Tektronix TPS2012B, Руководство пользователя

Страница: 133 / 184

Reference
Measure
Push the Measure button to access automatic measurements. There are eleven
types of measurements available. You can display up to fi ve at a time.
Push the top option button to display the Measure 1 Menu. You can choose the
channel on which to take a measurement in the Source option. You can choose the
type of measurement to take in the Type option. Push the Back option button to
return to the Measure Menu and display the selected measurements.
Key Points Taking Measurements. You can display up to fi ve automatic measurements at a
time. The waveform channel must be on (displayed) to make a measurement.
Automated measurements cannot be taken on reference waveforms, or while
using XY or scan mode. The measurements update about two times per second.
Measurement type De fi nition
Freq Calculates the frequency of the waveform by measuring the fi rst cycle
Period Calculates the time of the fi rst cycle
Mean Calculates the arithmetic mean amplitude over the entire record
Pk-Pk Calculates the absolute difference between the maximum and
minimum peaks of the entire waveform
Cyc RMS Calculates a true RMS measurement of the fi rst complete cycle of
the waveform
Min Examines the entire 2500 point waveform record and displays the
minimum value
Max Examines the entire 2500 point waveform record and displays the
maximum value
Rise Time
Measures the time between 10% and 90% of the fi rst rising edge of
the waveform
Fall Time Measures the time between 90% and 10% of the fi rst falling edge of
the waveform
Pos Width Measures the time between the fi rst rising edge and the next falling
edge at the waveform 50% level
Neg Width Measures the time between the fi rst falling edge and the next rising
edge at the waveform 50% level
None Does not take any measurement
Print
When the Save/Recall ► Save All ► Print Button option is set to Prints, you
can push the print button to send the screen image to a printer or computer.
You can set up the oscilloscope to send a screen image to your printer through the
Utility ► Options ► Printer Setup menu. (See page 72, Printer Setup .)
TPS2000B Series Digital Oscilloscope User Manual 107