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Volume Control: The dial,
located under the headphone
jack, controls the volume of the
speaker or headphones.
AC Adaptor Jack: The AC/DC
adaptor is in the 9 volt range
within a current range of 200 to
300 milliamperes.
This symbol indicates that the
inner core of the plug of an AC
adaptor is negative and that the
outer part of the plug is positive.
If the symbol on our AC/DC
adaptor does not match the
above symbol, confirm its
compatibility at its place of
purchase.
Serial Port: Plug in a serial
cable here to connect the
Deutsch/Englisch Professor
PRO to your PC using the
BOOKMAN Connectivity Kit
(available at
www.franklin.com/de).
Using the Special Features
Serial Port
AC Adaptor Jack
Volume Control