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National Instruments Corporation
21
NI myDAQ User Guide and Specifications
Oscilloscope (Scope)
The NI ELVISmx Oscilloscope (Scope) displays voltage data for analysis.
This instrument provides the functionality of the standard desktop
oscilloscope found in typical undergraduate laboratories. The
NI ELVISmx Oscilloscope SFP has two channels and provides scaling and
position adjustment knobs along with a modifiable timebase. The autoscale
feature allows you to adjust the voltage display scale based on the
peak-to-peak voltage of the AC signal for the best display of the signal.
The computer-based scope display has the ability to use cursors for
accurate screen measurements. This instrument has the following
measurement parameters:
•
Channel Source: Channels AI 0 and AI 1; AudioInput Left, and
AudioInput Right. You can use AI channels or AudioInput channels,
but not a combination of both.
•
Coupling: AI Channels support DC Coupling only. AudioInput
Channels support AC Coupling only.
•
Scale Volts/Div: AI channels—5 V, 2 V, 1 V, 500 mV, 200 mV,
100 mV, 50 mV, 20 mV, 10 mV and for AudioInput Channels—1 V,
500 mV, 200 mV, 100 mV, 50 mV, 20 mV, 10 mV.
•
Sample Rate: The Max Sample Rate available for AI and AudioInput
Channels: 200 kS/s when either one or both channels are configured.
•
Timebase Time/Div: The available values for both AI and AudioInput
channels: 200 ms to 5
s.
•
Trigger settings: Immediate and Edge Trigger Types are supported.
When using Edge Trigger Type, you can specify a Horizontal Position
of 0%–100%.
Figure 13.
NI ELVISmx Oscilloscope SFP
