Advanced Digital & Data Communication Lab 05 - Sigma Trainers ...

3G NETWORKING TRAINER 

05 

Advanced Digital & Data 

Communication Lab

ADPCM MODULATION/ 

DEMODULATION SYSTEM TRAINER 

MODEL - ADPCM100 

This trainer has been designed with a view to provide practical and experimental knowledge of Differential 

Pulse Code Amplitude Modulation/Demodulation technique as practically implemented in Digital Communication 

systems on a Single PCB. 

SPECIFICATIONS 

1. Power supply requirement : 230V AC, 50 Hz. 

2. Built in IC based power supply. 

3. On Board AF Modulating signal generator - Sine wave 

Frequency Range : 300Hz to 3.4 KHz 

Amplitude : 0 to 10 Vpp. 

4. On Board Sampling Pulse signal generator. 

Frequency Range : 10 KHz to 1 MHz. 

5. Built in variable DC power supply (0 to+ 5V) to see the effect of DC on the output waveform. 

6. On Board Input Audio amplifier with Volume control for modulating external signal from Mike (Speech 

signal) or Tape recorder. 

7. On Board Output Audio amplifier with speaker & Volume Control. 

8. Modulator Sections : Diff. Amplifier, Sample and Hold, Quantizer, Encoder, 

Parallel to serial converter, Predictor 

9. Demodulator Sections : Predictor, Serial to parallel converter, 

Latch, D/A converter and Low Pass Filter 

10. All are soldered on single PCB with complete circuit diagram screen-printed. 

11. Standard Accessories : 1. A Training Manual 

2. Connecting Patch cords. 

EXPERIMENTS 

1. To understand Block diagram and working principle 

2. To study theory of Adaptive Differential Pulse Code Modulation 

3. To study of Theory of Adaptive Differential Pulse Code Demodulation 

4. To generate ADPCM signal 

5. To demodulate ADPCM signal. 

6. To see the effect on ADPCM modulated output by varying the amplitude and frequency of modulating signal. 

In keeping view of SIGMA policy of continuous development and improvement, the Specifications may be changed 

without prior notice or obligation. 

Sigma Trainers and Kits 

E-113, Jai Ambe Nagar, 

Near Udgam School, 

Thaltej, 

AHMEDABAD - 380054. 

INDIA. 

Phone(O): +91-79-26852427/ 26850829 

Phone(F): +91-79-26767512/ 26767648 

Fax : +91-79-26840290/ 26840290 

Mobile : +91-9824001168 

Email : sales@sigmatrainers.com 

: sigmatrainers@sify.com 

Web : www.sigmatrainers.com 

Dealer:-

BASE BAND COMMUNICATION TRAINER 

MODEL - BBCOM100 

This trainer has been designed with a view to provide practical / experimental knowledge of Base 

band Communication on a SINGLE P.C.B. 

Modulator Demodulator 


On board Signal Generator 

1. SINE WAVE 

Fixed Frequency : 250Hz, 500Hz, 1 KHz, 2KHz 

Variable Frequency : 1Hz to 30Hz, 0 - 2 Vpp 

2. Sampling Clock 

Frequency : 2 KHz, 16KHz, 32KHz, 64KHz, 128 KHz 

Duty Cycle : 10 - 90% Selectable 

3. D. C. Signal : 0 - 5 V 

4. Clock Frequency : 240 KHz 

5. Frame Frequency : 8 KHz 

6. Data Clock : 512KHz. 

7. Carrier Sine Waves : 500KHz & 1MHz. 

8. 8 bit variable NRZ-L pattern. 

9. 14 bit PRBS signal generation 

Modulation section 

1. Analog signal sampling : Sample & hold, Natural sampling, Flat-top sampling 

2. 4-Channel Analog Time Division Multiplexing 

3. Odd, Even Parity and Hamming Code Generator 

4. Pulse code modulation 

5. Data Encoding NRZ(L), NRZ(M), NRZ(S), Biphase (Manchester, Mark, Space), URZ, Alternate Mark 

Inversion (AMI), unipolar to bipolar and bipolar to unipolar 

6. ASK, FSK, PSK Modulation 

7. Delta / Adaptive Delta / Sigma Delta / CVSD Modulation 

8. Signal compression 

9. PAM / PPM / PWM Modulation. 

10. Audio pre-amplifier with microphone interface 






Thaltej, 


INDIA. 

Phone(O): +91-79-26852427/ 26850829 

Phone(F): +91-79-26767512/ 26767648 

Fax : +91-79-26840290/ 26840290 

Mobile : +91-9824001168 




Dealer:-

Demodulation Section 

1. 2nd order and 4th order low pass filters 

2. 4-Channel Time Division Demultiplexing 

3. PLL clock recovery 

4. Odd, Even Parity and Hamming Code Recovery 

5. Single bit error detection and correction 

6. Pulse code demodulation 

7. Data Decoding NRZ(L), NRZ(M), NRZ(S), Biphase (Manchester, Mark, Space), URZ, Alternate Mark 

Inversion (AMI), ASK, FSK, PSK Demodulation 

8. Delta / Adaptive Delta / Sigma Delta / CVSD Demodulation 

9. Signal Expander 

10. PAM / PPM / PWM Demodulation. 

11. Audio amplifier with headphone / speaker interface 

Accessories : 

1. Power Supply cable 

2. Patch cordsand necessary cable and connector supplies in required numbers

BASE BAND DIGITAL TRANSMITTER 

TRAINER 

MODEL - BBTX100 

This trainer has been designed with a view to provide practical & experimental knowledge of Baseband digital 

transmitter on a SINGLE P.C.B. 



1. To study theory of Baseband Transmission . 

2. To generate NRZ signal using pulse generator. 

3. To generate Gaussian and add it to baseband signal. 


2. On Board Digital Data generator to generate any binary word of 

Word Length : 8 Bits. 

Word Clock Frequency : 10 KHz . 

3. Baseband data Format : NRZ 

4. Gaussian Noise : 0 to 2V rms variable amplitude. 

5. Matched Filter : Integrate and Dump Filter 

6. Decision Threshold : Comparator 

7. Standard Accessories : 1. Experimental and Circuit Description Manual. 

2. Connecting Patch cords. (6 Nos.) 

EXPERIMENTS 

4. To detect baseband signal in the presence of Noise using Integrate and Dump filter and comparator. 

5. To measure Signal to Noise Ratio of Baseband signal using Selective level meter or Spectrum analyser. 






Thaltej, 


INDIA. 

Phone(O): +91-79-26852427/ 26850829 

Phone(F): +91-79-26767512/ 26767648 

Fax : +91-79-26840290/ 26840290 

Mobile : +91-9824001168 




Dealer:-

BCH CODE ENCODER/DECODER 

TRAINER 

MODEL - BCH100 

This trainer has been designed with a view to provide practical and experimental knowledge of BCH code 

Encoder/Decoder. 

1. Variable data rates up to 1.4 Mbps input. 

2. Two commonly used (N, K, t) RS configurations. 

(N, K, t) = (255, 233, 11) 

(N, K, t) = (80, 56, 12) 

3. Automatic frame synchronization. 

4. Single 5V supply 


5. Connectorized 3”x 3” module for ease of prototyping. Standard 40 pin 2mm dual row connectors (Left, 

right, bottom). Interfaces with 5V and 3.3V logic. 

6. All parts are soldered on single PCB with complete circuit diagram Screen-printed in multi-Colour. 






Thaltej, 


INDIA. 

Phone(O): +91-79-26852427/ 26850829 

Phone(F): +91-79-26767512/ 26767648 

Fax : +91-79-26840290/ 26840290 

Mobile : +91-9824001168 




Dealer:-

BIT ERROR RATE MEASUREMENT 

TRAINER 

MODEL - BITERR100 

This trainer has been designed with a view to provide practical/experimental knowledge of Measurement of 

Bit Error rate. 



2. On Board PN sequence Data generator 

Data Length : 16 Bits. 

Bit Clock Frequency : 30 KHz 

Data Format : NRZ. 

Time Frame/Bit Burst : 10000 Bits, 100 Bits and Continues selectable by Switch. 


4. Adder to add PN signal and Gaussian Noise. 


6. Decision Threshold : Comparator and EX-OR circuit. 

7. Error Count Display : Seven Segment 4 digit 

8. All parts are soldered on single PCB with complete circuit diagram screen-printed in multicolor. 


1. To study theory of Gaussian Noise and PN Data. 


EXPERIMENTS 

2. To add Gaussian Noise and PN Data and receive it with matched filter 

3. To measure bit error rate, Noise Power, Signal Power. 

4. To draw Eb/No graphs for different noise levels. 






Thaltej, 


INDIA. 

Phone(O): +91-79-26852427/ 26850829 

Phone(F): +91-79-26767512/ 26767648 

Fax : +91-79-26840290/ 26840290 

Mobile : +91-9824001168 




Dealer:-

LINEAR BLOCK CODE- REED SOLOMON 

CODING TRAINER 

MODEL - BLOCK100 

This trainer has been designed with a view to provide practical and experimental knowledge of Linear 

block code Coding Decoding. 

1. Variable data rates up to 1.4 Mbps input. 

2. Two commonly used (N, K, t) RS configurations. 

(N,K,t) = (255, 233, 11) 

(N,K,t) = (80, 56, 12) 

3. Automatic frame synchronization. 



5. Connectorized 3”x 3” module for ease of prototyping. Standard 40 pin 2mm dual row connectors (left, 

right, bottom). Interfaces with 5V and 3.3V logic. 







Thaltej, 


INDIA. 

Phone(O): +91-79-26852427/ 26850829 

Phone(F): +91-79-26767512/ 26767648 

Fax : +91-79-26840290/ 26840290 

Mobile : +91-9824001168 




Dealer:-

BINARY PHASE SHIFT KEYING MODULATION/ 

DEMODULATION TRAINER 

MODEL - BPSK100 

This trainer has been designed with a view to provide practical / experimental knowledge of BPSK. 

