SM ALFOplus2 - Ethernet Electrical Interface Characteristics

MN.00356.E - 003 31
Fig.14 - ALFOplus2 blocks diagram
6.2.1 Ethernet electrical interface characteristics
RJ45 interfaces have lightining protection.
- Gigabit electrical Ethernet connector6 LAN3 RJ45 10/100/1000BaseT
LAN4 RJ45 10/100/1000BaseT
- Ethernet cable category CAT5e/CAT6
- Ethernet cable max length 100m
- Power over Ethernet 7 IEEE 802.3af PoE
- Ethernet latency see Tab.5
Tab.5 - Latency
One way delay (msec) Physical modes (64 bytes)
Channel size (MHz) 4QAM 16QAM 32QAM 64QAM 128QAM 256QAM 512QAM 1K QAM 2K QAM 4K QAM
14 1.023 0.776 0.680 0.641 0.608 0.614 0.603 0.577 0.575 0.567
20 0.747 0.570 0.528 0.487 0.472 0.451 0.437 0.438 0.437 0.433
28 0.507 0.382 0.348 0.329 0.326 0.323 0.310 0.309 0.299 0.297
30 0.493 0.407 0.352 0.338 0.322 0.310 0.307 0.299 0.302 0.295
40 0.388 0.292 0.263 0.265 0.247 0.240 0.238 0.233 0.238 0.233
50 0.416 0.344 0.336 0.318 0.309 0.306 0.306 0.299 0.299 0.297
Frame Processing & Modem
Eth. Switch
(Packet Process)
LAN4
LAN3
Power
µP
POE
Main DC/DC,
Aux DC/DC
Radio1
Radio2
HC
I/Q
IF
Framer
Split/combine
TXmod
RXdem
MD-Ch1
RF-unit1
TX/RX
channel1
RF-unit2
TX/RX
channel2
HC
I/Q
IF
Framer
Split/combine
TXmod
RXdem
MD-Ch2
Ant.
module
QoS
Frag
QoS
Frag
OL1
OL2
ProteconProtecon
Cntr Ch
data, prot. protocol
ACM/ATPC
To/From other ODU
POE
LAN2
LAN1