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參數(shù)資料
| 型號： | AG8000 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | Power-Over-Ethernet Module |
| 中文描述： | 供電以太網(wǎng)模塊 |
| 文件頁數(shù)： | 5/14頁 |
| 文件大小： | 221K |
| 代理商： | AG8000 |
V1.3 July 2006
Data Sheet
Ag8000
Power-Over-Ethernet Module
5. Functional Description
5.1. Inputs
The Ag8000 has two internal bridge rectifiers (see Figure 1: Block Diagram) connected to
the VA1-VA2
and the VB1-VB2
inputs. This allows the Ag8000 to be compatible with
equipment that use the different power options, see Figure 3: Typical System Diagram. It
is important that the PSE does not apply power to the VA and VB outputs at the same time
(Refer to IEEE802.3af for more information).
PSE
(48V)
Ag8000
DC
OUTPUT
VA1 VB1
VA2VB2
*
+/-
+/-
POWERED DEVICE
(PD)
POWER SOURCING
EQUIPMENT (PSE)
RX
TX
TX
RX
4
5
1
2
3
6
7
8
4
5
1
2
3
6
7
8
*
* The VA and VB inputs must not be used at the same time
*
+
-
*
Figure 3: Typical System Diagram
5.2. PD Signature
When the Ag8000 is connected to the Cat 5e cable, it will automatically present a Powered
Device (PD) signature to the Power Sourcing Equipment (PSE) or Midspan Equipment,
when requested. The equipment will then recognise that a powered device is connected to
that line and supply power.
5.3. Isolation
The Ag8000 series conforms to the IEEE 802.3af standard except for the 1500V isolation,
which must be done externally. This is usually achieved without additional components,
contact Silver Telecom for further details.
Silver Telecom 2006
5
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