Digital Communications

OBSERVATION The modicom 1 board, first in my observation is the power input these are the electrical input connections necessary to power the module. The LJ Technical Systems’ “I. C. Power 60” or “System Power 90” is the recommended power supplies. Then second is the sampling control logic is the circuitry generates the timing and control signals that sample the input waveform, and also creates a sinusoidal 1 kHz signal for use during the MODICOM 1 practical exercises.

It is recommended that this signal is used for most of the experiments, as you will find that it is difficult to synchronize more than one oscilloscope trace when the input comes from an external source. Then third is the sampling circuit is the signal at the ANALOG INPUT socket is sampled at a rate, and for duration, which depends on the applied sampling control signal. Then fourth is the second order low pass filter this is a filter having a 3. 4 kHz bandwidth.

Then lastly is the fourth order low pass filter is similar to the Second Order Low Pass Filter but has a steeper cut off gradient (represented by the graph on the board). CONCLUSION MODICOM 1 incorporates and on-board waveform generator that can be selected to provide a 1 kHz sine wave. An on-board pulse generator, giving a choice of 5 discrete sampling frequencies and 9 discrete duty cycles, is also provided. These on-board signal sources are phase locked, ensuring that the sampled waveforms appear stationary when observed on an oscilloscope. OBSERVATION

In the experiment, we study the Modicom 1 Demonstration. The purpose of this is to understand the functions of each block using input analog signal. We connect the supplies to the board; we ensure sampling control board “internal” position. The duty cycle selector position is in 5. We link 1 kHz sine wave output to analog input. Then we turn on the power supply. Ensuring that all the connection are connected properly. We need to display the input sine wave and sample output and we link the sample output to the input of fourth order low pass filter.

We display the output of the fourth order low pass filter. Successively press the frequency selector and observe the effect on the signal. CONCLUSION The sample and hold circuit stores electric charge in a capacitor and contains at least one fast FET switch and at least one operational amplifier. To sample the input signal the switch connects the capacitor to the output of a buffer amplifier. The buffer amplifier charges or discharges the capacitor so that the voltage across the capacitor is practically equal, or proportional to, input voltage.

In hold mode the switch disconnects the capacitor from the buffer. The capacitor is invariably discharged by its own leakage currents and useful load currents, which makes the circuit inherently volatile, but the loss of voltage (voltage drop) within a specified hold time remains within an acceptable error margin. Therefore The sample and hold circuits are essentially used in linear systems. In some kinds of analog-to-digital converters, the input is often compared to a voltage generated internally from a digital-to-analog converter (D-A-C).

The circuit tries a series of values and stops converting once the voltages are “the same” within some defined error margin. If the input value was permitted to change during this comparison process, the resulting conversion would be inaccurate and possibly completely unrelated to the true input value. Such successive approximation converters will often incorporate internal sample and hold circuitry. In addition, sample and hold circuits are often used when multiple samples need to be measured at the same time. Each value is sampled and held, using a common sample clock.

Calculate the price
Make an order in advance and get the best price
Pages (550 words)
$0.00
*Price with a welcome 15% discount applied.
Pro tip: If you want to save more money and pay the lowest price, you need to set a more extended deadline.
We know how difficult it is to be a student these days. That's why our prices are one of the most affordable on the market, and there are no hidden fees.

Instead, we offer bonuses, discounts, and free services to make your experience outstanding.
How it works
Receive a 100% original paper that will pass Turnitin from a top essay writing service
step 1
Upload your instructions
Fill out the order form and provide paper details. You can even attach screenshots or add additional instructions later. If something is not clear or missing, the writer will contact you for clarification.
Pro service tips
How to get the most out of your experience with MyStudyWriters
One writer throughout the entire course
If you like the writer, you can hire them again. Just copy & paste their ID on the order form ("Preferred Writer's ID" field). This way, your vocabulary will be uniform, and the writer will be aware of your needs.
The same paper from different writers
You can order essay or any other work from two different writers to choose the best one or give another version to a friend. This can be done through the add-on "Same paper from another writer."
Copy of sources used by the writer
Our college essay writers work with ScienceDirect and other databases. They can send you articles or materials used in PDF or through screenshots. Just tick the "Copy of sources" field on the order form.
Testimonials
See why 20k+ students have chosen us as their sole writing assistance provider
Check out the latest reviews and opinions submitted by real customers worldwide and make an informed decision.
Nursing
Impressive writing
Customer 452547, February 6th, 2021
10th grade English
very good
Customer 452773, March 26th, 2023
Business and administrative studies
great job as always
Customer 452773, February 26th, 2023
Business and administrative studies
Thank you for your hard work and effort. Made a 96 out of 125 points Lacked information from the rubic
Customer 452773, October 27th, 2023
Managerial Accounting & Legal Aspects of Business ACC/543
excellent work
Customer 452773, February 7th, 2024
Business and administrative studies
Thank you for your hard work and help
Customer 452773, February 21st, 2023
Business and administrative studies
Excellent job
Customer 452773, March 17th, 2023
Leadership Studies
awesome work as always
Customer 452773, August 19th, 2023
See instructions
Paid for 3 days got it back in 5. That's my only complaint on this paper. Other then that paper was good just and the site been amazing on getting stuff out on time besides my last few orders
Customer 452771, October 23rd, 2024
Data 564
excellent work
Customer 452773, April 11th, 2024
Business and administrative studies
excellent, got a 100
Customer 452773, May 17th, 2023
Business and administrative studies
excellent job
Customer 452773, March 12th, 2023
11,595
Customer reviews in total
96%
Current satisfaction rate
3 pages
Average paper length
37%
Customers referred by a friend
OUR GIFT TO YOU
15% OFF your first order
Use a coupon FIRST15 and enjoy expert help with any task at the most affordable price.
Claim my 15% OFF Order in Chat
Close

Sometimes it is hard to do all the work on your own

Let us help you get a good grade on your paper. Get professional help and free up your time for more important courses. Let us handle your;

  • Dissertations and Thesis
  • Essays
  • All Assignments

  • Research papers
  • Terms Papers
  • Online Classes
Live ChatWhatsApp