Modulation/Demodulation technique as practically implemented in Digital Communication systems on a single PCB. 




3. On Board Modulating Digital Data signal generator to generate any binary input word with Bit clock & 

Word clock. 


Word Clock Frequency : 8 KHz to 12 KHz. 

Data Format : NRZ & Bipolar NRZ 

4. Modulator Type : Balanced Modulator as Phase modulator. 

5. Demodulator Type : Balanced Modulator as Phase detector. 

6. All parts are soldered on single pin TAGS on single PCB with complete circuit diagram Screen-printed. 

7. Standard Accessories : 1. A Training Manual. 


EXPERIMENTS 

1. To study theory of BPSK Modulation & Demodulation. 

2. To generate BPSK signal 

3. To demodulate BPSK signal using balanced modulators. 

4. To observe BPSK modulated output by for different input binary codes. 






Thaltej, 


INDIA. 

Phone(O): +91-79-26852427/ 26850829 

Phone(F): +91-79-26767512/ 26767648 

Fax : +91-79-26840290/ 26840290 

Mobile : +91-9824001168 




Dealer:-

BINARY PHASE SHIFT KEYING MODULATION/ 


MODEL - BPSK100L 

This trainer has been designed with a view to provide practical / experimental knowledge of BPSK. 






Word clock. 

Data Format : NRZ 

4. Modulator Type : Balanced Modulator as Phase Modulator. 

5. Demodulator Type : Balanced Modulator as Phase detector. Bit clock recovery section. 

6. All parts are soldered on single PCB with complete circuit diagram Screen-printed. 



EXPERIMENTS 

1. To study theory of BPSK Modulation & Demodulation. 

2. To generate BPSK signal 

3. To demodulate BPSK signal using balanced modulators. 






Thaltej, 


INDIA. 

Phone(O): +91-79-26852427/ 26850829 

Phone(F): +91-79-26767512/ 26767648 

Fax : +91-79-26840290/ 26840290 

Mobile : +91-9824001168 




Dealer:-

MODEL - CDMA100-2U 

This trainer has been designed with a view to provide practical / experimental knowledge of 2 Channel CDMA 

Direct Sequence Spread Spectrum Training System a SINGLE P.C.B. 



2. On Board Pseudo-Noise (PN) Code generator. 

Bits : 16 bits 

Clock Frequency : 100 KHz 

3. On Board Digital Data generator : 2 Nos. 

EXPERIMENTS 

1. To study theory of CDMA-DSSS Modulation & Demodulation. 

2. To generate CDMA-DSSS signal 

TWO CHANNEL CDMA-DSSS TRAINER 


Bit Clock Frequency : 6.666 KHz 


4. Spreading Code Mixer and Unipolar to Bipolar Converter section. 

5. Modulator Type : Coherent Binary PSK Modulator 

6. Demodulator Type : Coherent Detector. 

Low pass Filter cutoff Frequency : 105 KHz 

Code Despreading : Using EX-NOR gate. 



3. To demodulate CDMA-DSSS signal using balanced modulators. 






Thaltej, 


INDIA. 

Phone(O): +91-79-26852427/ 26850829 

Phone(F): +91-79-26767512/ 26767648 

Fax : +91-79-26840290/ 26840290 

Mobile : +91-9824001168 




Dealer:-

MODEL - CDMA100L 

This trainer has been designed with a view to provide practical / experimental knowledge of Code Division 

Multiple Access (CDMA) Modulation/Demodulation technique as practically implemented in mobile communication on 

a single PCB. 






3. On Board Digital Data generator to generate any binary input word of 








Code Dispreading : Using EX-NOR gate. 


EXPERIMENTS 





CDMA (DSSS)TRAINER 






Thaltej, 


INDIA. 

Phone(O): +91-79-26852427/ 26850829 

Phone(F): +91-79-26767512/ 26767648 

Fax : +91-79-26840290/ 26840290 

Mobile : +91-9824001168 




Dealer:-

CARRIER CLOCK RECOVERY USING 

PLL AND COSTAS LOOP TRAINER 

MODEL - CK GEN 100 

This trainer has been designed with a view to provide practical & experimental knowledge of the process of 

Carrier clock regeneration from received data stream in digital system on single PCB. 




3. On Board Digital generator -TTL 

Bit Clock Frequency : 70 to 90 KHz 

4. Data transmission by PSK method. 

5. Clock recovery by PLL and Costas loop methods 

6. Standard Accessories : A Training Manual 


2. To study theory of digital transmission. 

3. To regenerate bit clock. 

4. To synchronize the word clock. 

EXPERIMENTS 

5. To observe the effect of asynchronies on analog waveforms. 

6. To understand - S/H - Integrate & Dump process. 

Connecting Patch cords. 






Thaltej, 


INDIA. 

Phone(O): +91-79-26852427/ 26850829 

Phone(F): +91-79-26767512/ 26767648 

Fax : +91-79-26840290/ 26840290 

Mobile : +91-9824001168 




Dealer:-

MEASUREMENT OF CODING GAIN 

MODEL - CODE100 

This trainer has been designed with a view to provide practical/experimental knowledge of Coding Gain 

Measurement. 







Time Frame/Bit Burst : 10000 Bits, 100 Bits and Continuos selectable by Switch. 





7. Error Count Display 

: Seven Segment 4 digit 

8. All parts are soldered on single PCB with complete circuit diagram screen printed in multicolor. 


1. To study theory of Coding Gain. 


EXPERIMENTS 

2. To draw Eb/No graphs for coded and non coded system and calculate coding gain. 






Thaltej, 


INDIA. 

Phone(O): +91-79-26852427/ 26850829 

Phone(F): +91-79-26767512/ 26767648 

Fax : +91-79-26840290/ 26840290 

Mobile : +91-9824001168 




Dealer:-

SPREADING & DISPREADING USING ADDITIVE WHITE 

GAUSSIAN NOISE GENERATOR & FREQUENCY OFFSET 

MODEL - COM1023 

This trainer has been designed with a view to provide practical / experimental knowledge of Spreading & 

Dispreading using additive white Gaussian Noise Generator & Frequency Offset. 















7. All parts are soldered on single pin TAGS on single PCB with complete circuit diagram Screen-printed. 








Thaltej, 


INDIA. 

Phone(O): +91-79-26852427/ 26850829 

Phone(F): +91-79-26767512/ 26767648 

Fax : +91-79-26840290/ 26840290 

Mobile : +91-9824001168 




Dealer:-

BPSK/DPSK & DEPSK MODULATION/ 


MODEL - COM116BDE 

This trainer has been designed with a view to provide practical / experimental knowledge of BPSK, DPSK and 

DEPSK Modulation/Demodulation technique as practically implemented in Digital Communication systems on a 

SINGLE P.C.B. 

EXPERIMENTS 

1. To study theory of BPSK/ DPSK / DEPSK Modulation & Demodulation. 

2. To generate and demodulate BPSK signal 

3. To generate and demodulate DPSK signal 

4. To generate and demodulate DEPSK signal 



2. Built in IC based power supply : +12V, -12V, +5V 

3. On Board Modulating Digital Data signal generator (NRZ) to generate any binary input word 


4. Carrier Clock Frequency : 250KHz 

5. On Board Carrier Sine Waves : 500KHz(0 deg.), 500KHz(180 deg.). 

6. Carrier Modulation : BPSK, DPSK, DEPSK. 








Thaltej, 


INDIA. 

Phone(O): +91-79-26852427/ 26850829 

Phone(F): +91-79-26767512/ 26767648 

Fax : +91-79-26840290/ 26840290 

Mobile : +91-9824001168 




Dealer:-


1. Receiver Clock : Generated by Phase-Lock Loop. 

2. Data Format (decoding) : Dibit Pair (I & Q), Differential Decoding of I & Q Bits 

3. Carrier Demodulation : QPSK, DQPSK. 

QPSK AND DQPSK DEMODULATION 

TRAINER 

MODEL- COM117F-D 

This trainer has been designed with a view to provide practical/experimental knowledge of QPSK and DQPSK 

Demodulation. 

4. Standard Accessories : Experimental and Circuit Description Manual. 

Connecting Patch cords. (6 Nos.) 

EXPERIMENTS 

1. To study theory of QPSK/ DQPSK Modulation & Demodulation. 

2. To demodulate QPSK signal. 

3. To demodulate DQPSK signal. 






Thaltej, 


INDIA. 

Phone(O): +91-79-26852427/ 26850829 

Phone(F): +91-79-26767512/ 26767648 

Fax : +91-79-26840290/ 26840290 

Mobile : +91-9824001168 




Dealer:-







QPSK AND DQPSK MODULATION 

TRAINER 

5. On Board Carrier Sine Waves : 500KHz(0 deg.), 500KHz(90 deg.), 

6. Carrier Modulation : QPSK, DQPSK 

MODEL - COM117F-M 

This trainer has been designed with a view to provide practical/experimental knowledge of QPSK and DQPSK 

Modulation . 

500KHz(180 deg.), 500KHz(270 deg.) 



EXPERIMENTS 

1. To study theory of QPSK/ DQPSK Modulation & Demodulation. 

2. To generate QPSK signal 

3. To generate DQPSK signal 






Thaltej, 


INDIA. 

Phone(O): +91-79-26852427/ 26850829 

Phone(F): +91-79-26767512/ 26767648 

Fax : +91-79-26840290/ 26840290 

Mobile : +91-9824001168 




Dealer:-


This trainer has been designed with a view to provide practical and experimental knowledge of Harmonic 

Analysis and Fourier Demonstration on a SINGLE P.C.B. 




3. Built in Sine wave Generator 

Frequency Range : 300Hz to 3.4 Khz in 2 ranges 


4. Sections : Clock Generator 

Scanning Generator 

Balanced Modulator 

Low Pass Filter 


6. Standard Accessories : A Instructional Manual. 

1. To carry out Fourier analysis 

Connecting wires 






Thaltej, 


INDIA. 

