DPtech DPX19000 Series Deep Service Switching Gateway
Installation Manual
Chapter 1 Product introudction
21
Central wavelength represents the wave band used for optical signal transmission. At present, there are
mainly three central wavelengths for common optical modules: 850nm, 1310nm, and 1550nm,
respectively representing three wavebands.
•
850nm wave band: 850nm wave band is mainly used for short-reach transmission.
•
1310nm and 1550nm wave band: the 1310 nm and 1550nm wave bands are mainly used for middle-and
long-reach transmission.
2. SFP module
(1)
Appearance
Figure1-19 SFP module appearance diagram
(2)
SFP GbE interface attributes
Table1-7 SFP GbE interface attributes
Attributes
Description
Connector type
SFP/LC
Interface standard
802.3 802.3u and 802.3ab
Transmit
power
Typ
e
Short
haul
multimode
(850nm)
Optical
interface
module
Medium haul
multimode
(1310nm)
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
-4dBm
Max
0dBm
-3dBm
5dBm
1dBm
2dBm
Receiving
sensitivity
-17dBm
-20dBm
-23dBm
-21dBm
-22dBm
Central
850nm
1310nm
1310nm
1550nm
1550nm
Summary of Contents for DPX19000 Series
Page 67: ...Chapter 6 Troubleshooting 1 ...