Rigol DS1104B Guia do Utilizador descarregar pdf (Página 126)

RIGOL

User’s Guide for DS1000B series

2-96

Time Measurements

The DS1000B series oscilloscopes provide 12 kinds of timing parameters

auto-measurements: Frequency, Period, Rise Time, Fall Time, +Width, -Width, Delay

A→B , Delay A→B , +Duty and –Duty, Phase A→B ,Phase A→B .

Figure 2-135 shows a pulse with some of the time measurement points.

Figure 2-135 Time parameters

Rise Time: Time that the rising edge of the first pulse in the waveform takes to rise

from 10% to 90% of its amplitude.

Fall Time: Time that the falling edge of the first pulse in the waveform takes to fall

from 90% to 10% of its amplitude.

+Width: The width of the first positive pulse in 50% amplitude points.

-Width: The width of the first negative pulse in the 50% amplitude points.

Delay A→B : The time delays between the channel A and channel B at the rising

edge.

Delay A→B : The time delays between the channel A and channel B at the falling

edge.

Phase A→B : The phase between the channel A and channel B at the rising edge.

Phase=(delay/source A period)×360°

Phase A→B : The phase between the channel A and channel B at the falling edge.

+Duty: +Duty Cycle, defined as +Width/Period

-Duty: -Duty Cycle, defined as -Width/Period.

10%

50%

90%

-Width

+Width

Fall Time

Rise Time

1 2 ... 121 122 123 124 125 126 127 128 129 130 131 ... 165 166

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