FOURIER SYNTHESES AND HARMONIC 

ANALYSER TRAINER 

2. To carry out Harmonic Analysis of a square wave 

EXPERIMENTS 

Phone(O): +91-79-26852427/ 26850829 

Phone(F): +91-79-26767512/ 26767648 

Fax : +91-79-26840290/ 26840290 

Mobile : +91-9824001168 




Dealer:-

FOURIER SYNTHESIS TRAINER 

MODEL - COM118S 

This trainer has been designed with a view to provide practical and experimental knowledge of Fourier 

Synthesis on a single PCB. 


1. Harmonic Generation Technique : Direct Digital Synthesis (DDS). 

2. Summing Amplifier : Eleven Input 

3. Fundamental Frequency : 1 KHz. 

4. Harmonics Generation : 9 Harmonics, ranges from 2 KHz to 10 KHz. 

5. Fundamental and Harmonics Amplitude : 5Vpp (approx.) 

6. Controllable gain for individual frequency component domain. 

7. On Board Wave forms : 0(sine), 90(cosine), 180(-sine), 270(-cosine) 

8. Mains Supply : 230 V ±10%, 50Hz . 60 Hz on request 

9. Power Consumption : 2.5 VA (approx.) 

10. DC constant generation : -5 V to +5 V 






Thaltej, 


INDIA. 

Phone(O): +91-79-26852427/ 26850829 

Phone(F): +91-79-26767512/ 26767648 

Fax : +91-79-26840290/ 26840290 

Mobile : +91-9824001168 




Dealer:-

NOISE GENERATION AND 

MATCHED FILTER TRAINER 


This trainer has been designed with a view to provide practical & experimental knowledge of Noise Generation 

and Matched Filter on a SINGLE P.C.B. 




3. Noise Generators : 1. PRBS Signal Generator 

2. Gaussian Noise Generator. 

3. Noise and Signal Adder. 

4. Filters : Matched filter. 

5. Code Generator : 8 Bit. 

6. Matched Filter : Integrate and dump filter. 

7. Comparator : Binary comparator. 

8. All are soldered on single pin TAGS on single PCB with complete circuit diagram screen-printed. 

9. Standard Accessories : 1. A Instructional Manual. 

2. Connecting wires 

EXPERIMENTS 

1. To study theory of Noise generator and matched filter. 

2. To generate PRBS (Pseudo Random Binary Sequence) signal 

3. To generate Gaussian noise. 

4. To add PRBS signal and Gaussian White Noise. 

5. To see the effect of Noise on output of Adder and observe S/N ratio. 

6. To detect signal using Matched Filter. 






Thaltej, 


INDIA. 

Phone(O): +91-79-26852427/ 26850829 

Phone(F): +91-79-26767512/ 26767648 

Fax : +91-79-26840290/ 26840290 

Mobile : +91-9824001168 




Dealer:-

NOISE GENERATION TECHNIQUES 

TRAINER 

MODEL - COM120A 

This trainer has been designed with a view to provide practical & experimental knowledge of different types of 

Noise Generation Techniques. 




3. Noise Generators : 1. PRBS White Noise Generator. 

2. Analog White Noise Generator. 

3. Pink Noise Generator. 

4. Filters : 1. Narrow band 

2. Wide band with variable Center frequency and Bandwidth. 




EXPERIMENTS 

1. To study theory of Noise generator and matched filter. 

2. To generate White noise by PRBS (Pseudo Random Binary Sequence) technique. 

3. To generate White noise by Zener diode technique. 

4. To generate Pink noise from White Noise. 

5. To generate Narrow band and Wide band Noise and observe its characteristics. 






Thaltej, 


INDIA. 

Phone(O): +91-79-26852427/ 26850829 

Phone(F): +91-79-26767512/ 26767648 

Fax : +91-79-26840290/ 26840290 

Mobile : +91-9824001168 




Dealer:-

DETECTION DETECTION OF DIGITAL OF BASEBAND SIGNAL USING 

MATCHED USING MATCHED FILTER IN THE FILTER PRESENCE WITH OF NOISE 

MODEL-BITERR100 

MODEL MODEL-COM120N 

- COM120P 

COM120L 


Bit Error rate using matched filter. 






Thaltej, 


INDIA. 

EXPERIMENTS 

1. To study theory of Baseband Transmission . 

2. To generate NRZ using pulse generator. 



5. To observe Baseband signal using Spectrum analyser. 


1. Power supply requirement 


: 230V AC, 50 Hz. 

2. On Board Modulating Digital Data signal generator. 

Word Length : 50% Duty cycle Square NRZ Pulse. 

3. Baseband data Format : NRZ 




7. All parts are soldered on single PCB with multicolor Section wise blocks and complete circuit diagram Screen-printed with true 

value of part. The PCB provided with multi-colour 2mm Testing points and acrylic cover for safety in wooden box. 

8. Standard Accessories : 1. A Training Manual and Connecting Patch cords. 

Phone(O): +91-79-26852427/ 26850829 

Phone(F): +91-79-26767512/ 26767648 

Fax : +91-79-26840290/ 26840290 

Mobile : +91-9824001168 




Dealer:-

NOISE LIMITER CIRCUIT 

MODEL - COM120LM 

This trainer has been designed with a view to provide practical and experimental knowledge of Noise Limiter. 



2. Built in IC based regulated Power supply : +15V, -15V DC/200mA 

3. Following parts provided on Single PCB with connecting terminals. 

IC 741- 1 No 

4. Accessories : A manual having practical details 






Thaltej, 


INDIA. 

Phone(O): +91-79-26852427/ 26850829 

Phone(F): +91-79-26767512/ 26767648 

Fax : +91-79-26840290/ 26840290 

Mobile : +91-9824001168 




Dealer:-

DETECTION OF BASEBAND SIGNAL 

USING MATCHED FILTER WITH NOISE 

MODEL - COM120N 

This trainer has been designed with a view to provide practical & experimental knowledge of detection of 

Baseband signal in the presence of noise. 






Word Clock Frequency : 10 KHz 


4. Baseband data Format : NRZ, Bipolar NRZ, RZ, Bipolar RZ. 






EXPERIMENTS 

1. To study theory of Baseband Transmission. 

2. To generate NRZ, Bipolar NRZ, RZ and Bipolar NRZ signals using pulse generator. 



5. To measure Signal to Noise Ratio of Baseband signal using Selective level meter or Spectrum analyser. 






Thaltej, 


INDIA. 

Phone(O): +91-79-26852427/ 26850829 

Phone(F): +91-79-26767512/ 26767648 

Fax : +91-79-26840290/ 26840290 

Mobile : +91-9824001168 




Dealer:-

NOISE GENERATION AND MEASUREMENT 

OF NOISE FIGURE TRAINER 

MODEL- MODEL NOISE200F COM120NF 

This trainer has been designed with a view to provide practical and experimental knowledge of a general 

circuit of Noise Generation and Measurement of Noise figure on a SINGLE PCB. 







Time Frame/Bit Burst : 10000 Bits, 100 Bits and Continuous selectable by Switch. 





7. Error Count Display : Seven Segment 4 digit 








Thaltej, 


INDIA. 

Phone(O): +91-79-26852427/ 26850829 

Phone(F): +91-79-26767512/ 26767648 

Fax : +91-79-26840290/ 26840290 

Mobile : +91-9824001168 




Dealer:-

NOISE MEASUREMENT TRAINER 

MODEL - COM120NM 

This trainer has been designed with a view to provide practical & experimental knowledge of different types of 

Noise Measurement Techniques. 




3. Noise Generators : 1. PRBS Noise Generator. 

4. Noise Adder 

2. Gaussian Noise Generator. 

3. Pink Noise Generator. 



1. To study theory of Different Noise generators. 


EXPERIMENTS 

2. To measure White noise by PRBS (Pseudo Random Binary Sequence) technique. 

3. To measure Gaussian Noise 

4. To measure Pink noise. 






Thaltej, 


INDIA. 

Phone(O): +91-79-26852427/ 26850829 

Phone(F): +91-79-26767512/ 26767648 

Fax : +91-79-26840290/ 26840290 

Mobile : +91-9824001168 




Dealer:-

NOISE POWER SPECTRAL 

DENSITY TRAINER 

MODEL - COM120SD 


Noise power spectral density. 



2. Built in IC based power supply : +12V, -12V, +5V. 

3 On Board PN sequence Data generator 




Time Frame/Bit Burst : 10000 Bits, 100 Bits and Continuos selectable by Switch. 





8. Error Count Display 

: Seven Segment 4 digit 


1. To study theory of Gaussian Noise and PN Data. 


EXPERIMENTS 

2. To add Gaussian Noise and PN Data and receive it with matched filter 

3. To measure bit error rate, Noise Power, Signal Power. 

4. To measure Signal to Noise Ratio. 

5. To calculate Noise power spectral density. 






Thaltej, 


INDIA. 

Phone(O): +91-79-26852427/ 26850829 

Phone(F): +91-79-26767512/ 26767648 

Fax : +91-79-26840290/ 26840290 

Mobile : +91-9824001168 




Dealer:-

ERROR DETECTION AND CORRECTION 

USING HAMMING CODE TRAINER 


This trainer has been designed with a view to provide practical & experimental knowledge of effect of noise in 

digital system and Error detection and Correction on single PCB. 




3. On Board Modulating Digital Data signal generator to generate any 

binary input word with Bit clock & Word clock. 



