Tektronix, Inc. P6240, User Manual

Page: 42 / 321

Example 2: Grouping Waveforms
1–22
TLS 216 User Manual
NOTE . You might wonder why channel 1 displays a zero in the binary readout
instead of one. Remember, the logic scope displays binary values based on logic
thresholds. The procedure just listed changed only the Group 2 threshold levels
and, therefore, the probe calibration signal in Group 1 still qualifies as a low
logic level.
Cursors also measure time and amplitude. Read about using cursors (and the
binary readout) in Measuring Waveforms with Cursors on page 3–81.
Deleting Waveform Groups
When creating new groups, you may want to delete groups you no longer use.
Do the following steps to delete a waveform group and make its channels
available for creating new groups.
1. Press the button corresponding to the group, one of Group 1 through
Group 8, that you want to delete.
2. Press GROUP MENU
➞
Group Definition (main)
➞
Delete Group.
The logic scope removes the group which, in turn, removes all its channels
and its readout from the screen. It continues to make the released channels
available for including in new or existing groups or for use as trigger
sources. However, it will not display them until you include them in a new
or existing group.
NOTE
. You cannot delete all groups. If you try to delete the last defined group,
the logic scope will retain the group, assign it Channel 1 as first, last, and
selected channel, and display it on screen.
NOTE
. Sometimes you may just want to end display of a group, rather than
deleting that group. In that case, use the GROUP OFF button to turn the display
of the selected group off. To later restore display of the group, select it and turn
it on in the Display Group Mode menu (press GROUP MENU).