Select a communications measurement
From the Measure menu, select Measurement Setup; then open the Comm tab.
To use
Use the Comm tab to select automatic communications measurements.
1. Select a source with the Channels Selector.
2. Click a Measurements button to add a Communications measurement to the Measure list:
Communication measurements
Ext Ratio Eye Width Jitter P-P Noise RMS
ExtRatio% Crossing% Jitter RMS S/N Ratio
Ext Ratio (dB) Eye Top Jitter 6s CycDistorition
Eye Height Eye Base Noise P-P Q-Factor
3. Click Display On in the upper-right corner of the Measurement Setup Control Window to turn the measurement display on
and off.
Behavior
Measurements are updated approximately three times a second (or less for long record lengths). Measurements are calculated
after each acquisition. You can display up to eight automatic measurements.
TIP. Most Comm measurements require either WfmDB or FastAcq mode.
You may need to select Infinite Persistence display mode to accumulate enough data for the Comm measurement to work.
NOTE. You can also select the individual measurements directly from the Measure menu Comm submenu.
What do you want to do next?
Learn about taking amplitude measurements.
Learn about taking timing measurements.
Learn about other measurements.
Learn more about the measurement list.
Measurement setups
280 DPO70000SX, MSO/DPO70000DX, MSO/DPO70000C, DPO7000C, and MSO/DPO5000B Series
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