Tektronix, Inc. P6240, User Manual

Page: 40 / 321

Example 2: Grouping Waveforms
1–20
TLS 216 User Manual
Select a Display Mode
The logic scope can display a waveform group in any of three display modes:
Analog, BusForm, or Timing Diagram. The waveform group currently displayed
appears in Analog mode, which displays analog waveforms overlapped, with
their ground levels superimposed, when set to ALL. Do the following steps to
select a new display mode.
1. Press Display in the main menu.
2. Press Timing Diagram. Use the vertical position knob to center the display
vertically.
There are several important points to observe here (see Figure 1-15):
H
The logic scope vertically skews the waveforms relative to each other so
you can compare and measure the time relation between any two
waveform edges of all waveforms in the group.
H
The logic scope intensifies the channel currently selected in the Group
Definition menu (true for all display modes).
H
The logic scope displays the waveforms as flat lines, since Timing
Diagram and Bus modes display amplitude levels based on how the
compare relative to the settings for Display Thresholds. (The amplitude
of the probe calibration signal qualifies as a low TTL level at all times.)
Side Menu Title
Group 6, Timing Mode,
Ch 6 – Ch 3
Figure 1-15: Group 6 Displayed as a Timing Diagram