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Alan RuxElectrical and Computer Engineering Department

University of MassachusettsLowell Campus

Lecture 1 of 4

Analog Discovery Design Kit

Mini Course Webinar

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Revolutionizing How Engineering

Students Learn Analog Circuit

Design

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Go To LectureDo Experiments as in the Syllabus

“ wire-by-numbers”• three to six student in a Team• one student, builds circuit, takes measurements,

fills out lab notebooks• others texts friends & look out into space• one student learns hands-on

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Discovery Kit

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Basic Electronic Lab.

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the Analog Discovery Design Kit

allow students to build and test a wide range of analog and digital circuits using their own PC without the need for any other special test equipment.

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Active learning –

learning by doing helps engineering students understand the process of breaking down larger problems into smaller, more easily solved parts without losing the overall understanding of the complete system.

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University of Massachusetts – Lowell Campus

in partnership with

- University Program

& DIGILENT Education Tools

Indo-US Collaboration for Engineering Education

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Analog Discovery Design Kit

learning by doing

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Analog Discovery Design Kit

• Dual Channel Oscilloscope– Two channels differential input, 1 Meg ohm, 24pfd– +/- 20 volts input max– 250 mv. to 5 Volts / division with variable gain settings– 100 MSPS, 5 MHz bandwidth, 16K points/channel memory– FFT function

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Analog Discovery Design Kit

• 2 Channel, Arbitrary Waveforms Generator– Sine wave– Square wave– Triangular wave– Sawtooth wave– Sweep function– AM-FM modulation– 4 MHz bandwidth, – 10 P-P voltage output– User defined waveforms– Bode function

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Analog Discovery Design Kit

• Power Supply– Two fixed voltages +5 volts / -5 volts, 50 ma. Each– Switchable ON / OFF comands– Unit powered by USB computer port, (cable included)

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Analog Discovery Design Kit

• Logic Analyzer – Pattern Generator – I/O s– 16 signal channels shared between logic analyzer– pattern generator– discrete I/O devices– 100 MSPS, 4 k buffer per pin– Cross triggering with scope channels

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2 differential input Voltmeters

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Network Analyzer 10Hz to 5 MHz

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Analog Discovery Design Kit

• Static I / O– PC based virtual I/O device drivers including:o push buttonso LEDso switcheso seven segment displayso sliderso Progress bars

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Analog Discovery Design Kit

• WaveForms Software– Windows XP or newer– full –featured GUI for all instruments

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Basic Electronic Lab.

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the Analog Discovery Design Kit

allow students to build and test a wide range of analog and digital circuits using their own PC without the need for any other special test equipment.

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This approach eliminates the time and space limitations of traditional university lab settings and allows students more flexibility to experiment with real circuits through direct hands-on experience

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Active learning –

learning by doing helps engineering students understand the process of breaking down larger problems into smaller, more easily solved parts without losing the overall understanding of the complete system.

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Indo-US Collaboration for Engineering Education

University of Massachusetts – Lowell Campus

in partnership with

- University Program

& DIGILENT Education Tools

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Analog Discovery Design Kit

learning by doing

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Analog Parts Kit

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Electrostatic Discharge Hazard

Electrostatic discharge (ESD) is the sudden flow of electricity between two objects caused by contact, an electrical short, or dielectric breakdown. ESD can be caused by a buildup of static electricity by tribocharging, or by electrostatic induction.

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WaveForms Software– Windows XP or newer– full –featured GUI for all instruments

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Let’s Get Started !Google “Analog Discovery Kit Digilent”

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Scroll down page to waveforms

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Mouse click on “Learn more”

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Click on

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Need about 38MBite HD spaceMS Security Essentials will not be happy

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Follow set-up wizard’s instructions

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If you see this, the Discovery kit is not plugged in to USB port

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Unit was detected “connect to device”

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You are now connected

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Download “a getting started guide for first

time WaveForms users”

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Experence the WaveForms software

This can be done with or without the Discovery kit , use demo-mode

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D.C. Circuits Lab. Experiments

• Learning the ADK Leads (Analog Discovery Kit)

• Solder-less breadboard use• Power Supply Operation• Voltmeter Operation• Series Circuits Measurements• Superposition Theorem• Homework problem

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Time to take the ADK out of the boxand connect to a USB port.Connect the Leads to ADK.

