ExpEYES/C2/Panel-connections-and-software-interface/English-timed

Time	Narration
00:01	Hello everyone. Welcome to this tutorial on Panel connections and Software interface.
00:07	In this tutorial, we will learn about: Various terminals on the Panel Accessory set and Software interface.
00:17	We will also learn to demonstrate: Ohm's law Effective resistance in series combination Effective resistance in parallel combination and Show the circuit diagrams of our experiments.
00:33	Here I am using, ExpEYES version 3.1.0 Ubuntu Linux OS version 14.04
00:43	To follow this tutorial, you should be familiar with ExpEYES Junior interface. If not, for relevant tutorials, please visit our website.
00:55	Let's discuss about the utilities of ExpEYES Junior device.
01:00	The device can be used to carry out experiments in: Higher Secondary Undergraduates Electrical and Electronics Engineering courses.
01:12	It can be used in fields such as- Electricity, Sound, Magnetism, Light, Diode, Transistors and others.
01:23	Let's begin with terminals on the top of Panel. Panel has four ground (GND) terminals. At these terminals, the voltage is zero volt (0 V).
01:35	Voltage measured at other input terminals is with reference to ground(GND) terminals.
01:42	Input terminals A1 and A2 can measure voltage between -5V to +5V.
01:51	On the left, IN1 and IN2 terminals can measure voltage between 0 to 5V.
01:59	IN1 also measures capacitance up to 5000 pF(pico farads), with good accuracy.
02:07	PVS is Programmable voltage source. It is used to deliver voltages in 0-5 Volts range with a minimum step of 1.25 mV (milli volts) and can deliver up to 5 mA (milli amps).
02:25	SINE delivers a constant frequency around 150 Hz, at an amplitude around 4 volts.
02:33	SEN is mainly used for connective sensor elements like photo-transistors, Light Dependent Resistors, Thermistors etc.
02:45	It is a voltage measuring terminal with an internal 5.1K resistor connected to 5 volts.
02:52	SQR1 and SQR2 terminals can generate Square waves of “0” to “5V” with a frequency from 0.7 Hertz to 100 Kilo Hertz.
03:05	OD1 produces a digital output as 0V or 5V, under Software control.
03:13	MIC captures sound from an external sound source.
03:18	CCS means Constant Current Source.
03:22	It gives 1 mA(one milli Amp) current with a load resistor of 3 kΩ(kilo ohms), since voltage should be kept below 4 volts.
03:31	Inverting amplifier is used to amplify external voltages. It may be used to amplify external condenser or mic output.
03:42	Along with the device, some accessories are provided.
03:47	Accessories list includes: Two Piezo Electric Discs Two 3000 turns coils DC Motor
03:56	Screwdriver Set of four permanent magnets Four crocodile clips with wires Transistor
04:05	Two silicon diodes LDR & Thermistor Capacitors
04:12	Four 5mm LEDS Four wires Resistors.
04:19	This is a graphical user interface (GUI) of ExpEYES Junior. GUI is known as Plot window.
04:28	On the left side of the Plot window, we have input terminals: A1, A2, IN1, IN2, SEN, SQ1 and SQ2.
04:40	ATR, WHI and other trigger sources are used to fix the waveform.
04:48	We will discuss about ATR, WHI and other trigger sources in the upcoming tutorials.
04:56	CH1, CH2, CH3, CH4 are plotting channels with sliders.
05:04	Channel sliders on the right are used to move the waveform on the Plot Window.
05:11	Click on A1 and drag to CH1. We can see the connection information in the box below.
05:21	Click on A2 and drag to CH2. We can see the connection information as before.
05:29	Drag channel CH2 to FIT. It shows the voltage and frequency of A2.
05:38	Drag CH2 to NML. It removes the display shown by FIT.
05:44	msec/div(milli second/division) represents time axis.
05:51	Volt/div represents volt axis.
05:56	Trig level is a trigger controller.
06:00	Click on CH2 and drag to DEL. It removes CH2.
06:07	Click on CH1 and drag to DEL. It disables the display of CH1.
06:15	FTR generates Fourier spectrum of the wave.
06:20	Under Setting Squarewaves, we have a number of input and check boxes.
06:26	In this input box, we can change the frequency of the wave in Hertz.
06:33	This is to change phase difference- dphi, in percentage(%).
06:38	In Set PVS= input box, we can enter the desired voltage value between 0 to 5V. Press Enter to set the value.