Data Format : NRZ 

4. On Board Parity generator : One bit and Four bits. 

5. On Board Noise inserting circuit with variable threshold. 

6. Data receiver with different formats i.e. : 8 Bits Data with No parity bits. 

7 Bits Data with 1 parity bit. 

4 Bits Data with -4 parity check bits. 

7. To generate digital data word with four data & four parity check bits. 

8. All parts are soldered on single PCB of size 24" x15" with complete circuit diagram Screen-printed in multicolor. 


EXPERIMENTS 


2. To insert noise in digital data and observe its effect on received data with different threshold levels. 

3. To generate digital data word (8 Bits) with No parity bits. 

4. To generate digital data word with one parity bit. (7 data + 1 Parity) 


6. To insert error in any one bit in received data word. 

7. To generate & Detect Parity bits and use it to correct error. 

8. To detect the error and correct it using Hamming Codes. 

9. To insert error in more bits in received data word and try to correct it with one parity bit &more parity bits. 






Thaltej, 


INDIA. 

Phone(O): +91-79-26852427/ 26850829 

Phone(F): +91-79-26767512/ 26767648 

Fax : +91-79-26840290/ 26840290 

Mobile : +91-9824001168 




Dealer:-

HAMMING CODES, EVEN AND 

ODD PARITY 

MODEL - COM121L 





2. On Board Modulating Digital Data signal generator to generate any binary input word with Bit clock & Word 

Clock. 



4. Data receiver 

5. All parts are soldered on single PCB with complete circuit diagram screen-printed in multicolour.. 

6. Standard Accessories 

1. The manual having practical details. 

2. All the necessary cables. 

EXPERIMENTS 

1. To insert noise in digital data 







In keeping view of SIGMA policy of continuous development and improvement, the Specifications may be changed without prior 

notice or obligation. 

Sigma Trainers 


Near Udgam School, Thaltej, 


Phone : 079-26852427 / 26767512 

Fax : 079-26840290 / 26759661 

ISDN : 079-26859162 / 26853758 




Dealer:-

ERROR DETECTION AND CORRECTION 

USING HAMMING CODE TRAINER 

MODEL - COM121S 




1. To insert noise in digital data 

EXPERIMENTS 







Word Clock. 



4. On Board Noise inserting circuit 

5. Data receiver with different formats 


7. All parts are soldered on single PCB with complete circuit diagram screen-printed in multi-colour.. 

8. Standard Accessories : 1. The manual having practical details. 



2. All the necessary cables. 






Thaltej, 


INDIA. 

Phone(O): +91-79-26852427/ 26850829 

Phone(F): +91-79-26767512/ 26767648 

Fax : +91-79-26840290/ 26840290 

Mobile : +91-9824001168 




Dealer:-

DIGITAL LINE CODING & DECODING 

TRAINER 


This trainer has been designed with a view to provide practical and experimental knowledge of the process of 

coding and decoding of digital data into different formats on single PCB. 





Word clock. 



4. Data Format Generator : 1. NRZ (Unipolar) 

2. NRZ M 

3. Bipolar NRZ 

4. RZ (Unipolar) 

5. Bipolar RZ 

6. Bi-Phase (Manchester) 

7. AMI (Alternate Mark Inversion) 

5. Decoding Section : Comparator, Bit Clock Recovery and Bit Clock Decoder. 

6. All parts are soldered on single PCB with complete circuit diagram Screen-printed in multicolor. 






Thaltej, 


INDIA. 

EXPERIMENTS 

1. To study theory of digital line coding and decoding. 

2. To generate following different line codes and decode them. 

1. NRZ (Unipolar) 

2. NRZ-M 

3. Bipolar NRZ 

4. RZ (Unipolar) 

5. Bipolar RZ 

6. Bi-Phase (Manchester) 

7. AMI (Alternate Mark Inversion) 

Phone(O): +91-79-26852427/ 26850829 

Phone(F): +91-79-26767512/ 26767648 

Fax : +91-79-26840290/ 26840290 

Mobile : +91-9824001168 




Dealer:-

SPECTRAL ANALYSIS OF LINE CODES 

(UNIPOLAR RZ, NRZ, BIPOLAR NRZ, POLAR RZ, NRZ, 

SPLIT PHASE MANCHESTER) 

MODEL - COM122L 


coding of digital data into different formats. 



2. On Board Modulating Digital Data signal generator. 

Word Length : 50% Duty cycle Square NRZ Pulse. 

3. Line Coding Formats : 1. Unipolar NRZr 

2. Unipolar RZ 

3. Biploar NRZ (AMI) 

4. Polar NRZ 

5. Polar RZ 

6. Biphase (Split phase) Manchester 

4. Line Decoding section : Bit Clock Recovery by PLL 

Bit Clock Decoder 

Comparators 

5. All parts are soldered on single PCB with multicolor Section wise blocks and complete circuit diagram 

Screen-printed with true value fo part. The PCB provided with multi-colour 2mm Testing points and 

acrylic Cover for safety in wooden box. 

6. Standard Accessories : 1. A Training Manual and Connecting Patch cords. 

EXPERIMENTS 


2. To observe spectrum of different line codes on Spectrum Analyzer. 






Thaltej, 


INDIA. 

Phone(O): +91-79-26852427/ 26850829 

Phone(F): +91-79-26767512/ 26767648 

Fax : +91-79-26840290/ 26840290 

Mobile : +91-9824001168 




Dealer:-

MODEL - COM122M 


Manchester coding digital data into different formats on single PCB. 





Word clock. 



4. Data Format Generator : Bi-Phase (Manchester) 

5. Decoding Section : Bit Clock Recovery section 








Thaltej, 


INDIA. 

MANCHESTER CODING/DECODING 

TRAINER 

EXPERIMENTS 

1. To study theory of Manchester coding and decoding. 

2. To generate Biphase (Manchester) codes and decode them. 

Phone(O): +91-79-26852427/ 26850829 

Phone(F): +91-79-26767512/ 26767648 

Fax : +91-79-26840290/ 26840290 

Mobile : +91-9824001168 




Dealer:-

STUDY OF LINE CODES & THEIR 

SPECTRAL ANALYSIS - TRAINER 

MODEL - COM122N 


coding and decoding of digital data into different formats. 






3. Line Coding Formats : 1. NRZ - Unipolar 

2. NRZ - Bipolar 

3. RZ - Unipolar 

4. Bipolar RZ 

5. Bipolar AMI (Alternate Mark Inversion) 

6. Manchester 

4. Line Decoding section : Bit Clock Recovery by PLL 

Bit Clock Decoder 

Comparators 



EXPERIMENTS 


2. To generate different line codes and decode them. 

3. To observe spectrum of different line codes on Spectrum Analyzer. 






Thaltej, 


INDIA. 

Phone(O): +91-79-26852427/ 26850829 

Phone(F): +91-79-26767512/ 26767648 

Fax : +91-79-26840290/ 26840290 

Mobile : +91-9824001168 




Dealer:-

CONVOLUTION CODE 

CODING DECODING TRAINER 

MODEL - CONVO100 

This trainer has been designed with a view to provide practical and experimental knowledge of Convolution 

Coding Trainer. 

1. Convolution encoder for error correction. 

2. Selectable rate and constraint length: 

K = 5, rate 1/7 

K = 7, rates ½, 2/3, ¾, 5/6, 7/8 

K = 9, rates 1/3, ½, 2/3 

3. Continuous or Block mode operation. 

4. Differential decoder. 

5. Maximum throughput (at output): 40 Mbps. 

6. Viterbi decoder for error correction. 

7. Selectable rate and constraint length: 

K = 5, rate 1/7 

K = 7, rates ½, ¾, 7/8 


8. Differential decoder to resolve bit stream inversion. 

9. Maximum throughput (at input): 8Mbps. 

10. 4-bit soft-quantized demodulated bits. 







Thaltej, 


INDIA. 

Phone(O): +91-79-26852427/ 26850829 

Phone(F): +91-79-26767512/ 26767648 

Fax : +91-79-26840290/ 26840290 

Mobile : +91-9824001168 




Dealer:-

CONTINUOUS PHASE PSK (CPSK) 

MODULATION/DEMODULATION TRAINER 

MODEL - CPSK100 

This trainer has been designed with a view to provide practical/experimental knowledge of CPSK 

Modulation/Demodulation on a single PCB. 







3. On Board synchronized RF Carriers 

Frequencies : 200KHz & 160KHz. 

4. Modulator Type : Using two Balanced Modulators with two ASK and adder 

5. Demodulator Type : PLL detector. 










Thaltej, 


INDIA. 

Phone(O): +91-79-26852427/ 26850829 

Phone(F): +91-79-26767512/ 26767648 

Fax : +91-79-26840290/ 26840290 

Mobile : +91-9824001168 




Dealer:-

GENERATION OF CYCLIC CODES 

(CRC CODING & DECODING) 

MODEL - CRC100 

This trainer has been designed with a view to provide practical and experimental knowledge of 

Generation of Cyclic Codes. 




3. 8 bit Digital Data generator to generate any binary input word 

4. 8 bit Digital Data receiver to receive data 

5. Sections : CRC (Cyclic redundancy check) coding and decoding 

6. Data bits : 8 bits 

7. CRC Polynomials : 16 bits 

8. All parts are soldered on single PCB with complete circuit diagram Screen- printed in multi-colour. 


1. To study theory of CRC Coding / Decoding. 

2. To generate CRC signal. 

3. To decode CRC signal. 


EXPERIMENTS 






Thaltej, 


INDIA. 

Phone(O): +91-79-26852427/ 26850829 

Phone(F): +91-79-26767512/ 26767648 

Fax : +91-79-26840290/ 26840290 

Mobile : +91-9824001168 




Dealer:-

CONTINUOUS VARIABLE SLOPE DELTA 

MODULATION DEMODULATION TRAINER 

MODEL - CVSD100 

This trainer has been designed with a view to provide practical and experimental knowledge of Continuous 

variable slope delta (CVSD) Modulation & Demodulation on single P.C.B. 





Frequency Range : 300 Hz to 3.4KHz 

Amplitude : 0 to 5Vpp. 

