Using The Features; All Models - Greenlee DM-820A Instruction Manual

Using the Features

All Models

• Dual Digital Display: These meters can display two measurements, such as AC voltage and
frequency, at the same time. Display combinations are shown using large symbols to indicate the
measurement on the primary display and small, raised symbols to indicate the measurement on
the secondary display. For example, "VAC
measurement, and the secondary display contains the frequency measurement.
• SELECT: Press momentarily to toggle between functions, or to toggle between AC and DC when
measuring current and millivolts.
• RANGE: Press once to enter the manual ranging mode. The
display. Press repeatedly to step through the ranges. Press and hold to return to the automatic
ranging mode.
Note: When using MAX-MIN, HOLD, or ∆ mode, pressing RANGE will cause the meter to exit that
mode.
• ∆: Finds the difference between two measurements. While taking a measurement, press ∆ to set the
display to zero. The ∆ icon will appear on the display. Take the second measurement. The value on
the display will be the difference between the two measurements. Press again to exit this mode.
• HOLD : Press momentarily to hold the present value on the display. Press again to exit this mode.
This feature does not affect the bar graph.
: Press and hold until backlight illuminates. Press and hold again to turn off. The backlight
•
automatically turns off after approximately 30 seconds to extend battery life.
• Automatic Power Off: To extend battery life, the meter will shut itself off after approximately
30 minutes of inactivity. To restore power, press either the SELECT, RANGE, ∆, or HOLD button
momentarily, or turn the selector to OFF and then back on. To disable this feature, press SELECT
while turning the meter on.
• Disabling the Beeper: Hold down the RANGE button while turning the meter on to temporarily
disable the beeper feature. Turn the selector to OFF and then back on to enable the beeper.
DM-820A, DM-830A, and DML-430A Only
• CREST : Press momentarily to activate the crest recording mode.The input value is measured
every 1 ms in this mode.
crest value. Press repeatedly to select the desired display: maximum, minimum, or maximum–
minimum crest value. Press and hold to exit this mode.
The automatic power off feature is disabled when using this function.
Note: When using the CREST function, pressing RANGE will cause the meter to exit this mode.
• REC : Press momentarily to activate the MAX/MIN/AVG* recording mode. The input value is
measured every 50 ms in this mode. "MAX MIN" and "AVG"* will appear on the display. The LCD will
display the actual input value. The meter will beep whenever the maximum or minimum is updated.
Press repeatedly to select the deired display: maximum, minimum, maximum–minimum, average*,
or actual input. Press and hold to exit this mode.
*Average function is not available on DML-430A.
The automatic power off feature is disabled when using this function.
8
Hz " means the primary display contains the AC voltage
and "MAX" will appear on the display. The LCD will display the maximum
icon will disappear from the