PoE Budget Calculations
M
Mike Eastman
When setting up PoE specs for a PD device you can only choose a PoE standard as the wattage consumption for that device. Example, a 6.5W IP camera is stuck being rated as 15.4W vice the actual 6.5W. The PSE budget ends up being consumed prematurely and is not accurate. There should be an option to enter the actual power consumption of a PD device for more accurate budgeting calculations.
Bradley Earnest
@Monkey Mart, Regardless of the wattages drawn, a 15.4w poe product is allotted in the switch on many different brands. hence, the "spare" watts are inaccessible.
Bradley Earnest
good
m
magnus
15.4w poe is allocated in the switch on lots of switchbrands for a 15.4w poe product, regardles of wattages drawn. so you cant use the "spare" watts.
C
Chris Merklin
As far as I know, the wattage entered between voltage and BTU in the specs is the PD's wattage used in PoE calculations.
The drop-down list in the PoE Specifications section is for selecting the minimum PoE class the device can support. For example, an outdoor IP PTZ camera can draw up to some maximum wattage with heater and IR illumination, requiring PoE++, but it can also function on a minimum of PoE+ without the heater and possibly just plain PoE with IR off. Some APs have similar tiers of feature support based on which level of PoE is supplied.
The trouble I find is that some PoE powered switches or APs have a PoE passthrough that can't be properly accounted for in D-Tools since it's actually a PSE and PD at the same time. Switches or APs may take in PoE+ or PoE++ to operate, but then output PoE or PoE+ on a single port.