NI myDAQ User Guide | © National Instruments | 19
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 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
5µs.
• Trigger settings: Immediate and Edge Trigger Types are supported. When using Edge
Trigger Type, you can specify a Horizontal Position of 0% to 100%.
Figure 13. NI ELVISmx Oscilloscope
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