Mindanao State University – Iligan Institute of TechnologyCollege of Engineering

EECE Department

ACTIVITY 1An introduction to the NI ELVIS II Test Equipment

Ditucalan, Darryl Dave G.

Gamil, Ralph

Introduction:

NI Elvis II is the equipment we use in this laboratory. It has digital multimeter, oscilloscope, DC power supply, and function generator integrated in one unit but instead of having its digital display, it sends the information from the equipment to a personal computer via USB where the measurements are displayed on the screen.

Experiment:

This experiment introduces us to the features of NI Elvis II digital multimeter, variable DC power supplies, oscilloscope and function generator.

Part A – Getting started.

After performing the instruction for setting up the NI Elvis II and Emona DATEx module and connecting is to a personal computer, NI ELVISmx instrument is launched.

Part B – The NI Elvis II Digital Multimeter.

Clicking the DMM icon on the Launcher runs the digital multimeter virtual instrument. The virtual instrument will not activate the hardware until we click its run control.

Question 1:

Given that you’ve not been asked to connect the digital multimeter’s input to anything yet, why does the DMM read very small values of voltages and current instead of zero?

The offset voltages and currents which are electrical noises are produce due to the internal circuitry of the system. We aware that the components in our system have limits in their accuracy due to the inefficiency of the manufacturing process although that is just negligible error.

Part C – The NI Elvis II Variable Power Supplies

After launching the VPS virtual instrument and setting in on manual mode, we wired up the set up below.

This is the output for the VPS’s minimum positive voltage

This is the output for the VPS’s maximum positive voltage

This is the output for the VPS’s maximum negative voltage

This is the output for the VPS’s minimum negative voltage

0.34381 V 12.504 V

-12.499 V -0.12802 V

Part D - The NI Elvis II Oscilloscope

After launching the Oscilloscope virtual instrument and setting it up. The figure below is wire up to observe and measure the Datex signal.

Maximum output voltage

This is the ouput of the Datex’s Master Signal

1.301 V

2.083 kHz

3.692 V

0.48 ms

Part E – NI Elvis II Function Generator

We launched the Function Generator virtual instrument, set it to manual mode and wired the connection describe on the figure. We varied the amplitude from its minimum to its maximum output.

This is the output for the function generator’s maximum amplitude

This is the output for the function generator’s maximum amplitude

V p = 5.005 V

V p = 386.485 mV