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4-10 Test Leads Improper Connection Warning
The meter beeps as well as displays “InErr” to warn the user
against possible damage to the meter due to test leads improper
connections to the
, or
measuring jacks when
other function (like voltage function) is selected. (Temperature
measurement function is an exception.)
Note:
“InErr” warning may be indicated due to weak battery even if
the test leads are connected properly.
4-11
Crest capture mode (Sampling time: 0.8 ms)
Press the CAPTURE button to activate the crest (Instantaneous
Peak-Hold) mode to capture voltage or current signal duration
which is longer than 0.8 ms.
and MAX indicator
turns on. The meter beeps when new MAX (maximum) or MIN
(minimum) reading is updated. Press the button to read the
MAX and MIN readings alternately. Press the button for 1 sec. or
more to exit the crest mode. Auto-ranging (up range) remains,
and Auto Power Saving is disabled automatically in this mode.
4-12
MAX/MIN/AVG Recording Mode
Press the REC button to activate the MAX/MIN/AVG recording
mode, and
, MAX, MIN, and AVG turn on. The meter
beeps when new MAX (maximum) or MIN (minimum) reading
is updated. Press the button to show the MAX , MIN, and AVG
readings in sequence. Press the button for 1 sec. or more
again to exit the MAX/MIN/AVG recording mode. Auto-ranging
remains, and Auto Power Saving is disabled automatically in this
mode.
4-13
Relative Measurement
Press the
REL button to activate the relative measurement
mode and
indicator turns on. The relative measurement
mode offsets the meter to display relative values against a
reference. The meter displays its readings subtracting the
reading at the moment the
REL button is pressed. Press the
REL button again to exit the relative measurement mode.
This feature is available also while the MAX/MIN/AVG recording
mode.
4-14 Back Light
Press the SELECT button for 1 sec. or more to turn the backlight
on. (Automatically turns off after approx. 15 sec.)
Press the SELECT button again for 1 sec. or more to turn the
backlight off.
4-15 Terms
Analog bar graph
The analog bar graph provides a visual indication of
measurement like a traditional analog meter needle.
True RMS
True RMS is a term which identifies a DMM that responds
accurately to the effective RMS value regardless of the
waveforms such as square, sawtooth, triangle, pulse trains,
spikes, as well as distorted waveforms with the presence of
harmonics. This instrument employs the True-RMS (Root-Mean-
Square) detection.
Crest Factor
Crest Factor is the ratio of the Crest (instantaneous peak) value
divided by the True RMS value. Most common waveforms such
as sinusoidal wave and chopping wave have a relatively low
crest factor. A low duty cycle wave form like pulse string has
a high crest factor. For voltages and crest factors for typical
waveforms, see the table below.
