Opal DT-916N, Manual

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When the meter is first turned on, it automatically goes into
AutoRanging. This automatically selects the best range for the
measurements being made and is generally the best mode for most
measurements. For measurement situations requiring that a range
be manually selected, perform the following:
1. Press the RANGE button. The “AUTO” display indicator
will turn off.
2.Press the RANGE button to step through the available
ranges until you select the range you want.
3.Press and hold the RANGE button for 2 seconds to
exit the ManualRanging mode and return to AutoRanging.
DATA HOLD BUTTON
The Data Hold function allows the meter to "freeze" a measurement
for later reference.
1.Press the DATA HOLD button to “freeze” the reading on the
indicator. The indicator “HOLD” will be appear in the display.
2.Press the DATA HOLD button to return to normal operation.
Backlight
Press and hold the HOLD key for >1 second to turn on or off the
display backlight function.
Note: The HOLD feature will activate when the Backlight is turned
on. Press the HOLD key again to exit Hold.
RELATIVE BUTTON
The relative measurement feature allows you to make
measurements relative to a stored reference value. A reference
voltage, current, etc. can be stored and measurements made in