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Digital Media Evaluation Educational Kit
We are a leading Manufacturer of amplitude shift keying, frequency shift keying, phase shift keying, pulse code modulation, balanced modulator and fiber optic trainer from Ambala, India.
Amplitude Shift Keying
Product Price: Rs 8,000 / PieceGet Best Price
Minimum Order Quantity: 1 Piece
Product Details:
| Brand | SMEI |
| Model Number | SME119 |
Objective :
a) Observe Shift in Carrier Amplitude according to the Binary Input i.e. Digital Clock Signal.
b) Recovery of Data Signal from Demodulator Circuit
Technical Specification :
* In built IC based DC Regulated Power Supply ±12V, +5V/ 250mA
* On board Data Signal Generator, Frequency 5KHz, Amplitude : 4Vpp Approx.
* On board Carrier Signal Generator, Frequency : 100KHz, Amplitude : 5Vpp Approx.
* Modulation using Linear Multiplier (Balanced Modulator using IC LM 1496).
* Demodulation of Diode as Envelop Detector, Low Pass Filter using IC TL 082 followed by Comparator IC using LM 311.
* Glass Epoxy PCB used as front panel & mounted on light weight shock proof plastic cabinet
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Frequency Shift Keying
Product Price: Rs 8,000 / PieceGet Best Price
Minimum Order Quantity: 1 Piece
Product Details:
| Brand | SMEI |
| Model Number | SME120 |
b) Recovery of Modulating Signal from Demodulator Circuit using Phase Locked Loop following by a Low Pass Filter & Comparator
Technical Specification :
* In built IC based DC Regulated Power Supply ±12V/ 250mA
* On board Data Signal Generator, Frequency : 10KHz & 5KHz, Amplitude : 5Vpp Approx.
* On board Carrier Signal Generator, Frequency : 100KHz & 50KHz, Amplitude : 6Vpp Approx.
* Modulation using Linear Multiplier (Balanced Modulator using IC LM 1496) followed by adder Tl081
* Demodulation using Phase Locked Loop using IC 4046 followed by Low Pass Filter TL082 & Comparator IC 3140
* Glass Epoxy PCB used as front panel & mounted on light weight shock proof plastic cabinet
Size (mm) : 330 x 205 x 85
Additional Information:
- Item Code: SME120
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Phase Shift Keying
Price on Request
Product Details:
| Minimum Order Quantity | 1 Piece |
| Brand | SMEI |
| Model Number | SME105 |
b) Recovery of Modulating Signal from Demodulator Circuit
Technical Specification :
* In built IC based DC Regulated Power Supply ±12V & ±5V/ 250mA
* On board Data Generator using IC 7490
* On board Sine Wave Carrier Signal Generator, Frequency : 22KHz, Amplitude : 5Vpp Approx.
* Modulation using IC 4051 & Demodulation using TL 084 & IC 7486
* Glass Epoxy PCB used as front panel & mounted on light weight shock proof plastic cabinet
Size (mm) : 330 x 205 x 85
Additional Information:
- Item Code: SME105
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Pulse Code Modulation
Price on Request
Product Details:
| Minimum Order Quantity | 1 Piece |
| Brand | SMEI |
b) The PCM system is divided in five blocks i.e. Clock Generator, Sample & Hold Amplifier Analog to Digital Converter, Multiplexer, Timing & Control Logic.
Technical Specification :
* In built IC based DC Regulated Power Supply ±12V, +5V/ 500mA
* On board DC supply as modulating signal 0-5V DC.
* On board Clock Signal Generator, Frequency : 7.8KHz & 125KHz, Amplitude : 5Vpp Approx.
* Modulation using Sample & Hold Amplifier IC LF 398, Analog to Digital Converter using IC 0800 Parallel to Serial Converter using IC 74150 multiplexer & Timing and Control Logic using 74160.
* Demodulation of PCM using timing & control using 74160, Digital to Analog Converter using IC 0800 and Low Pass Filter follow by an amplifier using IC 741
* Glass Epoxy PCB used as front panel and housed in a rigid MS powder coated cabinet.
Size (mm) : 410 x 245 x 85
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Balanced Modulator
Product Price: Rs 8,000 / PieceGet Best Price
Minimum Order Quantity: 1 Piece
Product Details:
| Usage/Application | Laboratory |
| Model Name/Number | Balanced Modulator and Demodulator |
| Brand | SMEI |
| Country of Origin | Made in India |
b) Calculate Modulation Index of the Modulated Signal c) Recovery of Modulating Signal from Demodulator Circuit.
Technical Specification :* In built IC based DC Regulated Power Supply ±12V/ 500mA
* On board Sine Wave Audio Frequency Signal Generator, Frequency : 1KHz, Amplitude : 0-2Vpp Approx .
* On board Carrier Signal Generator, Frequency : 455KHz, Amplitude : 2.5Vpp Approx.
* Modulation using Balanced Modulator IC LM 1496
* Demodulation using Diode Detector OA 79 * Glass Epoxy PCB used as front panel & mounted on light weight shock proof plastic cabinet
Size (mm) : 280 x 205 x 85
Additional Information:
- Item Code: SME107
- Production Capacity: 10
- Delivery Time: 2-3 weeks
- Packaging Details: Nicely packed in a box
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Fiber Optic Trainer
Price on Request
Product Details:
| Minimum Order Quantity | 1 Piece |
| Brand | SMEI |
b) Recovery of Modulating Signal from Receiver Circuit.
Technical Specification :
* In built IC based DC Regulated Power Supply ±9V,250mA
* On board optical output through Light Emitting Diode.
* On board Photo Detector.
* Inbuilt Sine and Square wave generator for analog and digital experiment.
* Voice transmission through Microphone.
* Demodulation of voice signal through External speaker.
* 1 meter fiber Cable provided with instrument for signal transmission.
* Block diagram printed on front panel & connections brought out at sockets.
Size (mm) : 432(L) x 330(B) x 76(H)
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Time Division Multiplexer
Price on Request
Product Details:
| Minimum Order Quantity | 1 Piece |
| Brand | SMEI |
Time Division Multiplexer (PCB MODEL)
- Built in +/-5V/350 mA DC Power Supply
- Data Generator 1 K b/s/Channel
- Low High, Logic Low sources
- Time Division Multiplexer - 8 Ch.
- Time Division Demultiplexer - 8 Ch.
- LED indication for channel outputs
- Assembled in Wooden Box with circuit
- screen printed on Glass Epoxy PCB with
- 2mm socket for test points & to see the waveforms
- Set of Patch Chords & Experimental
- Manual.
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