Hioki 3550 - Auto Power off

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Chapter 5 Advanced Measurement Functions
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5.8 Auto Power Off
In the following states, if there is no switch operation for 30
minutes the unit automatically powers off.
When the resistance value is "----" indication.
During hold
On the comparator setting screen
During the printing output
During reading the memory data
For continuous measurement, in some cases it may be
necessary to disable the auto power off function. Do this as
follows.
1. Turn the power off.
2. Press the
POWER
key on the unit while holding down the
HOLD
key simultaneously. Press the
HOLD
key for a
while. The auto-power off setting screen will appear.