Tektronix TPS2012B, Руководство пользователя

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Application Examples
5. Turn the multipurpose knob to place a cursor on the rising edge of the pulse.
6. Push the Cursor 2 option .
7. Turn the multipurpose knob to place a cursor on the falling edge of the pulse.
You can see the following measurements in the Cursor Menu:
The time at Cursor 1, relative to the trigger.
The time at Cursor 2, relative to the trigger.
The Δ (delta) time, which is the pulse width measurement.
Type
Time
Source
CH1
Δ t 500.0µs
1/ Δ t 2.000kHz
Δ V 1.38V
Cursor 1
0.00s
0.98V
Cursor 2
500µs
-1.00V
NOTE.
The Positive Width measurement is available as an automatic measurement
in the Measure Menu. (See page 107, Taking Measurements.)
NOTE.
The Positive Width measurement also displays when you select the
Single-Cycle Square option in the Autoset Menu. (See page 99, Square Wave
or Pulse.)
Measuring Rise Time After measuring the pulse width, you decide that you need to check the rise time
of the pulse. Typically, you measure rise time between the 10% and 90% levels of
the waveform. To measure the rise time, follow these steps:
1. Turn the Horizontal Scale knob to display the rising edge of the waveform.
2. Turn the Vertical Scale and Position knobs to set the waveform amplitude to
about fi ve divisions.
3. Push the channel 1 .
4. Push Volts/Div ► Fine .
5. Turn the Vertical Scale knob to set the waveform amplitude to exactly fi ve
divisions.
48 TPS2000B Series Digital Oscilloscope User Manual