Brand: To be mentioned by the bidder
Country of Origin: To be mentioned by the bidder
Country of Manufacturing: To be mentioned by the bidder

The digital communication trainer should consist of the following modules: Module-1: Line Code Encoder and Decoder
Unipolar and Bipolar NRZ Signal Encoder & Decoder 
Type of Signal: TTL, Data Rate: 1 kbps ~ 4 kbps
Unipolar and Bipolar RZ Signal Encoder & Decoder 
Type of Signal: TTL, Data Rate: 1 kbps ~ 2.5 kbps, CLK: 2 kHz ~ 5 kHz
AMI Signal Encoder & Decoder 
Type of Signal: TTL, Data Rate: 50 bps ~ 250 bps, CLK: 100 Hz ~ 500 Hz
Manchester Signal Encoder & Decoder 
Type of Signal: TTL, Data Rate: 100 bps ~ 400 bps, CLK: 200 Hz ~ 800 Hz
Module-2: PWM Modulator and Demodulator uA741 Pulse Width Modulator 
Carrier Signal: 1.5 kHz ~ 2 kHz, Audio Signal: 500 Hz 
LM555 Pulse Width Modulator 
Carrier Signal: 5 kHz ~ 10 kHz, Audio Signal: 1 kHz 
Pulse Width Demodulator
Carrier Signal: 5 kHz ~ 6 kHz, Audio Signal: 500 Hz ~ 700 HzModule-3: PCM Modulator and Demodulator
PCM Modulator & Demodulator 
Built-in Sample Frequency: 8 kHz 
Built-in Operation Frequency: 2048 kHzModule-4: Delta Modulator and Demodulator Delta Modulator & Demodulator Type of Sample Signal: TTL CLK Sample Frequency: 32 kHz ~ 256 kHz & Audio Signal: 1 kHz ~ 3 kHz. Module-5: Adaptive Delta Modulator and Demodulator Adaptive Delta Modulator & Demodulator Type of Sample Signal: TTL CLK Sample Frequency: 32 kHz ~ 128 kHz & 64 kHz ~ 256 kHz Audio Signal: 500 Hz ~ 1 kHzModule-6: ASK Modulator and Demodulator XR 2206 ASK Modulator Carrier Signal: 20 kHz, Data Rate: 1 kbps ? MC 1496 ASK Modulator ? Carrier Signal: 20 kHz ~ 100 kHz, Data Rate: 2 kbps? Asynchronous ASK Demodulator? Carrier Signal: 20 kHz, Data Rate: 200 bps ~ 1 kbps.? Synchronous ASK Demodulator? Carrier Signal: 100 kHz, Data Rate: 200 bps ~ 2 kbps Module-7: FSK Modulator and Demodulator? XR2206 & LM566 FSK Modulator & Demodulator ? Data Rate: 200 bps ~ 400 bpsModule-8: PSK Modulator and Demodulator ? PSK Modulator & Demodulator ? Carrier Signal: 100 kHz, Data Rate: 200 bpsModule-9: Function Generator and DC Power Supply ? Waveforms: Sine, Triangle, Square, TTL Pulse? Amplitude: >10Vpp? Impedance: 50Ω, ± 10%? Duty Control: 30% ~ 60%? Display: 6-Digit LED ? Frequency Range: 10Hz ~ 100 kHz (4 Ranges)? Frequency Range: 100Hz ~ 1 MHz (4 Ranges)? Constant Voltage Output: ± 5V, ± 12V? Variable Voltage Output: 0V ~ ± 15V? Power source: 220~230V AC, 50Hz, 1 Phase

Required accessories: Connecting cables, Short jumpers, AdapterandInstruction manual ? Warranty: 1 (One) year with services? Required documents: Manufacturer's Authorization Letter with contact details and Catalog should be submitted? Installation, Testing, Commissioning and Training must be performed by qualified and experienced engineers