3-7 Selecting Measurement Range ( , and )
Ranging operations are performed by using the , and
buttons (see Figure 3-3).
Measuring ranges can be selected automatically by the meter in
“Auto-ranging” or manually operated by the user.
The range setting is synchronous for dual display for current or voltage
measurement. In auto ranging mode, the range setting for both the primary
and secondary display are corresponding to the higher range of two displays.
In manual ranging mode, the range setting for secondary display is following
to the range setting of primary display.
Auto-Ranging
Press
to toggle in and out of manual ranging. When meter is in
auto-range mode, the AUTO annunciator is lit.
In auto-range, the meter selects the next higher range automatically
when a reading is greater than full scale. If no higher range is available,
‘OL’ (overload) will be displayed on primary or secondary display.
Likewise, the meter will automatically selects a lower range when a
reading is less than approximately 9.5% of the full scale.
That will be another way to set Auto-ranging for Current measurement.
You can press
then to toggle auto-ranging path for mA and
A terminals.
Manual Range
Press
to toggle in and out of manual ranging. The range user is in
when user enters the manual range mode will become the selected range.
In manual range, the meter remains in the selected range regardless of
input.
Press
to back auto-ranging. The range setting is performed both
on readings shown in the primary display and secondary display.
Selecting A Measuring Range
To manually select a range,
to toggle in (and out) of the manual ranging mode, or
or to select higher range or lower range directly.
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