication lab of electronics and communication engineering degree and diploma courses. The transmitter first encodes the data differentially, so that information sits in the phase difference between successive bit intervals rather than in the absolute phase. The receiver then recovers each bit by comparing the current interval with the previous one, which means it needs no carrier locked to the phase of the transmitter. With the modulator and demodulator on one panel, students can connect the stages with patch cords and view the waveforms on a dual-trace oscilloscope.
What to Specify When Ordering
- Quantity — the number of DPSK trainers for the lab.
- Mains supply — the board is built for 230 V ±10%, 50 Hz AC; check this against the supply at the place of use.
- Other keying trainers — the PSK, FSK and ASK boards compared above are separate items that can be listed on the same enquiry.
Frequently Asked Questions
How does DPSK differ from ordinary PSK?
In PSK each bit is identified by its absolute carrier phase, so the receiver needs a phase reference that matches the transmitter. In DPSK the bit is carried by whether the phase changes from one bit interval to the next, so the receiver only compares neighbouring intervals.
Which circuit stages make up the demodulator?
IC-2 sections B and C, IC-3 sections C and D, IC-4 (D-FF2) and transistors 2, 3 and 4 form the demodulator that turns the DPSK signal back into data.
What else is needed to run the experiments?
A 20 MHz dual trace cathode ray oscilloscope, which is a separate item, for observing the waveforms. JLab’s Dual Trace Oscilloscope, linked below, can be quoted on the same enquiry.
Does DPSK have any drawbacks compared with coherent PSK?
Yes, two. Errors tend to occur in pairs, because a wrongly detected interval is also the reference for the next one, and DPSK needs a slightly higher signal-to-noise ratio for the same error rate. In return the receiver is simpler, which is why both methods are studied side by side.
What should an export enquiry include?
Send the trainer quantity, the destination country with the port or city of delivery, the delivery terms you want (such as FOB or CIF), any packing or labelling instructions and, for a tender, its reference.
Who manufactures this DPSK trainer?
JLab, the trading name of Jain Laboratory Instruments Pvt Ltd, makes it in Ambala, Haryana, India, and quotes for it as the maker.
OEM Manufacturer
JLab is the trading name of Jain Laboratory Instruments Pvt Ltd, an Indian maker of electronics and communication trainers alongside its wider range of laboratory equipment, incorporated in 2017 and located on Hargolal Road, Ambala, Haryana. The DPSK board is assembled in JLab’s own works rather than sourced from a trader, so engineering colleges, polytechnics, dealers and importers deal straight with the manufacturer, and repeat orders and spares come from the same place. JLab exports worldwide and ships to buyers in every region — for example Uganda in East Africa, Hong Kong in East Asia, Libya in North Africa, Bhutan in South Asia and the USA in North America. Tender buyers can find details on the JLab lab tenders page.
Related Communication Lab Equipment
- Dual Trace Oscilloscope — a 20 MHz two-channel oscilloscope with a cathode ray tube, quoted as a separate item.
- Digital Time Division Multiplexing and Demultiplexing — a trainer with an 8 : 1 multiplexer and a 1 : 8 demultiplexer for sharing one line between digital channels.
- Pulse Code Modulation and Demodulation Trainer — converts an analog signal into PCM data with its own encoder and decodes it again.
The full Communication Trainer range sits within Electronics Lab Equipments.
Request a Quote
For a quotation, press the Add To Cart button on this page or write to us through the contact page, giving the number of DPSK trainers, the delivery destination and any oscilloscope or other keying boards you would like quoted with them.
Last updated: 22 October 2026
