Tektronix, Inc. P6240, User Manual

Page: 43 / 321

TLS 216 User Manual
1–23
Example 3: Taking Measurements Automatically
The TLS 216 Logic Scope can measure many waveform parameters automatical-
ly and read out the numeric results on screen. Do the following tasks to discover
how to select various measurements, to take them on various waveforms, and to
display a snapshot of most measurements.
Select the Measurements
To use the automated measurement system, you must have a stable display of
your signal. Also, the waveform must have all the segments necessary for the
measurement you want. For example, a rise time measurement requires at least
one rising edge, and a frequency measurement needs at least one complete cycle.
1. If you are not continuing from the previous example, follow the instructions
on page 1–7 under the heading Setting Up for the Examples.
2. If you have changed any control settings since resetting the logic scope, reset
it now: press SETUP
➞
Recall Factory Setup (main)
➞
OK Confirm
Factory Init (side).
3. Press AUTOSET.
4. Press MEASURE to display the Measure main menu. (See Figure 1-17.)
5. If it is not already selected, press Select Measrmnt (main). The readout for
that menu item indicates which channel or group the measurement will be
taken from. The logic scope takes most automated measurements on the
currently selected channel in the currently selected group.
The Select Measurement side menu lists some of the measurements that can
be taken on waveforms. The logic scope can take many different measure-
ments. It can continuously update and display up to four measurements at
any one time. Pressing the button next to the –more– menu item brings up
the other measurement selections.
6. Press Frequency (side). If the Frequency menu item is not visible, press
–more– (side) repeatedly until the Frequency item appears. Then press
Frequency (side).
Observe that the frequency measurement appears within the graticule area at
the right side. The measurement readout includes the notation C1, meaning
that the measurement is taken on the Channel 1 waveform.
To take a measurement on another channel, make sure the selected group
contains that channel (use the group front-panel buttons). Then use the