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3.9.
Power Supply
3.9.1.
DNR900 in Receiver Mode
The Receiver unit is powered via the USB port of the PC,
when connected via the mini USB cable. In addition, the unit
can run for a limited time (up to three hours) from an internal
NiMh rechargeable battery. To charge the internal battery,
connect the unit to the AC power supply supplied with the
DNR900. The internal battery pack is generally used as a
back up power supply in the event the external power supply
fails.
Note:
When in Receiver mode, the unit must be connected to
external power at all times. While running on internal power,
the unit will run for only several hours before shutting down
and therefore shutting down the DataNet network which the
Receiver is managing.
3.9.2.
DNR800 and DNR900 in
Repeater Mode
The DNR800 must be connected to external AC power at all
times. This device does not have an internal battery so when
the external power supply is disconnected the unit will
shutdown.
When in Repeater mode, the DNR900 must be connected to
external AC power at all times using the supplied AC charger.
Otherwise, when the internal backup batteries drains and
shuts down the unit, all the end units dependent on the
Repeater to transmit to the Receiver, will not be detected by
the software. The user won’t be able to monitor data readings
from these units until the Repeater comes back online.