4. On Board Sampling Pulse signal generator. 

Frequency Range : 2KHz to 32KHz 

5. Sections : CVSD Modulation & CVSD Demodulation 







Thaltej, 


INDIA. 

Phone(O): +91-79-26852427/ 26850829 

Phone(F): +91-79-26767512/ 26767648 

Fax : +91-79-26840290/ 26840290 

Mobile : +91-9824001168 




Dealer:-

DATA CLOCK REGENERATION (FROM NRZ 

AND BI-PHASE DATA) TRAINER 

MODEL - DCKGEN100 

This trainer has been designed with a view to provide practical & experimental knowledge of the process of 

data clock regeneration from received data stream in digital system on single PCB. 




3. On Board AF Modulating signal generator - Sinewave 

Frequency Range : 20 Hz to 20 KHz in 3 ranges 


4. On Board Input Audio amplifier with Volume control for modulating external signal from Mike (Speech 

signal) or Tape recorder. 


6. All parts are soldered on single PCB with complete circuit Diagram screenprinted. 



EXPERIMENTS 



3. To regenerate bit clock. 

4. To synchronize the word clock. 

5. To observe the effect of asychronism on analog waveforms. 

6. To understand - S/H - Integrate & Dump process. 

7. To transmit Voice signal through digital channel and reconstruct at receiver 






Thaltej, 


INDIA. 

Phone(O): +91-79-26852427/ 26850829 

Phone(F): +91-79-26767512/ 26767648 

Fax : +91-79-26840290/ 26840290 

Mobile : +91-9824001168 




Dealer:-

DIFFERENTIAL ENCODED PHASE SHIFT 

KEYING MODULATION/DEMODULATION 

MODEL - DEPSK100 

This trainer has been designed with a view to provide practical / experimental knowledge of DEPSK 

Modulation/Demodulation technique as practically implemented in Digital Communication systems on a SINGLE P.C.B. 





Word clock. 


Word Clock Frequency : 8 to 12 KHz. 

Data Format : NRZ, DNRZ, Bipolar DNRZ 

4. Modulator Type : Balanced Modulator with encoder as Phase modulator. 

5. Demodulator Type : Balanced Modulator with decoder as Phase detector. 




EXPERIMENTS 

1. To study theory of DEPSK Modulation & Demodulation. 

2. To generate DEPSK signal 

3. To demodulate DEPSK signal using balanced modulators. 

4. To observe DEPSK modulated output by for different input binary 






Thaltej, 


INDIA. 

Phone(O): +91-79-26852427/ 26850829 

Phone(F): +91-79-26767512/ 26767648 

Fax : +91-79-26840290/ 26840290 

Mobile : +91-9824001168 




Dealer:-

DIFFERENTIAL PULSE CODE MODULATION/ 


MODEL - DPCM100 

This trainer has been designed with a view to provide practical and experimental knowledge of Differential 

Pulse Code Amplitude Modulation/Demodulation technique as practically implemented in Digital Communication 

systems on a SINGLE PCB. 



2. Built in IC based DC power supply. 

3. On Board AF Modulating signal generator - Sinewave 

Frequency Range : 100Hz to 10 KHz 


4. On Board Sampling Clock Pulse signal generator. 

Frequency Range : 2 KHz to 32 KHz. 

5. Modulator Sections : Diff. Amplifier, Sample and Hold, Quantizer, Encoder, 

Parallel to serial converter, Predictor 

6. Demodulator Sections : Predictor, Serial to parallel converter, 

Latch, D/A converter and Low Pass Filter 

7. All parts are soldered on single PCB with complete circuit diagram screen-printed in multicolor 



EXPERIMENTS 


2. To study theory of Differential Pulse Code Modulation 

3. To study of Theory of Differential Pulse Code Demodulation 

4. To generate DPCM signal 

5. To demodulate DPCM signal. 

6. To see the effect on DPCM modulated output by varying the amplitude and frequency of modulating signal. 






Thaltej, 


INDIA. 

Phone(O): +91-79-26852427/ 26850829 

Phone(F): +91-79-26767512/ 26767648 

Fax : +91-79-26840290/ 26840290 

Mobile : +91-9824001168 




Dealer:-

DPCM AND ADPCM MODULATION/ 


MODEL - DPCM100F 

This trainer has been designed with a view to provide practical and experimental knowledge of DPCM & 

ADPCM Modulation/Demodulation technique on a SINGLE P.C.B. 



2. Built in IC based power supply : +12V, -12V 

3. On Board Modulating sine wave generator 

Frequency Range : 500 Hz. 


4. On Board Sampling Pulse generator : 64, 128, 256, 512 KHz 


6. PCB Data Bits : 8 Bits 

7. Modulators : DPCM and ADPCM Modulators. 

8. Demodulators : DPCM and ADPCM Demodulators. 



EXPERIMENTS 

1. To study theory of DPCM/ ADPCM Modulation & Demodulation. 

2. To generate and demodulate DPCM signal 

3. To generate and demodulate ADPCM signal 






Thaltej, 


INDIA. 

Phone(O): +91-79-26852427/ 26850829 

Phone(F): +91-79-26767512/ 26767648 

Fax : +91-79-26840290/ 26840290 

Mobile : +91-9824001168 




Dealer:-

DIFFERENTIAL PHASE SHIFT KEYING 


MODEL - DPSK100 

This trainer has been designed with a view to provide practical / experimental knowledge of DPSK 






Word clock. 


Word Clock Frequency : 8 to 12 KHz. 




6. All parts are soldered on single PCB with complete circuit diagram Screen-printed in multicolor 



EXPERIMENTS 

1. To study theory of DPSK Modulation & Demodulation. 

2. To generate DPSK signal 

3. To demodulate DPSK signal using balanced modulators. 






Thaltej, 


INDIA. 

Phone(O): +91-79-26852427/ 26850829 

Phone(F): +91-79-26767512/ 26767648 

Fax : +91-79-26840290/ 26840290 

Mobile : +91-9824001168 




Dealer:-

DIFFERENTIAL PHASE SHIFT KEYING 


MODEL - DPSK100L 

This trainer has been designed with a view to provide practical / experimental knowledge of DPSK 

Modulation/Demodulation technique as practically implemented in Digital Communication systems on a SINGLE P.C.B. 

EXPERIMENTS 

1. To study theory of DPSK Modulation & Demodulation. 

2. To generate DPSK signal 





Word clock. 





3. To demodulate DPSK signal using balanced modulators. 








Phone : 079-26852427 / 26767512 

Fax : 079-26840290 / 26759661 

ISDN : 079-26859162 / 26853758 




Dealer:-

DIRECT SEQUENCE SPREAD SPECTRUM 


MODEL - DSSS100 

This trainer has been designed with a view to provide practical / experimental knowledge of Direct Sequence 

Spread Spectrum Modulation/Demodulation. 














Code Despreading : Using EX-NOR gate. 




EXPERIMENTS 









Thaltej, 


INDIA. 

Phone(O): +91-79-26852427/ 26850829 

Phone(F): +91-79-26767512/ 26767648 

Fax : +91-79-26840290/ 26840290 

Mobile : +91-9824001168 




Dealer:-

VOICE COMMUNICATION USING (DSSS) 

DIRECT SEQUENCE SPREAD SPECTRUM - TRAINER 

MODEL - DSSS100V 

This trainer has been designed with a view to provide practical / experimental knowledge of Voice 

communication using Direct Sequence Spread Spectrum. 


















EXPERIMENTS 

1. To study theory of Direct Sequence Spread Spectrum Modulation & Demodulation. 

2. To generate and receive DS-SS modulated signal. 

3. To observe effect of different PN codes on DSSS Out put. 

4. To observe spectrum of DSSS Signal on spectrum analyzer. 






Thaltej, 


INDIA. 

Phone(O): +91-79-26852427/ 26850829 

Phone(F): +91-79-26767512/ 26767648 

Fax : +91-79-26840290/ 26840290 

Mobile : +91-9824001168 




Dealer:-

DTMF ENCODER DECODER TRAINER 

MODEL - DTMF100 

This trainer has been designed with a view to provide practical and experimental knowledge of a DTMF signal 

transmission and reception. 


1. Power Supply : 230 V ±10%, 50 Hz 

2. Sections : DTMF Transmitter and DTMF receiver 

3. Key Board : 4 ×4 Matrix Key Board 

4. Dialer : DTMF (Tone) and Pulse Dialing 

5. Transmission Indication : Audio output of DTMF signal in Loudspeaker. 

6 Receiver Indication : Binary BCD signals 

7. Receiver Display : One seven segment Display to display transmitted digit. 

8. Accessories : Manual and Connection Patch Cords. 






Thaltej, 


INDIA. 

Phone(O): +91-79-26852427/ 26850829 

Phone(F): +91-79-26767512/ 26767648 

Fax : +91-79-26840290/ 26840290 

Mobile : +91-9824001168 




Dealer:-

STUDY OF EQUALIZER’S 

PERFORMANCE PARAMETERS 

MODEL - Eq100 

This trainer has been designed with a view to provide practical/experimental knowledge of Study of 

Equalizer’s Performance parameters. 


2. Equalizer type : Tapped Delay Line/Transversal Filter with different Coefficients 

Bits : 16 Bits. 

3. Correlator Equation : Sin(x)/x 

4. Shift Register Type : CCD/BBD. 



1. To study theory o f Tapped delay line Filter. 



EXPERIMENTS 

2. To observe performance of equalizer by measuring input and output of tapped delay line. 






Thaltej, 


INDIA. 

Phone(O): +91-79-26852427/ 26850829 

Phone(F): +91-79-26767512/ 26767648 

Fax : +91-79-26840290/ 26840290 

Mobile : +91-9824001168 




Dealer:-

ERROR PROBABILITY TRAINER 

MODEL - ERRPRB100 

This trainer has been designed with a view to provide practical & experimental knowledge of Error probability 

on a single PCB. 




