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Item

Description

Overloa
d power

0 dBm

-3.0
dBm

-9.0
dBm

Extincti
on ratio

9.0 dB

6.0 dB

8.5 dB

9.0 dB

8.0 dB

Connect
or type

Fiber
type

Multi-
mode

Single-mode

NOTE

The ESFP optical module (GE) is applicable to only the 1000M SFP optical interfaces or 100M/1000M
SFP optical interfaces.

6.4 ESFP CWDM-SFP Optical Module

This section describes the attributes of an ESFP CWDM-SFP optical module.

Table 6-4

ESFP CWDM-SFP optical module attributes

Item

Description

Transmi
ssion
distance

80 km

Center
wavelen
gth

1471
nm

1491
nm

1511
nm

1531
nm

1551
nm

1571
nm

1591
nm

1611
nm

Transmi
tting
power

0 dBm to 5.0 dBm

Receiver
sensitivi
ty

-28.0 dBm

Overloa
d power

-9.0 dBm

Extincti
on ratio

8.5 dB

Connect
or type

Fiber
type

Single-mode

6 List of Optical Modules

Quidway S3300 Series Ethernet Switches

Hardware Description

6-4

Huawei Proprietary and Confidential

Issue 01 (2011-01-30)

Содержание Quidway S3300 Series

Страница 1: ...Quidway S3300 Series Ethernet Switches V100R005C01 Hardware Description Issue 01 Date 2011 01 30 HUAWEI TECHNOLOGIES CO LTD ...

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Страница 3: ...be within the purchase scope or the usage scope Unless otherwise specified in the contract all statements information and recommendations in this document are provided AS IS without warranties guarantees or representations of any kind either express or implied The information in this document is subject to change without notice Every effort has been made in the preparation of this document to ensu...

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Страница 5: ... that may be found in this document are defined as follows Symbol Description DANGER Indicates a hazard with a high level of risk which if not avoided will result in death or serious injury WARNING Indicates a hazard with a medium or low level of risk which if not avoided could result in minor or moderate injury CAUTION Indicates a potentially hazardous situation which if not avoided could result ...

Страница 6: ...ment issue contains all updates made in previous issues Changes in Issue 01 2011 01 30 Initial commercial release About This Document Quidway S3300 Series Ethernet Switches Hardware Description iv Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd Issue 01 2011 01 30 ...

Страница 7: ... Working Mode of Non PoE AC Power Supply Units 2 4 2 2 3 Working Mode of PoE AC Power Supply Units 2 4 2 3 AC PoE Power Supply Units 2 5 2 3 1 Function Overview 2 5 2 3 2 Panel 2 5 2 3 3 Technical Specifications 2 6 3 Heat Dissipation System 3 1 3 1 Heat Dissipation Mode 3 2 3 2 Fan Module 3 3 4 Cables 4 1 4 1 DC Power Cables 4 2 4 2 AC Power Cables 4 3 4 3 Ground Cables 4 5 4 4 Console Cables 4 6...

Страница 8: ...les 6 1 6 1 SFP Optical Module FE Attributes 6 2 6 2 ESFP Optical Module FE Attributes 6 2 6 3 ESFP Optical Module GE Attributes 6 3 6 4 ESFP CWDM SFP Optical Module 6 4 Contents Quidway S3300 Series Ethernet Switches Hardware Description vi Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd Issue 01 2011 01 30 ...

Страница 9: ...igure 4 3 Appearance of an AC power cable 4 4 Figure 4 4 Appearance of a ground cable 4 5 Figure 4 5 Structure of a console cable 4 6 Figure 4 6 Appearance of a network cable 4 8 Figure 4 7 Structure of a network cable 4 8 Figure 4 8 Single mode fiber with LC PC connectors 4 12 Figure 4 9 Single mode fiber with SC PC connectors 4 12 Figure 4 10 Multimode fiber with LC PC connectors 4 13 Figure 4 1...

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Страница 11: ... 4 7 Pin assignments of a crossover cable 4 9 Table 4 8 Specifications of a network cable 4 10 Table 4 9 Optical fiber classification 4 11 Table 4 10 Pin assignments of an optical fiber 4 13 Table 4 11 Fiber selection criterion 4 13 Table 4 12 Common optical connectors 4 14 Table 4 13 Specifications of a stack cable 4 15 Table 5 1 Description of S3328TP SI indicators 5 2 Table 5 2 Description of S...

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Страница 13: ...ules of the S3300 1 3 Device Structure This section describes the structure of the S3300 1 4 ESD Jack This section describes the functions of the ESD jack on the S3300 1 5 System Configuration 1 6 Physical Specifications Quidway S3300 Series Ethernet Switches Hardware Description 1 Overview of the S3300 Issue 01 2011 01 30 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 1 ...

