External DC: 11 16 volt.
Power consumption approximately 2 watt dependent on selected modes of operation.
External DC source should have sourceimpedance less than 1 ohm and be able to supply at least 300 mA.
The mains adaptor Nor3XX is recommended for use with the instrument.
If the external supply falls below 9 V,
the instrument will use the internal batteries if available. If the instrument has switched off due to loss
of power or insufficient supply voltage, the instrument will automatically switch on and resume normal
operation after reapplying the external DC supply.
Socket for external dc:
LEMO plug type 0B XXXXX with positive voltage on centre terminal.
The instrument will automatically switch off if the battery or external voltage is too low for operation within
the stated specifi cations. The instrument has a calendar clock powered from the batteries or external DC-supply.
The clock is supplied from a charged capacitor during change of batteries. Contact your Norsonic service department
for change of this component.