Motorola PTP 250 User Manual page 4

Safety and Regulatory
Using the correct power supply
Always use the Motorola Power over Ethernet injector unit (PoE power supply) or
Powered Indoor Unit (PIDU Plus) to power the ODU. Failure to use the correct power
supply could result in equipment damage and will invalidate the safety certification
and may cause a safety hazard.
Alternative DC supply
If the PTP 250 is to be powered from a DC supply (either as the primary power source
or as a backup to the AC supply), the DC supply must be input to the ODU via a PIDU
(not a PoE power supply). The DC supply must be connected to the PIDU DC IN
terminals. The DC supply must comply with the following requirements:
x
The voltage and polarity is correct and is applied to the correct terminals in the
PIDU.
x
The power source is rated as Safety Extra Low Voltage (SELV).
x
The power source is rated to supply at least 1 A continuously.
x
The power source cannot provide more than the Energy Hazard Limit as defined
by IEC/EN/UL60950-1, Clause 2.5, Limited Power (The Energy Hazard Limit is
240VA).
Powering down before servicing
Always power down and unplug the equipment before servicing.
Lightning protection unit (LPU)
Do not remove the LPU printed circuit board when the LPU is connected to the power
supply, as high voltages are present.
Non-Motorola power supply
Safety may be compromised if a different power supply is used than the one supplied
by Motorola as part of the system.
II
phn-2182_002v000
May 2011