204.4291.04
23
Check in
chapter for cable assembly and pinout.
Always try to access the equipment using notebooks. The RS232 interfaces are very sensitive to the
voltage differences between grounding systems, which happens when a computer connected to an
AC network is linked to the DM4610. If the voltage difference between the AC grounding and the
grounding available for the DM4610 is
too much, both the DM4610 serial port and the computer's serial port may be damaged.
3.5.3.2.
MGMT
E
THERNET CABLE
A standard Fast Ethernet cable, with wiring and distribution of standard signals, interlinks the DM4610 to the
management network.
For detailed information about the interface configuration, consult
into the
chapter
Logging in for First Time
.
3.5.4.
I
NSTALLING
O
PTICAL
C
ABLES
The DM4610 uses SFP+ and SFP (Small Form-factor Pluggable) modules to provide optical accesses.
According to the defined modules, the units that initially have optical interfaces will only operate with optical
fibers with LC connectors.
See
Installing and Removing SFP Modules
, for details regarding how to handle SFP modules.
Due to the excess of cable on the left of the rack, there is always a risk of damaging the fibers. To prevent this
effect and considering that the optical fibers are very thin, the installer must always, do passage of cables in
side upper or below the chassis, using the lower cable guide.
During the installation of the fibers, it is highly recommended to use corrugated tubes or plastic
troughs to hold the fibers linked to the equipment, thereby protecting them from possible
breakages or damage and, consequentially, interruptions in service.
The curvature radius of the optical cables cannot be too small. Fibers with a small radius
present micro cracks that drastically reduce the reach of the optical signal. Fibers from different
manufacturers have different characteristics. To verify the curvature radius is adequate, please
check the characteristics of the cable used in the manufacturing manual.
The optical interface modules use transmitters with invisible laser radiation. Never look
directly at the laser terminals or the optical fiber. Exposure to laser emission may cause partial
or total vision loss.
3.5.4.1.
O
PTICAL CABLES IN
GPON
I
NTERFACES
The DM4610 Chassis has 8 front connectors for the optical GPON SFP interfaces.
