7
Power Supply
AC (Mains) Operation
•
Only use the supplied AC (mains) unit NR 90-1 for the
set.
• Adjust the local mains voltage on the AC (mains) unit.
220... 240V
110 ... 127V
• Connect the mains unit to the DC IN 9 V socket
(30)
(30). This automatically disconnects the inserted
batteries.
- No responsibility can be accepted for damage due to
operation with the voltage selector set to the wrong
position.
•
Remove the batteries if the unit is to be operated perma-
nently on the mains!
Battery Operation
With four 1.5 V batteries, type IEC LR 6 or AA.
We recommend the use of alkaline-manganese batteries
with low mercury constituent or no mercury at all.
•
Disconnect the plug of the AC (mains) unit from the DC IN
9 V socket (30).
•
Open the cover of the battery compartment (10)
(on back of unit).
•
Insert the batteries with correct polarity
(see scheme on bottom of battery compartment).
•
For this, observe the order of the batteries and the posi-
tion of the take-out ribbon (see Fig. to the right)
Battery Check
When the batteries get weak, a battery symbol (
)
will appear in the display (4).
