COMMUNICATION TRAINER KITS:

 

SIGNAL SAMPLING & RECONSTRUCTION SYSTEM KIT

·         Sampling signal source : Internal :-Unipolar 5vDC variable, Bipolar 1khz sinewave or external.

·         Frequency   of   internal   sampling   signal   :   Selectable Sampling frequency as 32 KHz, 16 KHz, 8 KHz, 4 KHz, 2 Khz, Selectable Aliasing Frequency using frequency selectable NOB as 1.5Hz,1KHz,500Hz.

·         Duty cycle of internal sampling signal : Variable 0-90% in 10% steps with 4-pin Dip switch selectable.

·         Low pass filters : 4th order, active 'Butterworth' with 3.4 cut-off frequencies.

·         On-board:1 KHz synchronized sine wave of amplitude 5Vpp.

 

FOUR CHANNEL ANALOG TIME DIVISION MULTIPLEXING KIT

·         Input channels : 4-time division multiplexed, Analog input Channels.

·         On-board function generator : Four synchronized, Adjustable-amplitude sine waves at 250HZ,500HZ,1KHz and 2KHz. Four adjustable-amplitude DC levels.

·         Transmitter : Developed around IC 4066

·         Receiver : Developed around Filters

·         Receiver clock : Generated by phase-locked loop.

·         Operation modes : SLOW sampling period 14.65 seconds / channel. FAST sampling frequency 16KHz/channel.

·         Receiver low pass filters : Four 4th order 'Butterworth' with cut- off frequency.

·         Power Requirements : +5V at 400mA, 12V at 100mA.

·         Variable Message and carrier signal.

 

AMPLITUDE MODULATION & DEMODULATION KIT

·         On-board function generator.

·         Provision for calculating modulation index.

·         Receiver with envelope detector.

·         Verification of over and under modulation.

·         Variable Message and Carrier signal.

·         Power requirement +5v,-5v,+12v,-12v,@ 150mA.

 

FREQUENCY MODULATION & DEMODULATION

·         On-board function generator :

·         Frequency modulation using IC Xr2206

·         Receiver with Integrator & comparator.

·         Variable Message and Carrier signal.

·         Power requirement +5v,-5v,+12v,-12v,@ 150mA.

 

DELTA MODULATION, ADM & DEMODULATION SYSTEM KIT

·         Data Rate : 64/32/16/8 kbps.

·         Word Length : 8-Bits.

·         Input Signal : Sine /Square/Triangular.

·         Amplitude of Input : 2V P-P.

·         Input Frequency : 1Khz.

·         DC Input : +/- 1V

·         Sampling Rate : 64/32/16/8 KHZ. DAC : 8-bit / 40 mv.

·         Range : +/- 5 Volt. Conversion : 100-116 Micro-second.

 

TWO CHANNEL PCM & DEMODSYSTEM WITH TDM KIT

·         Four synchronized, adjustable-amplitude sinewaves at 250HZ,500HZ OR 1KHz and 2KHz. Four Adjustable-amplitude DC levels.

·         Transmitter : Developed around IC 44233.

·         Receiver : Developed around IC 44233

·         Receiver clock : Synchronised

·         Operation modes : Variable

·         Power Requirements : +5V at 400mA, 12V at 100mA.

·         Variable Message and carrier signal

 

ASK MODULATION & DEMODULATION SYSTEM KIT

·         ASK modulation using IC-4051

·         ASK De-modulation using filter ,comparator.

·         Data Pattern : 8-bir variable using 8-pin Dip switch.

·         Variable Message and Carrier signal

·         Data rate can be varied.

·         Power requirement : +5v,-5v,+12v,-12v,@ 150mA.

 

BPSK MODULATION & DEMODULATION SYSTEM KIT

·         BPSK modulation using IC-4051

·         BPSK De-modulation using filter and comparator.

·         Data Pattern : 8-bit variable using 8-pin Dip switch.

·         Variable Message and Carrier signal

·         Data rate can be varied.

 

ADAPTIVE DELTA MOD & DEMOD SYSTEM KIT

·         Data Rate : 64/32/16/8 kbps.

·         Word Length : 8-Bits.

·         Input Signal : Sine /Square/Triangular.

·         Amplitude of Input : 2V P-P.

·         Input Frequency : 1Khz.

·         DC Input : +/- 1V

·         Sampling Rate : 64/32/16/8 KHZ.

·         DAC : 8-bit / 40 mv.

