Report

on

ELEC 311 Laboratory Experiment #1

Familiarization With Laboratory Equipment

Submitted to

Lab demonstrator's name

Date: ______, 201__

By

Name student ID

Lab section: ______

Part 1: Pre-lab (this part must be done prior to the lab session)

Table 1 Power supply parameters

Number of channels / Output voltages, V / Max output currents for each channel, A / Constant voltage load regulation (IL=2.15A),
% and mV / CH3 min and max output voltages, V / Accuracy of display V (out ON), % / Operating temperature range, oC

Table 2: DMM parameters

// your table goes here

  • Can this equipment measure frequency?
  • How do we factor in the effect of temperature on the measurements accuracy?

Table 3: Function generator parameters

// your table goes here

  • Can you generate Sin(x)/x waveform using this function generator?



Table 4 Oscilloscope parameters

// your table goes here

Figure 5: DMM measurement Figure 6Oscilloscope measurement

Explain:

-Why there is a difference between DMM and oscilloscope connections.

-How you are going to measure the VR2 using the oscilloscope.

Table 5: Basic oscilloscope settings

Parameters of signal
Dial value / 1Hz, 3V amplitude / 10Hz, 0.5V amplitude / 1kHz, 5V amplitude; 1V positive offset
Calc.value / “Autoset” / Calc.value / “Autoset” / Calc.value / “Autoset”
“Horizontal Scale”
“Vertical Scale”

The steps I need to take to set the oscilloscope to measure:

-Peak-to-peak voltage on Channel 1

-RMS voltage on Channel 2

-Mean of the signal on Channel 1(Coupling must be set to DC)

-Frequency of the signal on Channel 1

======end of the pre-lab ======

Lab experiments

Table 6: Current measurements

Test condi-tions
Parameter / DC1=0V
DC2=1V / DC1=0V
DC2=5V / DC1=0V
DC2=12V / DC1=1V
DC2=12V / DC1=5V
DC2=12V / DC1=12V
DC2=12V / DC1=12V
DC2=0V
Direct / Indirect / Direct / Indirect / Direct / Indirect / Direct / Indirect / Direct / Indirect / Direct / Indirect / Direct / Indirect
IR1
IR2

Why arethe directly measured values of current different from the indirect ones?

Why is R1’s power rating different from R2’s?

Table 7: Current limiting function testing

“A” meter
Parameter / 0.00 / 0.01 / 0.05 / 0.10 / 0.20 / 0.50 / 1.00
IR2, A

Explain the results:

Table 8: Error vs. measurement range

Range
Parameter / 10mA / 100mA / 1A / 10A
Value / Value / Error, % / Value / Error, % / Value / Error, %
IR1, A

Explain the results:

Table 9: Oscilloscope and DMM measurements – sinusoidal signal

Test conditions: F=1 kHz, Vampl.=4V,Voffset=1.25V, sinusoidal wave, tamb=23oC, RH<60%.

Parameter
Tool, settings / Vpk-pk / VRMS / Vmean / Frequency
/ Coupling / Probe / Input (termination)imp., Ohm / Value, V / Error, % / Value, V / Error, % / Value, V / Error, % / Value, Hz / Error, %
AC / 1X / 1M
DC
AC / 75
DC
AC / 10X / 1M
DC
/ AC / Default
DC

Comment on the results:

What limitations of what equipment you were able to recognize?

Table 10 Oscilloscope and DMM measurements – non-sinusoidal signal

//your table goes here

Answers to the questions and discussion