2-16
The Stinger® Compact Remote ATM DSLAM Getting Started Guide
Preparing to Install the Unit
Checking modules and chassis
ventilation fan in the side of the outdoor enclosure. Heat is removed by air
circulation and dissipated through the enclosure.
Note
Check the power connector for the external ventilation fan to verify that it has
not become loose during shipping, and is not disturbed during installation.
The Stinger CR cooling unit is shown in Figure 2-11.
Figure 2-11. The Stinger CR cooling unit
Checking the power supply
The Stinger CR power supply is installed at the bottom of the CR chassis. Two power
supplies are available. One a190Vdc and -190Vdc from the central office over
multiple pairs of copper telecommunications facilities. The other accepts -48Vdc over
a single pair of 18 AWG wires that are routed into the cabinet separately from the
copper telecommunications facilities.
The ±190Vdc power supply
The Stinger CR ±190Vdc power supply a190Vdc and -190Vdc from the
central office over multiple pairs of copper telecommunications facilities. This is
converted within the power supply into the -48Vdc required to power the Stinger
CR. The Stinger CR ±190Vdc power supply is shown in Figure 2-12.
Figure 2-12. The Stinger CR ±190Vdc power supply
COMPACT REMOTE
COOLING UNIT STATUS
INTERNAL
EXTERNAL
BLINKING GREEN: INITIALIZING, GREEN: ACTIVE, RED: FAULT
Locking
screw
Status lights
External ventilation fan
power connector
COMPACT REMOTE POWER SUPPLY
V.CHECK
-48V
0V
STATUS
POWER INPUTS
-190V
+190V
Locking
screw
Power input plug
Status light
-48Vdc
test points