3.4 Power supply EHP-50
Narda NBM-550 23
3.4 Power supply EHP-50
The EHP-50 Analyzer is fitted with a fixed, non-
exchangeable rechargeable battery which provides at least
9 hours of operation when fully charged. The battery is
charged using the charger unit supplied. It takes
approximately 6 hours to recharge the battery if it is almost
completely discharged.
Note: You cannot operate the EHP-50 with the charger unit
connected as this considerably affects the measurement
characteristics of the EHP-50.
Charging the battery
Starting the charging cycle:
✓ The AC line voltage must match the operating voltage of
the charger unit.
Connect the charger unit to the AC line first and then
connect it to the charger socket on the EHP-50
(Figure 2 13d).
The charging cycle starts and the DATA LED flashes
rapidly:
– Orange: battery charging
– Green: battery fully charged
Note: You can charge the battery with the EHP-50 switched on or
off. If you connect the charger unit when a measurement is
in progress, the measurement will stop and the charging
cycle starts. The EHP-50 remains switched off when you
unplug the charger unit.
WARNING
Charging the battery with an unsuitable
charger unit
The battery can overheat, explode or ignite
spontaneously.
You must only use the charger unit supplied with the
device for charging the battery.
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