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The Leads are Keyedbottom view

color wires with white stripe on bottom, also bottom has small feet pads

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Note keyway notch

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Keyway pin

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ADK top view with leads plugged in

( note solid color wires are on top)

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Leads are color coded

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Leads we will be using today

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To make things easer I use a rubber band to keep the leads I am not using out of the way

Not used Leads in use

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Plug one end into the connector on the end of the leads from the ADK

(may be using solid copper 24 awg. insulated wires for leads with ends striped )

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Now your lead from the ADK is longer and you can plug the PIN end into your

solderless breadboard

Time for Questions ?

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Analog Discovery Design Kit

• Power Supply– Two fixed voltages +5 volts / -5 volts, 50 ma. MAX– Switchable ON / OFF commands– Unit powered by USB computer port, (cable included)

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With the ADK plugged into your computer USB port, click on the “W” short-cut logo.The status bar of the Waveforms Window should appear and a red LED on the ADK

near the place the USB cable plugs into should be on

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You are now connected

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If you see this window recheck your USB cable connections and try again

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To enable the power supplies click on the “Voltage” icon

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Power Supply Control Panel

Main power control

+5 volts control

-5 volt control

Power use indicator

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Power Supply Control Panel

Main power control - on

+5 volts - on

-5 volt - on

Power use indicator

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Power Supply Control PanelPower use indicator max current

70 MA 20 MA

10 MA

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Power Supply Control Panelpower over the 50 MA limit

Error message

At this time do not allow 1 amp to be drawn

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Power active

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To enable the Voltmeter click on the “more instruments” icon

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Then Voltmeter

This will unable 2 channel oscilloscope

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2 differential input Voltmeters

Note two options for Range , use auto range

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Voltmeter connections

Voltmeter #1 + input

Voltmeter #1 - input

Voltmeter #2 + input

Voltmeter #2 - input

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Two Resistors in Series Measurements

V+ Power Supply +5V (red)

V- Power Supply -5V (white)

Using the +5v and -5v supplies = 10 volts across node “A” and “B”, R1 & R2 are 1.0K ohms each.

Voltmeter 1, positive lead (orange)

Voltmeter 2, positive lead (blue)

Voltmeter 1 & 2, negative leads (orange/white & blue/white)

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Two Resistors in Series Measurements

R2 R1

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Two Resistors in Series Measurements

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Three Resistors in Series Measurements

Using the +5v and -5v supplies = 10 volts across node “A” and “B”, R1, R2 & R3 are 1.0K ohms each.

V+ Power Supply +5V (red)

V- Power Supply -5V (white)

Voltmeter 1, positive lead (orange)

Voltmeter 1, negative lead (orange/white)

Voltmeter 2, positive lead (blue)

Voltmeter 2, negative lead (blue/white)

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Three Resistors in Series Measurements

R1R2R3

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Three Resistors in Series Measurements

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Three Resistors in Series Measurements

Using the +5v and -5v supplies = 10 volts across node “A” and “B”,R1& R3 are 1.0K ohms, R2 is 100 ohms .

V+ Power Supply +5V (red)

V- Power Supply -5V (white)

Voltmeter 1, positive lead (orange)

Voltmeter 1, negative lead (orange/white)

Voltmeter 2, positive lead (blue)

Voltmeter 2, negative lead (blue/white)

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Three Resistors in Series Measurements

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Superposition Theorem

• Some circuits require more than one voltage or current source

• The superposition theorem is a way to determine currents and voltages in a circuit that has multiple sources by considering one source at a time

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Illustration of the superposition theorem.Thomas L. FloydElectronics Fundamentals, 6e

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Superposition Theorem Problemcurrent IR3

R1, R2, R3, all are 1000 ohms, Vs1=10 volts, Vs2=5 volts

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Superposition Theorempower supply connections

R1, R2, R3, all are 1000 ohms, Vs1=10 volts, Vs2=5 volts

V+ Power Supply +5V (red)

V- Power Supply -5V (white)

+ 10 v. + 5 v.

Power Supply +/-common (black)

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Superposition Theoremvoltmeter connectionsvoltmeter 1 across R3

Voltmeter 1 +Orange lead

Voltmeter 1 -Orange/white lead

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Superposition Theoremvoltmeter connectionsvoltmeter 2 across R2

Voltmeter 2 +Blue lead

Voltmeter 2 -Blue/white lead

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Superposition Theorem connectionsR1

R3

R2

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Superposition Theorem MeasurementsChannel 1 = R3Channel 2 = R2Vs1 = 10 v.Vs2 = 5 v.All Rs = 1000 ohms

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Homework

1. Series Circuits measurements with 2 to 4 resistors

2. Simple Series/Parallel measurements, 5 resistors or more – experiment around

3. Superposition measurements

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QuestionsAlan Rux at BVRIT