LEM HEME ISO 1000 Manuel D'utilisation page 15

Basic operation

Select the voltage measurement function by turning the rotary switch to the
V position
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Connect test leads to the voltage source – the instrument displays the True
RMS value and the frequency of any AC component
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Pressing the key cycles the display through the AC and DC
components of the voltage. The analog bargraph always shows the True
RMS (AC+DC) value
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To activate the LIMIT (alarm) function press the
limit press the key again and use the
the key to increment the digit. When in this mode pressing the
first turns the lower limit value off completely. To set the higher limit press
the key and use the arrow keys as above. To activate the LIMIT
function press the key again.
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To deactivate the LIMIT (alarm) function turn the rotary switch to a new
position
key. To set the lower
to selects the digit and
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