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UTD2000M User Manual
Fall: Time taken for the amplitude of a waveform to fall from 90% to 10%.
Positive pulse width: Pulse width for positive pulse at 50% of amplitude.
Negative pulse width: Pulse width for negative pulse at 50% of amplitude.
Positive duty ratio: Ratio between positive pulse width and cycle.
Negative duty ratio: Ratio between negative pulse width and cycle.
‐Overshoot: Ratio between the difference between "Min" and "Low" and the amplitude after waveform
falls.
‐Preshoot: Ratio between the difference between "Max" and "High" and the amplitude before waveform
falls.
BurstWidth: The duration of burst pulse, measure the whole waveform.
FRR: Time between first rising edges of CH1 and CH2.
FRF: Time between the first rising edge of CH1 and the first falling edge of CH2.
FFR: Time between the first falling edge of CH1 and the first rising edge of CH2.
FFF: Time between the first falling edges of CH1 and CH2.
LRR: Time between the first rising edge of CH1 and the last rising edge of CH2.
LRF: Time between the first rising edge of CH1 and the last falling edge of CH2.
LFR: Time between the first falling edge of CH1 and the last rising edge of CH2.
LFF: Time between the first falling edge of CH1 and the last falling edge of CH2.
2. Oscilloscopes with bandwidth more than 100MHz can auto measure the following time parameters,
followed by their respective definitions:
RiseTime: Time taken for the amplitude of a waveform to rise from 10% to 90%.
FallTime: Time taken for the amplitude of a waveform to fall from 90% to 10%.
Positive pulse width: Pulse width for positive pulse at 50% of amplitude.
Negative pulse width: Pulse width for negative pulse at 50% of amplitude.
Delay (rising or falling edge): Time delayed between "from waveform" to "to wave" (during advanced
measurement)
Positive duty ratio: Ratio between positive pulse width and cycle.
Negative duty ratio: Ratio between negative pulse width and cycle.
2.9 Cursor Measurement
Press CURSOR key to display measurement cursor and cursor menu, and then use "MULTIPURPOSE" knob to
change cursor position.
Under CURSOR mode, the cursor can be moved for measurement. There are two modes available, which are the
voltage and the time. When measuring voltage, the cursor type has first to be set as voltage, then the positions of
the two cursors should be adjusted respectively by pressing "SELECT" key and by turning "MULTIPURPOSE" knob
prior to the measurement of ΔV. Likewise, if cursor type has been set as time, we can use them to measure Δt.
Cursor also has another two modes, which are independent and tracking. Under independent mode, we can
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