06:52	SQR1, SQR2 and BOTH check boxes are used to activate the frequency. Frequency can be changed using the slider.
07:04	Set State check boxes are used to control OD1 and CCS.
07:11	Measure C on IN1 button is used to measure Capacitance.
07:16	Measure R on SEN button is used to measure Resistance.
07:21	Below the buttons, we have a command window to type Python code. We will discuss about Python code in upcoming tutorials.
07:31	Save Traces to button to save traces as ".txt" files.
07:37	We will discuss about LOOP check box, SCAN and XMG buttons in later tutorials.
07:45	EXPERIMENTS button displays list of experiments. Quit button is used to close the window.
07:53	Now, I will demonstrate Ohm's law using the device and its interface.
07:59	In this experiment, we will show the dependency of voltage across a resistor and verify Ohm’s law.
08:09	The device is connected to the system.
08:12	In this experiment, PVS is connected to IN1 through 2.2 KΩ (kilo ohms) resistance. IN1 is connected to ground (GND) through 1KΩ (kilo ohms).
08:25	This is the circuit diagram for the connection.
08:30	Open the software interface.
08:32	In the Plot window, click on IN1 to measure the voltage.
08:37	For PVS=1 Volt, the corresponding value of IN1 is 0.309 Volt. For PVS=2V, IN1 value is 0.619V. For PVS=3V, IN1 value is 0.928V.
09:01	As an assignment- Change PVS values from 0 to 5 volts and check the corresponding IN1 values.
09:10	Let us perform an experiment to check the effective resistance in series combination.
09:16	In this experiment, we will show the voltage when resistors are connected in series.
09:23	In this experiment- IN1 is connected to CCS, CCS is connected to ground through a resistor.
09:33	On the Plot window, select the CCS check box. Click on IN1 to show the voltage.
09:42	This is the circuit diagram for the connection.
09:45	When 1 KΩ (kilo ohms) resistor is connected to CCS and GND, measured voltage is 0.979V.
09:54	Likewise, for 560 Ω(ohms) resistance, measured voltage is 0.543V.
10:02	For a series combination of 1 KΩ (kilo ohms) and 560Ω(ohms) resistances, measured voltage is 1.524V'.
10:14	Let us perform an experiment to check the effective resistance in parallel combination.
10:21	In this experiment, we will show the voltage when resistors are connected in parallel.
10:28	In this experiment, IN1 is connected to CCS. CCS is connected to ground(GND) through a resistor.
10:38	This is the circuit diagram for the connection.
10:40	On the Plot window, select the CCS check box. Click on IN1 to show the voltage.
10:49	The experiment is first carried out with 1000Ω(ohms) resistor then with parallel combination of two 1000 Ω(ohms) resistors.
11:01	This is the circuit diagram for 1000 Ω(ohm) resistance in parallel combination. The measured value of IN1 is 0.952V.
11:11	This is the circuit diagram for parallel combination of two 1000 Ω(ohm) resistors. The measured value of IN1 is 0.474V.
11:25	Again the experiment is carried out- first with 2.2K Ω(kilo ohms) resistor, then with parallel combination of two 2.2 KΩ(kilo ohms) resistors.
11:38	This is the circuit diagram for 2.2K Ω(kilo ohms), resistance. The measured value of IN1 is 2.132V
11:48	This is the circuit diagram for parallel combination of two 2.2KΩ(kilo ohms) resistance. The measured value of IN1 is 1.063V.
12:03	Let's summarize.
12:05	In this tutorial, we have learnt: Various terminals on the panel Accessory set and Software interface.
12:14	We have also learnt to demonstrate: Ohm's law Effective resistance in series Effective resistance in parallel and Show the circuit diagrams of above experiments.
12:29	As an assignment, Measure the effective resistance using a combination of series and parallel resistors.
12:37	This video summarizes the Spoken Tutorial project. If you do not have good bandwidth, you can download and watch it.
12:47	We conduct workshops using Spoken Tutorials and give certificates. Please contact us.
12:55	The Spoken Tutorial Project is funded by NMEICT, MHRD, Government of India.
13:02	This tutorial is contributed by Kaushik Datta and Madhuri Ganapathi. This is Sakina Sidhwa. Thank you for joining.

Contributors and Content Editors

Pratik kamble, Sandhya.np14