CANOGA PERKINS N525 Ethernet Termination Service Unit - Manual (Page 15)

N525 Ethernet Termination Service Unit 2-5
b. Connect the DC power as follows:
• The N525 support both Positive and Negative grounded DC Power.
Loosen the screws for the GND and +48 or -48 VDC terminals
• Slide the wires under the square washers, and tighten the screws taking
care not to cross Power and Ground. The DC Power Terminal Block is
removable for ease of installation and replacement. It is recommended
the Terminal Block be removed when connecting power to avoid
accidentally crossed or shorted power leads from damaging the N525 or
your DC Power System.
• Use an ohmmeter to verify that +/- 48 VDC Power lead is not shorted to
GND.
• Connect the power cables to the power source.
• Insert the Power Terminal Block into the N525.
Figure 10 – DC Power Connector Location
6. Dirty optical connectors are a common cause of link loss or attenuation problems,
especially for single mode fiber (SMF). Clean the connectors before plugging in a cable
and whenever there is a significant or unexplained light loss. To prevent contamination,
always install protective dust covers on unused fiber optic connectors.
a. Wipe the ferrule and the end-face surface of the male fiber coupler with a lint-
free, isopropyl alcohol pad from a fiber cleaning kit.
b. Use canned air to blow dust out of the female fiber coupler.
7. Connecting Optical Fiber to Optical Interface Modules:
a. Plug in the optical cables with Tx (optical output) to Rx (optical input), Rx to Tx
orientation.