Chapter 6
VirtualBench-DMM
© National Instruments Corporation
6-5
Getting Started with VirtualBench
e.
Enter the value of the shunt resistor in the Current Shunt
Resistor control.
f.
Click OK.
g.
Click the Current AC or Current DC button in the Function
selector, depending on which type of voltage you connected.
h.
Click Run. VirtualBench-DMM continuously acquires and
displays current measurements in the display window.
i.
If the DMM display shows +CLIP or –CLIP, confirm the input
signal does not exceed the range of your DAQ device or IVI
instrument and the input signal does not exceed the selected range.
j.
Click Run again to stop the measurement.
4.
Measure resistance. If you are using an NI 4060 PCI/PXI-based
multimeter, a DAQMeter DAQCard-4050, or an IVI device, skip to
Step 4g.
If you are using any other device, you must use a precision external
current source to measure resistance. Complete these steps to
configure your current source:
a.
Connect a precision current source to the channel you specified in
Step 1. Refer to the user manual of your DAQ device for details.
b.
Connect the resistor you want to measure across the same
terminals.
c.
Select Edit»Settings on the front panel.
d.
Select the Current and Resistance tab.
e.
Enter the value of the current source in the Current Source
control.
f.
Click OK.
g.
Click the Ohms button in the Function selector.
h.
Click Run. VirtualBench-DMM continuously acquires and
displays resistance measurements in the display window.
i.
If the DMM display shows +CLIP or –CLIP, confirm the input
signal does not exceed the range of your DAQ device or IVI
instrument and the input signal does not exceed the selected range.
j.
Click Run again to stop the measurement.