User's Guide Part 2

Chapter 5: Installation Safety
DC supply
To power the ODU from a DC supply, use the PTP 650/700 AC+DC Enhanced Power Injector
(PSU) (Cambium part number C000065L002). Ensure that the DC power supply meets the
requirements specified in PSU DC power supply on page 3-15.
Powering down before servicing
Before servicing PTP 700 equipment, always switch off the power supply and unplug it from
the PSU.
Do not disconnect the RJ45 drop cable connectors from the ODU while the PSU is connected to
the power supply. Always remove the AC or DC input power from the PSU.
Primary disconnect device
The main power supply is the primary disconnect device. The AC+DC Enhanced power injector
is fused on the DC input. Some installations will also require an additional circuit breaker or
isolation switch to be fitted in the DC supply.
External cables
Safety may be compromised if outdoor rated cables are not used for connections that will be
exposed to the outdoor environment. For outdoor copper Cat5e Ethernet interfaces, always use
Cat5e cable that is gel-filled and shielded with copper-plated steel. Alternative types of drop
cable are not supported by Cambium Networks.
Drop cable tester
The PSU output voltage may be hazardous in some conditions, for example in wet weather. Do
NOT connect the drop cable tester to the PSU, either directly or via LPUs.
Grounding PTP-SYNC
In order to meet the safety requirements for deployment in Australia and New Zealand
(AS/NZS 60950-1), the PTP-SYNC unit, if deployed, must be grounded to a Protective Ground in
accordance with Local Electrical Regulations.
RF exposure near the antenna
Strong radio frequency (RF) fields will be present close to the antenna when the transmitter is
on. Always turn off the power to the ODU before undertaking maintenance activities in front of
the antenna.
Page 5-3