3 Preparation for use ELT-400
3-2
3.2 Power supply
The ELT-400 is designed to be powered from alkaline or rechargeable
batteries. The AC adapter / charger unit can also be used to provide power.
Note: The measurement characteristics of the ELT-400 may be affected
by the effect of the cable on the field when the instrument is
powered from the AC adapter / charger unit.
Operation from rechargeable batteries
The ELT-400 is powered from four 1.2 V NiMH batteries (Mignon, size AA,
IEC R 6).
The operating time from a set of fully charged batteries is about twelve
hours.
Note: The batteries are supplied pre-charged. Several charge /
discharge cycles will be needed in order to achieve their full
capacity.
Handling rechargeable batteries
• Always handle rechargeable batteries with care.
• Avoid incorrect polarity.
• Do not short-circuit the battery contacts.
• If possible, leave the ELT-400 connected to the AC adapter / charger unit
to ensure that it is always ready for use.
• Do not leave discharged batteries in the instrument for a long period of
time.
ª Charging the rechargeable batteries: see page 3-3
Operation from alkaline batteries
Four 1.5 V alkaline batteries (Mignon, Size AA, IEC LR 6) can be used in
the ELT-400 instead of rechargeable batteries.
The operating time from alkaline batteries is about 20 hours.
ª Replacing the rechargeable batteries and alkaline
batteries: see page 6-1
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