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39
Hardware Features
Supported Power Sources
Supported Power Sources
The CMAP supports the following power sources:
■
Power over Cable (POC): 40 to 90 VAC supplied through the RF coaxial cable (attached
to Connector B) that is connected to the cable modem termination system (CMTS)
backbone. POC is the primary and conventional source of power for the CMAP.
■
DC power: External 12 VDC. Use this only when configuring or testing the CMAP. Refer
to
“Step 2: Supply DC Power to the CMAP”
on page 10 for more information.
NOTE:
The CMAP does not provide PoE output when the CMAP is powered by 12 VDC.
Heaters
The CMAP includes two built-in heaters (one for the access point and one for the cable
modem) that permit operation at extremely low temperatures. They are typically on below
0° C (32° F).
The heaters are enabled by default. If preferred, the access point heater can be disabled
from the Web interface. The cable modem heater cannot be disabled.
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