3. Noise Generators : 1. PRBS White Noise Generator 

2. Analog White Noise Generator. 

4. Filters : 1. Central signal sampling 

2. Matched filter 

5. Comparator : Binary comparator. 

6. Digital Even counter : 4 digit - 10000 

7. Variable Error Rate : Continuous, 102 and 104. 


9. Standard Accessories : 1. A Instructional Manual 


EXPERIMENTS 

1. To calculate error of probability using PRBS digital data and Gaussian White noise. 






Thaltej, 


INDIA. 

Phone(O): +91-79-26852427/ 26850829 

Phone(F): +91-79-26767512/ 26767648 

Fax : +91-79-26840290/ 26840290 

Mobile : +91-9824001168 




Dealer:-

STUDY OF EYE-DIAGRAM 

USING OSCILLOSCOPE 

MODEL - EYE100 

This trainer has been designed with a view to provide practical/experimental knowledge of Study of Eyediagram 

using Oscilloscope. 







Time Frame/Bit Burst : 10000 Bits, 100 Bits and Continues selectable by Switch. 

3. Gaussian Noise : 0 to 1V RMS variable amplitude. 

4. On Board RF generator 

Frequency : 100KHz to 1MHz 

Amplitude : 0 to 10VPP 

5. Sample system for measurement : ASK Modulation demodulation. 



1. To study theory of Eye diagram. 

2. To measure Eye-diagram using Oscilloscope. 


EXPERIMENTS 






Thaltej, 


INDIA. 

Phone(O): +91-79-26852427/ 26850829 

Phone(F): +91-79-26767512/ 26767648 

Fax : +91-79-26840290/ 26840290 

Mobile : +91-9824001168 




Dealer:-

EYE-DIAGRAM TRAINER 

MODEL - EYE100L 

This trainer has been designed with a view to provide practical/experimental knowledge of Study of Eyediagram 

using Oscilloscope. 







Time Frame/Bit Burst : 10000 Bits and Continuos selectable by Switch. 



5. Sample system for measurement : ASK Modulation demodulation. 

6. All parts are soldered on single PCB with complete circuit diagram screen printed in multicolor. 


1. To carry out Eye-diagram Measurement Setup. 


EXPERIMENTS 







Phone : 079-26852427 / 26767512 

Fax : 079-26840290 / 26759661 

ISDN : 079-26859162 / 26853758 




Dealer:-

FDMA TRAINER 

MODEL- FDMA100 

This trainer has been designed with a view to provide practical and experimental knowledge of FDMA on 

SINGLE P.C.B. 





Frequency Range : 20 Hz to 20 KHz in 3 ranges 


4. On Board Main RF carrier signal generator. 



5. On Board Sub-carrier signal generator. 

Frequencies : 16 KHz and 32 KHz. 

Amplitude : TTL level. 

6. On Board Pilot signal generator 

Frequencies : 4 KHz. 

7. On Board Input Audio amplifier with Volume control for modulating external signal from Mike or Tap 

Recorder. 


9. Multiplexer Type : Balanced modulators and Band pass filters. 

Demultiplexer Type : Balanced modulators and Band pass filters. 









Thaltej, 


INDIA. 

Phone(O): +91-79-26852427/ 26850829 

Phone(F): +91-79-26767512/ 26767648 

Fax : +91-79-26840290/ 26840290 

Mobile : +91-9824001168 




Dealer:-

FREQUENCY HOPING SPREAD SPECTRUM 

MODULATION TRAINER 

MODEL - FHSS100 

This trainer has been designed with a view to provide practical / experimental knowledge of Frequency hoping 

Spread Spectrum Modulation/Demodulation technique as practically implemented in Digital Communication systems. 




3. On Board Pseudo-Noise Random Sequence (P.R.B.S.) code generator. 

4. On Board Modulating Digital Data signal generator to generate any binary input word with Bit Clock & 

Word clock. 


Bit Clock Frequency : 8 KHz to 12 KHz. 


5. Built-in Sinusoidal Carrier signal generator. 

6. Modulator Type 

FH Modulator : M-ray F.S.K modulator 

7. Demodulator Type 

FH Demodulator : Non-Coherent M-ary Detector. 



EXPERIMENTS 

1. To study theory of Frequency Hoping Spread Spectrum Modulation & Demodulation. (FH-SS) 

2. To generate FH-SS modulated signal. 

3. To demodulate FH-SS modulated signal. 






Thaltej, 


INDIA. 

Phone(O): +91-79-26852427/ 26850829 

Phone(F): +91-79-26767512/ 26767648 

Fax : +91-79-26840290/ 26840290 

Mobile : +91-9824001168 




Dealer:-

STUDY OF FRAMING AND MARKER WITH 

VOICE CODING TRAINER 

MODEL -FRCODING100 

This trainer has been designed with a view to perform practicals of generating frames and makers in time division 

multiplexing process for PCM. 



2. Built in IC based power supply : +15V, -15V, +5V. 

3. Data Clock : 512 Khz 

4. Frame Frequency : 8 Khz 

5. Switching : Time Division Multiplexing 

6. No. of Channels : Total 8 . 

One for Audio, One for Marker and 6 for Data input with Switch and LED 

7. Analog Communication : Using Sine Wave Generator or with Dynamic mike and speaker. 

8. Frame Maker : 8 bit user selectable markers 

9. Modulation Technique : Pulse Code Modulation using Motorola MC145502 

10 .Standard Accessories : Experimental and Circuit Description Manual. 

1. 8 channel time division multiplexing 

2. Framing and Maker concept 

3. PCM Voice coding and decoding 


EXPERIMENTS 






Thaltej, 


INDIA. 

Phone(O): +91-79-26852427/ 26850829 

Phone(F): +91-79-26767512/ 26767648 

Fax : +91-79-26840290/ 26840290 

Mobile : +91-9824001168 




Dealer:-

GROUP DELAY IN COMMUNICATION 

CHANNEL TRAINER 

MODEL - GDL100 

This trainer has been designed with a view to provide practical & experimental knowledge of a general circuit 

of Group Delay in Communication Channel on a SINGLE PCB. 




3. Built in AF Modulating signal generator - 100Hz to 1KHz. 

4. Built in RF carrier signal generator - 100KHz. 

5. Built in Ring Modulator. 

6. All parts are soldered on single PCB with complete circuit diagram screen-Printed with fault creating facility. 

7. Instruments required for : 1. CRO - dual trace testing 

2. Digital Voltmeter 

3. Digital Frequency counter 

8. Standard Accessories : 1. A teaching manual 

2. Set of Patch cords. 






Thaltej, 


INDIA. 

Phone(O): +91-79-26852427/ 26850829 

Phone(F): +91-79-26767512/ 26767648 

Fax : +91-79-26840290/ 26840290 

Mobile : +91-9824001168 




Dealer:-

GAUSSIAN MINIMUM SHIFT KEYING (GMSK) 

MODULATION & DEMODULATION TRAINER 

MODEL - GMSK100 

This trainer has been designed with a view to provide practical/experimental knowledge of Gaussian Minimum 

shift keying Trainer (GMSK) on a SINGLE PCB. 

Modulation Section: - 

1. Continuous phase FSK (CPFSK) 

2. Minimum shift keying (MSK) 

3. Gaussian frequency shift keying (GMSK) 

4. Gaussian minimum shift keying (GMSK) 

5. Programmable 2-, 4-, 8-ary FSK 

6. Programmable modulation index h. 


7. Two selectable Gaussian filter BT product : 0.5 and 0.3. 

8. Programmable data rates up to 30/20/10 Mbps. (8-, 4-, 2-ary FSK) 

9. Internal generation of pseudo-random bit stream and unmodulated carrier for test purposes. 

10. On-board or external clock selection. 

11. Connectorized 3”x 3” module for ease of prototyping. Standard 40 pin 2mm dual row connectors (left, right). 

Single 5V supply with reverse voltage and over voltage protection. Interfaces with 3.3V LVTTL logic. 

Demodulation Section: - 

1. Demodulator for continuous phase FSK (CPFSK) and its derivatives: MSK, GFSK , GMSK 

2. Programmable 2-, 4-, 8-ary FSK 

3. Programmable modulation index h [0.125 to 4] 

4. Programmable data rates up to 30/20/10 Mbps. (8-, 4-, 2-ary FSK). 

5. Coherent demodulator for better BER performances. 

6. Connectorized 3”x 3” module for ease of prototyping. Standard 40 pin 2mm dual row 

7. Connectors (left, right). Single 5V supply with reverse voltage and overvoltage protection Interfaces with 3.3V 

LVTTL 






Thaltej, 


INDIA. 

Phone(O): +91-79-26852427/ 26850829 

Phone(F): +91-79-26767512/ 26767648 

Fax : +91-79-26840290/ 26840290 

Mobile : +91-9824001168 




Dealer:-

LONGITUDINAL REDUNDANCY CHECK 

(LRC CODING & DECODING) 

MODEL - LRC100 

This trainer has been designed with a view to provide practical and experimental knowledge of Longitudinal 

Redundancy Check Coding Decoding. 






5. Sections : LRC (Longitudinal Redundancy Check) coding and decoding 


7. LRC Polynomials : 16 bits 



1. To study theory of LRC Coding / Decoding. 

2. To generate LRC signal. 

3. To decode LRC signal. 


EXPERIMENTS 






Thaltej, 


INDIA. 

Phone(O): +91-79-26852427/ 26850829 

Phone(F): +91-79-26767512/ 26767648 

Fax : +91-79-26840290/ 26840290 

Mobile : +91-9824001168 




Dealer:-

MINIMUM SHIFT KEYING MODULATION 


MODEL - MSK100 

This trainer has been designed with a view to provide practical / experimental knowledge of study of MSK 

Modulation & Demodulation on single PCB.. 