·         Range : +/- 5 Volt.

·         Conversion : 100-116 Micro-second.

 

FSK MODULATION & DEMODULATION SYSTEM KIT

·         FSK modulation using IC-4051.

·         FSK De-modulation using comparator, filter.

·         Frequencies : Mark Frequency : 1.6KHZ.(variable)

·         Space Frequency : 1.4 KHZ.(variable)

·         Data Pattern : 8-bir variable using 8-pin Dip switch.

·         Variable Message & Carrier signal Data rate can be varied.

·         Power requirement +5v,-5v,+12v,-12v,@ 150mA.

 

FOUR CHANNEL PAM & DEMOD USING FIBRE OPTIC / TDM KIT

·         Input channels : 4-time division multiplexed, pulse amplitude modulated input channels.

·         Transmitter channel multiplexer : Based on 4-pole integrated circuit analog switch with Fiber optic Transmitter.

·         Input channel sampling rate : 16KHz per channel.

·         Sampling duty cycle : Variable at transmitter 0%-90% in 10% steps of each channel time slot - switch selectable

·         On-board function generator : Synchronized adjustable amplitude sine waves at 250Hz, 500Hz, 1KHz, 2KHz for use as analog input signals. Variable DC level for generation of synchronization pulses.

·         Comparator threshold level : Adjustable for sync pulse detection at the receiver.

·         Phased-locked loop : Generates clock and channel information at the receiver.

·         Receiver channel demultiplexer : Based on 4-pole integrated circuit analog switch with Fiber optic Receiver.

·         Receiver low pass filters : Four, 4th order 'Butterworth'.

·         Low pass filter cut-off frequency : 3.4 Khz.

·         Interconnections : 4mm sockets.

·         Test points : 49, numbered.

·         Power Requirements : +5V at 100mA, 12V at 100mA.

 

LINE CODING & DECODING SYSTEMS KIT

·         Coding Technique : NRZ technique.

·         Data Pattern : 8-bit variable data pattern using 8-pin Dip

·         Switch with data latching facility using latch 74373.

·         Internal Clock : on board provided .

·         List of Codes : RZ,NRZ-L,NRZ-S, NRZ-M,BI(L),

·         BI(M), MANCHESTER, ASK FSK.

·         Data Rate : 64/32 KBPS.

·         Dimensions : 300mm x 230mm.

·         Power Requirements : +5V at 100mA,12V at100mA.

 

ADAPTIVE DELTA MOD & DEMOD SYSTEM KIT

·         Data Rate : 64/32/16/8 kbps.

·         Word Length : 8-Bits.

·         Input Signal : Sine /Square/Triangular.

·         Amplitude of Input : 2V P-P.

·         Input FreQuency : 1Khz.

·         DC Input : +/- 1V

·         Sampling Rate : 64/32/16/8 KHZ.

·         DAC : 8-bit / 40 mv.

·         Range : +/- 5 Volt.

·         Conversion : 100-116 Micro-second.

 

DPSK MODULATION & DEMODULATION SYSTEM KIT

·         DPSK modulation using IC-4051

·         DPSK De-modulation using filter and comparator.

·         Data Pattern : 8-bit variable using 8-pin Dip switch.

·         Variable Message and Carrier signal

·         Data rate can be varied.

·         Power requirement +5v,-5v,+12v,-12v,@ 150mA.

 

TWO CHANNEL PCM & DEMOD USING FIBER OPTIC KIT

·         Input channels : 4-time division multiplexed, pulse-code modulated input channels.

·         On-board function generator : Four synchronized, adjustable - amplitude sinewaves at 250HZ,500HZ OR 1KHz & 2KHz. Four adjustable-amplitude DC levels.

·         Transmitter : Developed around ADC-690 with Fibre optic transmitter Sfh-750..

·         Receiver : Developed around DAC-0800 with Fibre optic detector Sfh-551.

·         Receiver clock : Generated by phase-locked loop.

·         Operation modes :SLOW sampling period 14.65 sec /chl.

·         FAST sampling frequency 16KHz/channel.

·         Receiver low pass filters : Four 4th order 'Butterworth' with Cut-off frequency.

·         Power Requirements : +5V at 400mA, 12V at 100mA.

 

QPSK MODULATION & DEMODULATION SYSTEM KIT

·         QPsk modulation using Ic-1496.

·         QPsk De-modulation using Ic-1496.

·         Data Pattern :-8-bir variable using 8-pin Dip switch.

 

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