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10
Preparing the plug-on
transmitter for use
Inserting and replacing the batteries
For powering the plug-on transmitter, you can either use
two 1.5 V AA size batteries or the rechargeable Sennheiser
BA 2015 accupack.
̈ Slide the battery compartment cover ᕩ in the direction
of the embossed arrow until it clicks audibly and open
the cover.
̈ Insert the two batteries or the BA 2015 accupack as
shown below. Please observe correct polarity when
inserting the batteries/accupack.
̈ Close the battery compartment. The battery
compartment cover ᕩ locks into place with an audible
click.
Note:
For accupack operation of the transmitter, only use the
BA 2015 accupack in order to ensure optimum
operational reliability. For charging the accupack, only
use the L 2015 charger. Both the accupack and the
charger are available as accessories.
The accupack is fitted with an integrated sensor which is
– via a third contact – monitored by the electronics of
the plug-on transmitter and the charger. The sensor is
necessary for the following control purposes:
y The taking into account of the different voltage
characteristics of primary cells (batteries) and
accupacks. The battery status indications on the
displays, the transmission of transmitter battery
status information to the rack-mount receivers and
the switch-off thresholds at the end of the operating
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