Directorate Of Technical Education

Directorate Of Technical Education has published Tender for Purchase Of Digital And Analog Communication Lab Equipment(Tansche) , Digital And Analog Communication Lab Equipment(Tansche) , Digital Ic Trainer Kit: 1. Equipped With 16 High-Visibility Leds For Monitoring Experimental Outputs And Logic Status Indication. 2. Dedicated Driver Circuitry Provided For Reliable Operation And Protection Of All 16 Leds During Experimentation. 3. All 16 Driver Input Lines Are Terminated Through Banana Connectors For Flexible And Easy External Interfacing. 4. Includes 16 Spdt Toggle Switches For Generating Manual Logic Input Conditions In Digital Electronics Experiments. 5. Additional 16 Leds Provided To Display The Real-Time Status Of Individual Switch Operations. 6. One Terminal Of Each Spdt Switch Is Externally Accessible Through Banana Sockets For Convenient Circuit Connections. 7. Built-In Variable Clock Generator Enables Pulse Generation For Sequential And Timing-Based 8. Digital Experiments. 9. Frequency Adjustment Provided Through Potentiometer And Rotary Switch Combination For Precise Clock Selection. 10. Clock Output Is Terminated Through Banana Connectors For Quick Integration With External Circuits And Trainer Modules. 11. Features Dual 7-Segment Led Display With 7447 Decoder/Driver Ic For Bcd To Display 12. Conversion Experiments. 13. Inputs Of The 7447 Drivers Are Terminated At Banana Connectors For Direct Digital Logic Interfacing. 14. Includes Solderless Breadboard For Rapid Circuit Prototyping And Reusable Experimental Setup Development. , Amplitude Modulation Trainer Kit: 1) On Board Carrier And Modulating Signal Generator With Amplitude And Frequency Adjustable 2) Carrier And Modulating Signals Are Provided In The Unit With Frequency Variable. 3) In-Built Regulated Power Supply 4) On Board Envelope Detector 5) Schematic Diagram Provided In The Front Panel Modulating Signal Frequency : (300Hz-3 Khz) Amplitude : (0-5) V Carrier Signal Carrier Signal Frequency : 10 Khz - 50 Khz Amplitude : (0-15) V Type Of Modulator : 1. Ring Modulator 2. Transistor Based Modulator Method Of Modulation : 1. Under Modulation 2. Critical Modulation 3. Over Modulation , Fm Trainer Kit 1) On Board Sine Wave Generator 2) Provision To Study Modulation & Demodulation In The Same Unit 3) Test Points To Study Different Waveforms 4) In-Built Audio Power Amplifier 5) Mic Pre Amplifier 6) Built-In Power Supply 7) Sine Wave Generator : Frequency - 100Hz To 1.2 Khz With Amplitude Adjustable, (0-5V) 8) Fm Modulator : Direct Fm 9) Carrier Frequency : 20 Khz (Low), 367 Khz(High) 10) Fm Demodulator : Pll Detector, Quadrature Detector, Foster Seelay Discriminator / Phase Discriminator, Ratio Detector Are Provided. 11) Audio Power Amplifier : Gain 100 12) Mic Pre Amplifier : Gain 20 , Ask, Fsk, Psk Trainer Kit A S K Modulation & Demodulation Trainer  On Board Data Generator Circuit.  Auto / Manual Mode (Data Generation)  External Patching Provision Provided Between The Modulator And Demodulator.  Built-In Power Supply.  Modulator And Demodulator Are Separately Provided.  Easy Interconnections Are Made By Patch Cords.  Mode : Auto / Manual  Input Data Rate : 800Hz To 2 Khz  Any External Ttl Compatible Sequence With Frequency Up To 2.1 Khz.  Carrier Frequency : 20 Khz  Power Supply Ratings: 230V + 10%, 50Hz. F S K Modulation & Demodulation Trainer  Three Types Of I/P Sources - Manual Input , Square Input , Rs232 Input  Fsk Modulator With, Mark Frequency: 1070 Hz Space Frequency: 1270  Pll Based Fsk Demodulator  Output Provided Through Bs2 Connector And Serial Port.  Built-In Power Supply. P S K Modulation & Demodulation Trainer  On Board Programmable Data Generator  On Board Carrier Generator  Mimic Diagram In The Front Panel  Type Of Modulator : Balance Modulator  Type Of Demodulator : Balance Demodulator  Binary Inputs - 8-Bit Data Length  50 Khz, Clock  Carrier Inputs Frequency : 200 Khz Amplitude : 2 V Pp  Level Converter : Unipolar To Bipolar  Supply Ratings Ac Input (230V, ± 10%, 50Hz) Dc Output (+12V,-12V, +5V, Gnd , Pam, Pwm, Ppm Trainer Kit  Pam- Ppm- Pwm Modulation And Demodulation Techniques, Using Natural And Flat-Top Sampling.  Natural Sample, Sample And Hold And Flat-Top Outputs.  Selectable 2 Different Sampling Pulse Frequencies On Board.  On Board Sine Wave Generators.  Voice Communication Using Dynamic Microphone And Speaker  On Board Filters And Amplifier  Functional Blocks Indicated On Board Mimics  Input- Output And Test Points Provided On Board.  Built In Dc Power Supply  Fully Documented Operating Manual  Switch Faults  Pulse Modulation Techniques : (1) Pulse Amplitude Modulation (2) Pulse Width Modulation (3) Pulse Position Modulation  Crystal Frequency : 6.14Mhz  Sampling Frequency : 16 Khz, 32 Khz  Sine Wave Generator : 1 Khz & 500 Hz, Amplitude (0-5) V, Tolerance +5%  Low Pass Filter : 4Th Order Bw Filter, Cut Off Frequency 3.4 Khz  Voice Communication: Voice Link Using Dynamic Mic & Speaker  Ac Amplifier : With Adjustable Gain Control  Interconnections : Uninsulated Sockets.  Power : 230V, 50Hz  Accessories : Manual Set Of Patch Chords, Microphone & Speaker. Last date of submission for this tender is 2026-06-09. This is a Laboratory Equipment tender in Krishnagiri, Tamil Nadu