Tektronix, Inc. P6240, User Manual

Page: 119 / 321

Customizing the Display
TLS 216 User Manual
3–37
Variable Persistence style accumulates the record points on screen over many
acquisitions and displays them only for a specific time interval. In that mode, the
display behaves like that of an analog oscilloscope. You enter the time for that
option with the keypad or the general purpose knob.
Infinite Persistence style accumulates the record points until you change a
control (such as scale factor) that causes the display to be erased.
To Set Intensity
Use the Display Intensity menu to set text, graticule, and waveform intensity
(brightness) levels. To set the intensity:
1. Press DISPLAY
➞
Intensity (main)
➞
Text/Grat or Waveform (side).
2. Enter the intensity percentage values with the keypad or the general purpose
knob.
All intensity adjustments operate over a range from 20% (close to fully off) to
100% (fully bright).
To Set Readout Options
Readout options control whether the trigger indicator, trigger bar, and current
date and time appear on the display. The options also control the style of trigger
level bar, long or short, the logic scope displays. To set the readout options:
1. Press DISPLAY
➞
Readout (main).
2. Press Display ‘T’ @ Trigger Point (side) to toggle on and off the display of
a ‘T’ to indicate the trigger point. (The trigger point indicates the position of
the trigger in the waveform record.)
3. Press Trigger Bar Style (side) to select either the short or the long trigger
bar or to turn the trigger bar off. (See Figure 3-18. Note that both styles are
shown for illustrating purposes, but you can only display one style at a time.)
The trigger bar is a visual indicator of the trigger threshold level. The logic
scope only displays the trigger bar when the trigger source is a waveform
displayed in a live (as opposed to reference) group. It displays two trigger
bars when displaying delay triggerable acquisition — one for the main and
one for the delayed timebase.
Sometimes, especially when using the hardcopy feature, you may wish to
display the current date and time on screen. For more information about
displaying and setting date and time, see Date/Time Stamp the Hardcopy on
page 3–89.