1 About This User Guide
6
Cable measuring card: A cable measuring card must NEVER be used at the ODU end
connected to power from the PIDU Plus. It must only be used at the bottom of the mast with
a multimeter. This is because the PIDU Plus voltage exceeds the limit allowed in some
countries for safe handling in wet conditions and therefore may create a safety hazard.
Alternative DC supplies: When using alternative DC supplies (via the PIDU Plus DC in
terminals as described in Section 2.8 “Redundancy and Alternative Powering
Config
urations”), such as battery-backed DC power source, the supply MUST comply with the
following requirements:
• The voltage and polarity is correct and is applied to the correct terminals in the PIDU Plus
• The power source is rated as SELV
• The power source is rated to supply at least 1A continuously
• The power source cannot provide more than the Energy Hazard Limit as defined by
IEC/EN/UL6090, Clause 2.5, Limited Power (The Energy Hazard Limit is 240VA)
Primary disconnect device: The main power supply is the primary disconnect device.
External cables: Safety will be compromised if external quality cables are not used for
connections that will be exposed to the weather.
Non-Motorola power supply: Safety will be compromised if a different power supply is used
than the one supplied by Motorola as part of the system.
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