Tempo Communications MM810 Manual De Instrucciones página 8

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, "VACHz" means the primary display
contains the AC voltage 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
from
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 Δ mode, pressing RANGE will cause the meter to exit
that mode.
• Δ: Finds the difference between two measurements. While taking a measurement, press Δ to
set the display to zero. The Δ 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, Δ, 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.
AC Measurement
AC measurements are usually displayed as RMS (root mean square) values. The RMS value
is equal to the value of a DC waveform, which would deliver the same power if it replaced
the time-varying waveform. Two AC measurement methods are average-responding RMS
calibrated and true RMS-reading.
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