ECT 122 Week 1 iLab #3 Parts: Breadboard Handheld DMM DC power supply Test leads
ID: 1716476 • Letter: E
Question
ECT 122 Week 1 iLab #3
Parts:
Breadboard
Handheld DMM
DC power supply
Test leads
Resistor kit
List the functions available on the DM717 handheld digital multimeter (DMM).
What is the function of the COM connection? What color lead is placed in this connection?
What is the function of the “VWmA” connection? What color lead is placed in this connection?
Pick five resistors at random.
Complete one row of the table below for each resistor.
Record the color of each band.
Using the color bands, calculate the resistance and tolerance and record your calculated value.
Calculate and record the tolerance range for each resistor.
Measure and record the value of each resistor using a handheld DMM.
Indicate Y = yes or N = no if the measurement is within tolerance.
Band Color
Calculated
Measured
Y/N
1
2
3
4
Value
Tolerance
Range
Examine the ELVIS prototyping environment and answer the questions listed below. If you don’t have access to an ELVIS machine, research it at http://www.ni.com/nielvis/.
What fixed DC voltage outputs are available?
What instruments are available with a prototyping environment such as ELVIS?
How do you access them?
Examine the DC power supply.
What variable voltages are available?
What is the maximum voltage output of each variable output?
Explain how you might connect a breadboard to the +5V output of a DC power supply.
Choose one of the resistors used in Step 4 and measure its resistance using the DMM. What was the rated value of the resistor? _________
What was the measured value? ________
Band Color
Calculated
Measured
Y/N
1
2
3
4
Value
Tolerance
Range
Explanation / Answer
Ques: List the functions available on the DM717 handheld digital multi meter (DMM).
Ans: Basic functions available on the DM717 handheld digital multi meter are:
Measure voltage in noisy environments True-rms
Electrical panels, AC outlets AC Voltage (V)
DC systems, auto/marine batteries DC Voltage (V)
AC current-electrical panels, appliances AC Current (A)
DC current-electronics, DC motors DC Current (A)
Specified resistance and continuity Resistance (Mohms)
Flame sensors Micro Amps
Diodes in ac to dc converters Diode test
Fuses, light bulbs, wire connections Continuity
Motor startup or run capacitors Capacitance
Frequency verification Frequency
VoltectTM Non contact voltage detection Non-contact voltage
Temp of air vents, fuses transformers Temperature inputs
Ques: What is the function of the COM connection? What color lead is placed in this connection?
Ans: It is the common ground input jack for all the functions. The black jack is placed in the COM connection.
Ques: What is the function of the “VWmA” connection? What color lead is placed in this connection?
Ans: Input terminal for voltage, continuity, resistance, diode test, capacitance and frequency measurement and
it is Red terminal.
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