DPtech LSW6600 Ethernet Switch Installation Manual V1.3
Copyright © Hangzhou DPtech Technologies Co. Ltd.
1-14
Figure 1-11
Diagram for Ethernet cable
Because of different usage, Ethernet cable can be classified as standard
cable (straight cable) and cross cable:
Standard cable: also is called straight cable. The sequences of the twisted
pairs crimped in the RJ45 connectors at both ends are the same. It connects
a terminal device (PC or router) to a HUB or LAN Switch. We provide you the
standard cable along with the device.
Crossover cable: the sequences of the twisted pairs crimped in the RJ-45
connectors at both ends are different. It connects a terminal device (PC or
router) to another terminal device (PC or router). You make crossover cables
by yourself.
1.4.3
SFP port
1.4.3.1
Attributes of Ethernet optical port
Table 1-6
Gigabit Ethernet optical port
Properties
Description
Connector type
SFP/LC
Interface
standard
802.3 802.3u and 802.3ab
Transmi
t power
Type
Short
haul
(850nm)
Optical
interface
module
Long
haul
(1310n
m)
Optical
interface
module
Long haul
(1310nm)
Optical
interface
module
Long haul
(1550nm)
Optical
interface
module
Extra-long
distance
(1550nm)
Optical
interface
module
Min
-
9.5dBm -9dBm
-
2dBm
-
4dBm
-
2dBm
Max
-
3dBm
-
3dBm
3dBm
1dBm
3dBm
Receiver
sensitivity
-
18dBm
-
20dBm
-
23dBm
-
20dBm
-
23dBm
Central
wavelength
850nm
1310nm
1310nm
1550nm
1550nm