Example 3: Automated Measurements
TDS 620A, 640A, & 644A User Manual
1Ć19
Press here to
remove menus
from screen.
Figure 1-17: Four Simultaneous Measurement Readouts
The Measure menu lets you remove measurements you no longer want
displayed. You can remove any one measurement, or you can remove them
all with a single menu item.
Press MEASURE ➞ Remove Measrmnt (main) ➞ Measurement 1, Mea-
surement 2, and Measurement 4 (side) to remove those measurements.
Leave the rise time measurement displayed.
By default, the measurement system will use the 10% and 90% levels of the
waveform for taking the rise time measurement. You can change these values
to other percentages or change them to absolute voltage levels.
To examine the current values, press Reference Levels (main) ➞ High Ref
(side).
The General Purpose Knob
The general purpose knob, the large knob, is now set to adjust the high
reference level (Figure 1-18).
Removing
Measurement
Readouts
Changing the
Measurement
Reference Levels
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