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Scope Multimeter Operation and Controls
To activate the Threshold function, select the Threshold icon, then select Continue from the
confirmation screen (Figure 5-21). Once selected, the Threshold function remains active until the
test is exited.
Figure 5-21 Auto Threshold Confirmation Screen
If after enabling the Threshold function, if the signal is still not displayed, reduce the vertical scale
setting. Sometimes a low frequency signal may not display if the vertical scale is set too high. If the
signal still seems incorrect use the lab scope to verify the signal integrity and signal spacing. Slow
or unequal spacing will display as a band or ragged signal, depending on the sweep setting.
Refresh
Selecting the Refresh icon (Figure 5-22) clears the active trace(s) displayed and restarts the
signal tracking from zero. It also clears the minimum, maximum and live measurements displayed
for both channels.
Use the Refresh feature to:
• Track the variation in a component or circuit under a certain condition. If the condition
changes, Refresh lets you start tracking again to see the change.
• Verify that a connection problem you found by looking for a dropout or spike in min/max values
has been fixed.
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