Cisco Aironet 1570 Series Installation Manual page 114

Powering the Access Point
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The following tables show the maximum radio transmission paths for various versions of the AP
depending on the kind of input power, cable modem status, and SFP port status.
The AP supports all modes described in the following tables, in ambient temperatures of -40°C to +45°C
Note
in all supported orientations, with a solar loading of 753 Watts/m2. For details on the operating
temperature ranges of the access point, see
page
Table 4-1
Maximum 5G TX Paths
4
4
Table 4-2
Maximum 2.4G TX
Maximum 5G TX Paths Paths
4 4
4 0 (Disabled)
2 2
0 (Disabled) 4
4 4
4 0 (Disabled)
Cisco Aironet 1570 Series Outdoor Access Point Hardware Installation Guide
4-18
If no SFP device is detected at startup and the cable modem is connected, then the cable modem
–
will be used as the uplink. The SFP will not be disabled. However, if an SFP device is plugged
in later, the AP will require a reboot to choose the SFP port as the uplink.
You cannot disable any Ethernet ports.
The power available on the PoE output port can be 802.3at, 802.3af, or disabled depending on other
configuration options.
PoE-Output is disabled when PoE-Input voltage is present.
If the AP is powered by other means and then switches to UPOE, the AP will automatically
reconfigure itself as required.
The access point has protection mechanisms to prevent overheating by reducing certain
functionalities, if internal temperatures exceed factory-defined limits. Protection measures include
reducing the number of active transmit paths on one or more radios. The number of active transmit
paths will return to the user's selected configuration when the overheating condition subsides.
However, if the protection measures do not sufficiently reduce the temperature, then the AP will
ultimately power down, with the LEDs flashing yellow at flashes per second. When the overheating
condition subsides, the AP will power up automatically.
A-3.
Radio Transmission Paths on AP1572IC powered by PoC or DC
Maximum 2.4G TX Paths Cable Modem Active?
4
4
Radio Transmission Paths on AP1572EC powered by PoC or DC
Cable Modem Active?
Yes
Yes
Yes
Yes
No
No
Chapter 4
Access Point Operating Temperature Specifications,
Yes
No
SFP Device Inserted?
No
No
No
No
Yes
Yes
Installing Other Components
SFP Device Inserted?
No
Yes
802.3 PoE Output Mode
AF
AT
AT
AT
AF
AT
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