3. On Board synchronized RF Carriers 

Frequencies : 200KHz & 160KHz. 

4. Modulator Type : Using two Balanced Modulators with two ASK and adder 

5. Demodulator Type : PLL detector. 


7. All parts are soldered on single PCB with complete circuit diagram screen-printed in multi-colour. 



EXPERIMENTS 

1. To study theory of MSK Modulation & Demodulation. 

2. To generate MSK signal 

3. To demodulate using PLL. 

4. To observe MSK modulated output for different input binary codes. 






Thaltej, 


INDIA. 

Phone(O): +91-79-26852427/ 26850829 

Phone(F): +91-79-26767512/ 26767648 

Fax : +91-79-26840290/ 26840290 

Mobile : +91-9824001168 




Dealer:-





Frequency Range : 300 Hz to 3.4 Khz 


4. On Board Main RF carrier signal generator. 



5. On Board Sub-carrier signal generator. 

Frequencies : 16 KHz and 32 KHz. 

Amplitude : TTL level. 

6. On Board Pilot signal generator 

Frequencies : 4 KHz. 

7. On Board Input Audio amplifier with Volume control for modulating external signal from Mike or Tape 

Recorder. 

ORTHOGONAL FREQUENCY 

DIVISION MULTIPLEXING (OFDM) TRAINER 

MODEL- OFDM100 

This trainer has been designed with a view to provide practical and experimental knowledge of OFDM on 

SINGLE PCB. 


9. Multiplexer Type : Balanced modulators and Band pass filters. 

Demultiplexer Type : Balanced modulators and Band pass filters. 

10. All parts are soldered on single PCB with complete circuit diagram screen-Printed in multicolor. 








Thaltej, 


INDIA. 

Phone(O): +91-79-26852427/ 26850829 

Phone(F): +91-79-26767512/ 26767648 

Fax : +91-79-26840290/ 26840290 

Mobile : +91-9824001168 




Dealer:-

PRBS GENERATOR 

MODEL - PRBS100 

This trainer has been designed with a view to provide practical and experimental knowledge of varibale Bit PN 

sequence generator. 




3. PN Sequence generator 

Bits : 2 to 8 

Bit Frequency : 30 KHz 

Sequence Length : 7 to 255. 


1. To generate variable length PN sequence. 

2. To observe their spectrum on Spectrum analyzer. 


EXPERIMENTS 






Thaltej, 


INDIA. 

Phone(O): +91-79-26852427/ 26850829 

Phone(F): +91-79-26767512/ 26767648 

Fax : +91-79-26840290/ 26840290 

Mobile : +91-9824001168 




Dealer:-

16-BIT PN SEQUENCE GENERATOR 



variable Bit PN sequence generator. 




3. PN Sequence generator 

Bits : 2 to 16 

Bit Frequency : 30 KHz 

Sequence Length : 7 to 255. 


5. Standard Accessories : A Training Manual. 

1. To generate variable length PN sequence. 

2. To observe their spectrum on Spectrum analyzer. 


EXPERIMENTS 






Thaltej, 


INDIA. 

Phone(O): +91-79-26852427/ 26850829 

Phone(F): +91-79-26767512/ 26767648 

Fax : +91-79-26840290/ 26840290 

Mobile : +91-9824001168 




Dealer:-

PSEUDO-RANDOM CODE GENERATOR 

WITH CRT DISPLAY 


It is useful for developing &Testing both spread spectrum and conventional data communication System. 



3. PRBS Noise Signal generator 

Frequency Range : All frequencies. 

Amplitude : TTL 

4. AF Signal generator - Sine wave 

Frequency Range : 300 Hz to 3.4 KHz 


5. Mixer section to mix audio with noise signal 


1. To generate PRBS Noise. 

2. To calibrate amplitude range. 



EXPERIMENTS 

3. To mix PRBS Noise with Sine wave input signal and vary S/N ratio. 






Thaltej, 


INDIA. 

Phone(O): +91-79-26852427/ 26850829 

Phone(F): +91-79-26767512/ 26767648 

Fax : +91-79-26840290/ 26840290 

Mobile : +91-9824001168 




Dealer:-

P-N SEQUENCE GENERATOR 

& DETECTOR TRAINER 


This trainer has been designed with a view to provide practical and experimental knowledge of PN sequence 

generator & Detector. 



3. PRBS Noise Signal generator 

Frequency Range : All frequencies. 

Amplitude : TTL 

4. AF Signal generator - Sine wave 

Frequency Range : 300 Hz to 3.4 KHz 


5. Mixer section to mix audio with noise signal 

6. Detector section 

7. Standard Accessories : A Training Manual. 

1. To generate PRBS signal 

2. To detect PRBS signal 



EXPERIMENTS 






Thaltej, 


INDIA. 

Phone(O): +91-79-26852427/ 26850829 

Phone(F): +91-79-26767512/ 26767648 

Fax : +91-79-26840290/ 26840290 

Mobile : +91-9824001168 




Dealer:-

8-PSK MODULATION/ 


MODEL - PSK100-8 

This trainer has been designed with a view to provide practical / experimental knowledge of 8-P.S.K. 

Modulation/Demodulation on a single PCB. 





Word clock. 



Data Format : NRZ & Bipolar NRZ 

4. Modulator Type : Balanced Modulator as Phase Modulator. 

5. Demodulator Type : Balanced Modulator as Phase detector. Bit clock recovery section. 




EXPERIMENTS 

1. To study theory of PSK Modulation & Demodulation. 

2. To generate PSK signal 

3. To demodulate PSK signal using balanced modulators. 

4. To observe PSK modulated output by for different input binary codes. 

5. To observe PSK modulated output by varying the bit clock frequency. 






Thaltej, 


INDIA. 

Phone(O): +91-79-26852427/ 26850829 

Phone(F): +91-79-26767512/ 26767648 

Fax : +91-79-26840290/ 26840290 

Mobile : +91-9824001168 




Dealer:-

16-QAM MODULATION/DEMODULATION 

TRAINER 

MODEL - QAM100-16 

This trainer has been designed with a view to provide practical/experimental knowledge of 16-QAM 

Modulation/Demodulation technique as practically implemented in Digital Communication systems on a SINGLE PCB. 



2. On Board Modulating Digital Data signal generator to generate any binary input word with Bit clock & word 

clock. 



Data Format : NRZ, Even Bits I and Odd bits Q signals. 

3. On Board synchronized RF Carrier : 1.28 MHz - Sine & Cosine. 

4. Modulator Section : Serial to Parallel Converter 

Two to Four level PAM converter 

Using two Balanced Modulators with two PSK and adder 

5. Demodulator Type : Balanced Modulator detectors. 

Four to Two level converter 

Parallel to Serial Converter 


7. All parts are soldered single PCB with complete circuit diagram screen-printed in multicolor. 



EXPERIMENTS 

1. To study theory of 16-QAM Modulation & Demodulation. 

2. To generate QAM signal and demodulate it 

3. To observe QAM modulated output by for different input binary codes. 






Thaltej, 


INDIA. 

Phone(O): +91-79-26852427/ 26850829 

Phone(F): +91-79-26767512/ 26767648 

Fax : +91-79-26840290/ 26840290 

Mobile : +91-9824001168 




Dealer:-

QUADRATURE AMPLITUDE MODULATION/ 


MODEL - QAM100 

This trainer has been designed with a view to provide practical/experimental knowledge of QAM 

Modulation/Demodulation technique as practically implemented in Digital Communication systems on a SINGLE PCB. 





clock. 

Bit Clock Frequency : 80 KHz. 

Word Clock Frequency : 10 KHz. 


Data Format : NRZ, 0° (I) and 90° (Q) signals. 

4. Modulator Type : Balanced Modulator as QAM modulator. 

5. Demodulator Type : Balanced Modulator as QAM demodulator. 

5. All parts are soldered on single PCB with complete circuit diagram Screen-printed in multi-colour 



EXPERIMENTS 

1. To study theory of QAM Modulation & Demodulation. 








Thaltej, 


INDIA. 

Phone(O): +91-79-26852427/ 26850829 

Phone(F): +91-79-26767512/ 26767648 

Fax : +91-79-26840290/ 26840290 

Mobile : +91-9824001168 




Dealer:-

QAM/DQAM DEMODULATION TRAINER 

MODEL - QAM100F-D 

This trainer has been designed with a view to provide practical/experimental knowledge of QAM, DQAM 

Demodulation technique on a SINGLE P.C.B. 


1. Receiver Clock : Generated by Phase-Lock Loop. 

2. Data Format (decoding) : Tribit decoding (I, Q & C), Differential Decoding 

3. Carrier Demodulation : 8-QAM/DQAM 

4. Standard Accessories : Experimental and Circuit Description Manual. 


EXPERIMENTS 

1. To study theory of QAM/ DQAM Modulation & Demodulation. 

2. To demodulate QAM signal 

3. To demodulate DQAM signal 






Thaltej, 


INDIA. 

Phone(O): +91-79-26852427/ 26850829 

Phone(F): +91-79-26767512/ 26767648 

Fax : +91-79-26840290/ 26840290 

Mobile : +91-9824001168 




Dealer:-

QAM/DQAM MODULATION TRAINER 

MODEL - QAM100F-M 

This trainer has been designed with a view to provide practical/experimental knowledge of QAM, DQAM 

Modulation technique on a SINGLE P.C.B. 







5. On Board Carrier Sine Waves : 500KHz(0 deg.), 500KHz(90 deg.), 

6. Carrier Modulation : QAM, DQAM 

500KHz(180 deg.), 500KHz(270 deg.) 



EXPERIMENTS 

1. To study theory of QAM/ DQAM Modulation & Demodulation. 

2. To generate QAM signal 

3. To generate DQAM signal 






Thaltej, 


INDIA. 

