FibeAir
®
IP-10 IDU Installation Guide
1-8
•
For antenna ports, lightning protection is used that does not permit transients of a greater magnitude than
the following:
Open Circuit: 1.2-50us 600V
Short Circuit: 8-20us 300A
•
The ampacity of the conductor connecting the IDU frame to the DC return conductor is equal to, or
greater than, the ampacity of the associated DC return conductor.
Power Supply Notes
When selecting a power source, the following must be considered:
•
DC power can be from -40.5 VDC to -72 VDC.
•
Recommended:
Availability of a UPS (Uninterrupted Power Source), battery backup, and emergency
power generator.
•
Whether or not the power source provides constant power (i.e., power is secured on weekends or is shut
off frequently and consistently).
•
The power supply must have grounding points on the AC and DC sides.
•
The user power supply GND must be connected to the positive pole in the IDU power supply.
Power supply grounding should be in accordance with the following illustration:
