Analog Devices DC2911A, Демонстрационное руководство

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4
DEMO MANUAL DC2911A
Rev. 0
Table 1. Single-Signature Classification, Power Levels and Jumper Selection
PD REQUESTED CLASS
PD REQUESTED POWER (AT THE PD INPUT)
R
CLASS
JUMPERS IEEE 802.3 LTPoE++
0 13W JP1 JP2
1 3.84W JP3 JP4
2 6.49W JP5 JP6
3 13W JP7 JP8
4 25.5W JP9 JP10
5 40W 38.7W JP11 JP12
6 51W 52.7W JP13 JP14
7 62W 70W JP15 JP16
8 71.3W 90W JP17 JP18
Table 2. T2P Response vs PSE Type
PSE TYPE T2P RESPONSE
1 (PoE, 13W) Logic High
2 (PoE+, 25.5W) Logic Low
3 (PoE++, 51W) 50% Logic Low*
4 (PoE++, 71.3W) 25% Logic Low*
LTPoE++, 90W 75% Logic Low*
* T2P Frequency is 840Hz typical for Type 3, Type 4 and LTPoE++ PSEs
Figure 5. Setup Diagram for DC2911A with a Resistive or an Active Load. Do Not Capacitively Load LAB_TEST_VOUT–
QUICK START PROCEDURE
RESISTIVE OR
ACTIVE LOAD
CAT5e
OR CAT6 CABLE
RJ45 RJ45
IEEE802.3bt
PSE
DC2911A F05
USE LAB_TEST_BOUT–
RESISTIVE OR
ACTIVE LOAD