Phone(O): +91-79-26852427/ 26850829 

Phone(F): +91-79-26767512/ 26767648 

Fax : +91-79-26840290/ 26840290 

Mobile : +91-9824001168 




Dealer:-

8-QAM MODULATION/DEMODULATION 

TRAINER 

MODEL - QAM100K 

This trainer has been designed with a view to provide practical/experimental knowledge of 8-QAM 

Modulation/Demodulation on a SINGLE PCB. 





clock. 

Bit Clock Frequency : 80 KHz. 

Word Clock Frequency : 10 KHz. 


Data Format : NRZ, 0° (I) and 90° (Q) signals. 

4. Modulator Type : Balanced Modulator as QAM modulator. 

5. Demodulator Type : Balanced Modulator as QAM demodulator. 

5. All parts are soldered on single PCB with complete circuit diagram Screen-printed in multi-colour 



EXPERIMENTS 









Thaltej, 


INDIA. 

Phone(O): +91-79-26852427/ 26850829 

Phone(F): +91-79-26767512/ 26767648 

Fax : +91-79-26840290/ 26840290 

Mobile : +91-9824001168 




Dealer:-

MEASUREMENT OF 

BANDWIDTH EFFICIENCY OF QAM 

MODEL - QAM100N 


Bandwidth efficiency of QAM. 




clock. 



Data Format : NRZ, Even Bits I and Odd bits Q signals. 

3. On Board synchronized RF Carrier : 1.28 MHz - Sine & Cosine. 

4. Modulator Section : Serial to Parallel Converter 

Two to Four level PAM converter 

Using two Balanced Modulators with two PSK and adder 

5. Demodulator Type : Balanced Modulator detectors. 

Four to Two level converter 

Parallel to Serial Converter 


7. All parts are soldered on hollow tags of 0.1" diameter with height of 0.4" on the front side of single PCB of size 18” 

x12” with complete circuit diagram screen printed in multicolor on front side with parts at the same place. The 

acrylic cover is fitted on PCB to safeguard parts on front side in elegant wooden box having lock and key. The testing 

points are provided with 1.25" tags to connect CRO probe. True measured colored waveforms are given on panel. 



EXPERIMENTS 









Thaltej, 


INDIA. 

Phone(O): +91-79-26852427/ 26850829 

Phone(F): +91-79-26767512/ 26767648 

Fax : +91-79-26840290/ 26840290 

Mobile : +91-9824001168 




Dealer:-

QUADRATURE AMPLITUDE SHIFT KEYING 

(QPSK) TRAINER 

MODEL- QASK100 

This trainer has been designed with a view to provide practical/experimental knowledge of QASK Modulation 

/Demodulation technique on a Single PCB. 




Word clock. 

Bit Clock Frequency : 80KHz 



Data Format : NRZ, (0 degree) I and (90 degree) Q signals. 

3. Modulator Type : Balanced Modulator as QASK Modulator 

4. Demodulator Type : Balanced Modulator as QASK Demodulator 

VCO with 0 degree and 90 degree Signals. 

5. All parts are soldered on single PCB with complete circuit diagram Screen-printed in multi-colour. 



EXPERIMENTS 

1. To study theory of QASK Modulation & Demodulation. 

2. To generate QASK signal and demodulate it 

3. To observe QASK modulated output by for different input binary codes. 






Thaltej, 


INDIA. 

Phone(O): +91-79-26852427/ 26850829 

Phone(F): +91-79-26767512/ 26767648 

Fax : +91-79-26840290/ 26840290 

Mobile : +91-9824001168 




Dealer:-

REED SOLOMON ENCODER/ 

DECODER TRAINER 

MODEL - RSOLO100 


Reed-Solomon encoder/decoder on single PCB. 

1. Reed-Solomon error correction encoder. 

2. Variable data rates up to 40 Mbps output. 


3. Compatible with Intelsat (IESS-308) and DVB (ETS 300 421) standards and other commonly used (N, K, t) 

RS configurations. 

4. Supports multiple codeword lengths N and correction powers t. 


6. Connectorized 3”x 3” module for ease of prototyping. Standard 40 pin 2mm dual row connectors (left, right, 

bottom). Interfaces with 5V and 3.3V logic. 







Thaltej, 


INDIA. 

Phone(O): +91-79-26852427/ 26850829 

Phone(F): +91-79-26767512/ 26767648 

Fax : +91-79-26840290/ 26840290 

Mobile : +91-9824001168 




Dealer:-

SPECTRUM ANALYZER TRAINER 

MODEL - SA100 


Spectrum Analyser. 




3. Spectrum Analyzer 

Frequency Range : 60-200 KHz. 

4. Digital Frequency Counter - 

Frequency Range : 60-200 KHz. 

5. On board AM modulation Signal for Side band measurement. 

6. All parts are soldered on single PCB with complete circuit diagram Screen-printed in multi-colour. 


1. To understand circuit of Spectrum Analyzer. 

2. To understand VCO and Digital Frequency circuit. 

2. Connecting Patch cords 

EXPERIMENTS 

3. To use Spectrum Analyzer to measure side bands in AM modulated signal 






Thaltej, 


INDIA. 

Phone(O): +91-79-26852427/ 26850829 

Phone(F): +91-79-26767512/ 26767648 

Fax : +91-79-26840290/ 26840290 

Mobile : +91-9824001168 




Dealer:-

SPECTRUM ANALYSER 

APPLICATION DEMONSTRATIONS 

MODEL - SA100S 


Spectrum Analyser. 


Application I 

Filter Response : Four Filters, Very Precisely Designed for checking filter responses on spectrum Analyzer. 

Types of Filters are 

01. Low pass filter (Cut off 115MHz approx) 

02. High pass filter (Cut off 100MHz approx) 

03. Wide band pass filter (cut off 25MHz -280MHz approx) 

04. Notch Filter or Narrow band reject filter (cut off 95MHz l60MHz approx) 

Application II. 

DC Amplifier frequency Response A well designed DC Amplifier having 3dB cut off bandwidth of approx. 130MHz. 

Application III 

Harmonic Display & Analysis: A Function generator of frequency range approx. 40KHz -400KHz and 200KHz -2MHz 

having sine, square, & triangular output with frequency variation and output Level variation. Anyone output could be 

given to spectrum Analyzer for harmonic display. 

Application IV 

Cable TV application: Three Channel modulator & one mixer is cascaded channel modulations have Audio and Video 

Inputs. The output of modulators and mixer can be seen on spectrum Analyzer. 

Application V 

Live Signal Application: 

Four Types of Signal can be seen on spectrum Analyzer 

01. Mobile phone forward and reverse link frequency. 

02. Cordless phone transmitting & receiving frequencies 

03. FM Radio Reception (Demodulated Audio Output) 

04. TV Signal Reception (Demodulated Audio Output) 






Thaltej, 


INDIA. 

Phone(O): +91-79-26852427/ 26850829 

Phone(F): +91-79-26767512/ 26767648 

Fax : +91-79-26840290/ 26840290 

Mobile : +91-9824001168 




Dealer:-

MODEL - SDMA100 

This trainer has been designed with a view to provide practical / experimental knowledge of Space division 

technique on a SINGLE P.C.B. 


1. To study theory of SDMA. 



SDMA TRAINER 


EXPERIMENTS 






Thaltej, 


INDIA. 

Phone(O): +91-79-26852427/ 26850829 

Phone(F): +91-79-26767512/ 26767648 

Fax : +91-79-26840290/ 26840290 

Mobile : +91-9824001168 




Dealer:-

TRELLIS CODED MODULATION TRAINER 

MODEL - TCM100 

This trainer has been designed with a view to provide practical/experimental knowledge Trellis Coded 

Modulation on a SINGLE PCB. 




Word clock. 

Bit Clock Frequency : 80KHz 



Data Format : NRZ, (0 degree) I and (90 degree) Q signals. 

3. Modulator Type : Balanced Modulator as TCM Modulator 

4. All parts are soldered on single PCB with complete circuit diagram Screen-printed in multicolour. 








Thaltej, 


INDIA. 

Phone(O): +91-79-26852427/ 26850829 

Phone(F): +91-79-26767512/ 26767648 

Fax : +91-79-26840290/ 26840290 

Mobile : +91-9824001168 




Dealer:-

TDMA TRAINER 

MODEL- TDMA100 

This trainer has been designed with a view to provide practical and experimental knowledge of TDMA . 




3. On Board Two Input signals generators. 

Sine/Triangular wave : Frequency 500Hz. - 1 Vpp 

Sine/Square wave : Frequency 1Khz - 1 Vpp. 

4. On Board Control Pulse signal generator. 

Frequency Range : 2 KHz to 128 KHz. 

5. Switching Sections : Time-Space-Time Switching (T-S-T) 

6. Space Switching Controls : 16 Bit addresses 

7. Low Pass Filters : 3.4 Khz cutoff frequency. 

8. All parts are soldered on single pin TAGS on single PCB of size 12" x 9" with complete circuit diagram 

Screen-printed in multicolour 








Thaltej, 


INDIA. 

Phone(O): +91-79-26852427/ 26850829 

Phone(F): +91-79-26767512/ 26767648 

Fax : +91-79-26840290/ 26840290 

Mobile : +91-9824001168 




Dealer:-

VERTICAL REDUNDANCY CHECK 

(VRC CODING & DECODING) 

MODEL - VRC100 


Vertical Redundancy Check coding decoding. 






5. Sections : VRC (Vertical Redundancy Check ) coding and decoding 


7. VRC Polynomials : 16 bits 



1. To study theory of VRC Coding / Decoding. 

2. To generate VRC signal. 

3. To decode VRC signal. 


EXPERIMENTS 






Thaltej, 


INDIA. 

Phone(O): +91-79-26852427/ 26850829 

Phone(F): +91-79-26767512/ 26767648 

Fax : +91-79-26840290/ 26840290 

Mobile : +91-9824001168 




Dealer:-

Advanced Digital & Data Communication Lab 05 - Sigma Trainers ...

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