CANOGA PERKINS 9145 Network Interface Device - Manual (Page 16)

9145 Network Interface Device 2-4
• DC Power Connection:
a. The 9145 support both Positive and Negative grounded DC Power. Loosen the
screws for the GND and +48 or -48 VDC terminals
b. 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 9145 or your DC Power System.
c. Use an ohmmeter to verify that +/- 48 VDC Power lead is not shorted to GND.
d. Connect the power cables to the power source.
e. Insert the Power Terminal Block into the 9145.
Caution: Reversing Power and Ground Leads can damage both the DC
source and the 9145. Damage due to reversing power is not covered
under the Warranty.
Figure 10 – DC Power Connector Location
6. Optical Connections:
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.
Cleaning Optical Connectors: 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. Use canned
air to blow dust out of the female fiber coupler.
Caution: To avoid damaging the fiber end-surface or connector, use extreme
care when installing or removing cables.
7. Connecting Optical Fiber to Optical Interface Modules: Plug in the optical cables with Tx
(optical output) to Rx (optical input), Rx to Tx orientation.