Hioki 3290-10, Instruction Manual

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2.2 Connecting Power
2.2.2 Connecting the AC Adapter (Optional)
• Turn the meter off before connecting the AC adapter to the
meter and to AC power.
• Use only the specified Model 9445-02 AC ADAPTER (SA10-
0910N, SINO-AMERICAN). AC adapter input voltage range
is 100 to 240 VAC (with ±10% stability) at 50/60 Hz. To avoid
electrical hazards and damage to the meter, do not apply
voltage outside of this range.
• Make sure the power is turned off before connecting or discon-
necting the AC adapter.
• When using the AC adapter, note that current of approximately
3 mA is consumed regardless of whether the power switch of
the meter is on or off. (Battery power is not consumed, how-
ever, when power is turned off.)
• When the power supply is switched over from the battery to the
AC adapter or vice versa during peak measurement, an inac-
curate measurement result (i.e., value larger than the actual
value) may be displayed.
• While operating from the AC adapter, the remaining battery
charge indicator (bar graph) indicates the loaded output volt-
age (about 6V) of the AC adapter. Although this may not dis-
play as 100%, measurements are unaffected.
• The AC adapter may be used either with or without the batteries.
• If the AC adapter is connected but not providing power, mea-
surement is still possible if the batteries have been installed
(available backup time depends on battery condition).
When operating from the AC adapter, voltage is internally reg-
ulated to about 6 V. When battery voltage is higher than this
(such as with new batteries), the batteries power the meter
until battery voltage decreases, at which point operation
switches to the AC adapter.
1.
Confirm that the 3290-10 is
turned off.
2.
Remove the dust cap over the
AC adapter jack, and plug in
the AC adapter securely.
3.
Plug the AC adapter into a
wall outlet.
Connecting the AC Adapter