Appendix a, A.1 mdi settings, A.2 power device classification values – PLANET HPOE-1200G User Manual
Page 55: Ettings, Ower, Evice, Lassification values
User’s Manual of HPOE-1200G / HPOE2400G
55
APPENDIX A
A.1 MDI Settings
The Medium-Dependant Interface (MDI or RJ-45) serves as the data/power interface between Ethernet elements. As such,
it has two optional connection methods, to carry the power. Named Alternative A & B. Table 1 details the two power feeding
alternatives.
Pin
Alternative A
Alternative B
1
Vport Negative
2
Vport Negative
3
Vport Positive
4
Vport Positive
5
Vport Positive
6
Vport Positive
7
Vport Negative
8
Vport Negative
Table -1 Alternative Table
Delivering power through an RJ-45 connector’s center tap (“Phantom Feeding”) guarantees that bi-directional data flow is
maintained, regardless of a module’s power status.
A.2 Power Device Classification values
Class PD Current – Classification Period
[mA]
PD Power – Operation Period
[W]
Note
0
0 – 4
0.44 – 12.95
Default
1
9 – 12
0.44 – 3.84
Optional
2
17 -20
3.84 – 6.49
Optional
3
26 – 30
6.49 – 12.95
Optional
4
36 - 44
12.95 - 25
Optional