Chapter 4: Web-Based Management
126
GE-DS-242-PoE Managed Ethernet Switch User Manual
NOTE:
For GE-DS-242-PoE, the total PoE power reservation from Port-1~24 is
up to 380W.
PD
Classifications
A PD may be classified by the PSE based on the classification information
provided by the PD. The intent of PD classification is to provide information about
the maximum power required by the PD during operation. Class 0 is the default
for PDs. However, to improve power management at the PSE, the PD may opt to
provide a signature for Class 1 to 3.
The PD is classified based on power. The classification of the PD is the
maximum power that the PD will draw across all input voltages and operational
modes.
A PD shall return Class 0 to 3 in accordance with the maximum power draw as
specified by Table 4-3.
Table 4-13-1: Device class
Class
Usage
Range of maximum power used by the PD
0
Default
0.44 to 12.95 Watts
1
Optional
0.44 to 3.84 Watts
2
Optional
3.84 to 6.49 Watts
3
Optional
6.49 to 12.95 Watts
4
Not Allowed
Reserved for Future Use
NOTE:
Class 4 is defined but is reserved for future use. A Class 4 signature
cannot be provided by a compliant PD.
Содержание GE-DS-242-PoE
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