Measurements 14
Keysight InfiniiVision 3000 X-Series Oscilloscopes User's Guide 225
• N = the number of measurements taken.
•x
i
= the ith measurement result.
• x = the mean.
Ratio
The Ratio measurement displays the ratio of the AC RMS voltages of two sources,
expressed in dB. Press the Settings softkey to select the source channels for the
measurement.
Time Measurements
The following figure shows time measurement points.
The default lower, middle, and upper measurement thresholds are 10%, 50%, and
90% between Top and Base values. See "Measurement Thresholds" on page 234
for other percentage threshold and absolute value threshold settings.
• "Period" on page 226
• "Frequency" on page 226
• "Counter" on page 227
• "+ Width" on page 228
• "– Width" on page 228
• "Bit Rate" on page 228
• "Burst Width" on page 228
• "Duty Cycle" on page 228
• "Rise Time" on page 229
• "Fall Time" on page 229
Rise Time
+ Width
Fall Time
- Width
Period
Middle
Upper
Thresholds
Lower
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