Страница 14: ...class security and can be used to build high reliability ring topologies 1 1 2 Product Characteristics Energy Saving Design The S3300 saves energy in the following ways l Some models adopt natural heat dissipation so fans are not required NOTE Currently the S3328TP SI EI adopts natural heat dissipation l The interface chip switches to the power saving mode when an interface is idle which means tha...

Страница 15: ...to control power supply based on time range which effectively manages network devices reduces power consumption and lowers the OPEX 1 2 Device Models and Naming Rules This section describes device models and naming rules of the S3300 Device Models To meet diverse customer requirements the S3300 provides a variety of models Table 1 1 lists these device models You can select a device model as requir...

Страница 16: ...thernet optical interfaces and two GE SFP interfaces S3328TP PWR EI 28 There are twenty four 10 100BASE T Ethernet interfaces two 100 1000BASE X Ethernet optical interfaces and two GE combo interfaces 10 100 1000BASE T 100 1000BASE X S3352P PWR EI 52 There are twenty four 10 100BASE T Ethernet interfaces twenty four 100BASE X Ethernet interfaces two 100 1000BASE X Ethernet optical interfaces and t...

Страница 17: ... interfaces on an S3300 can be 28 or 52 depending on the device model E Uplink interface type l P A device has optical interfaces l TP A device has combo interfaces supporting optical and electrical interfaces F The S3300 supports Power over Ethernet PoE NOTE If this letter is not displayed PoE is not supported Quidway S3300 Series Ethernet Switches Hardware Description 1 Overview of the S3300 Iss...

Страница 18: ...ower supply unit fan and switch control unit SCU The width of an S3300 complies with industry standards and the S3300 can be installed in an IEC297 cabinet or an ETSI cabinet NOTE l The dimensions of S3328TP EI MCI S3328TP SI EI S3328TP EI 24S or S3352P SI EI are 442 0 mm x 220 0 mm x 43 6 mm width x depth x height l The dimensions of S3352P EI 24S S3352P EI 48S S3328TP PWR EI or S3352P PWR EI are...

Страница 19: ... 2 4 9 5 10 12 13 1 Ground screw 2 AC jack 3 DC jack 4 Switch 5 Twenty four 10 100BASE T Ethernet interfaces 6 Twenty four 100BASE X Ethernet interfaces 7 Forty eight 100BASE X Ethernet interfaces 8 Forty eight 10 100BASE T Ethernet interfaces Quidway S3300 Series Ethernet Switches Hardware Description 1 Overview of the S3300 Issue 01 2011 01 30 Huawei Proprietary and Confidential Copyright Huawei...

Страница 20: ...lectrical interface by commands Table 1 3 shows the rear views of S3300 Table 1 3 S3300 rear views Model Image S3328TP SI EI S3328TP EI 24S S3328TP EI MC S3352P EI 24S AC S3352P EI 48S AC 4 3 1 S3352P EI 24S DC S3352P EI 48S DC 3 2 4 S3352P EI AC 4 3 1 S3352P EI DC 4 2 3 S3328TP PWR EI S3352TP PWR EI 7 6 5 4 1 Overview of the S3300 Quidway S3300 Series Ethernet Switches Hardware Description 1 8 Hu...

Страница 21: ... ESD jack on the chassis as shown in Figure 1 2 Figure 1 2 ESD jack 1 5 System Configuration Table 1 4 System configuration Item Parameter Processor S3328 266 MHz S3352 200 MHz Switching capacity l S3328 12 8 Gbit s l S3352 17 6 Gbit s Packet forwarding capacity l S3328 9 6 Mpps l S3352 13 1 Mpps DDR memory 128 MB Flash Memory 16 MB Quidway S3300 Series Ethernet Switches Hardware Description 1 Ove...

Страница 22: ...mm x 420 0 mm x 43 6 mm Maximum power full configuration l S3328TP EI MC 20 W l S3328TP SI EI 20 W l S3328TP EI 24S 52 W l S3352P SI EI 38 W l S3352P EI 24S 66 W l S3352P EI 48S 92 W l S3328TP PWR EI 875 W Dissipated power 135 W PoE 740 W l S3352P PWR EI 880 W Dissipated power 140 W PoE 740 W Weight Full configura tion 6 5 kg Empty chassis 5 kg DC input voltage Rated voltage 48V DC to 60V DC Maxim...

Страница 23: ...EI 0 C to 50 C Storage temperatu re 40 C to 70 C Relative humidity 10 RH to 90 RH Altitude S3300SI S3300EI 0 m to 2000 m Quidway S3300 Series Ethernet Switches Hardware Description 1 Overview of the S3300 Issue 01 2011 01 30 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 1 11 ...

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Страница 25: ...s power supply units 2 1 Power Supply Configuration This section describes the power supply configuration on the S3300 2 2 Power Supply Unit Working Mode This section describes the working mode of S3300 power supply units 2 3 AC PoE Power Supply Units This section describes the functions appearance switch indicators and technical specifications of the S3300 AC PoE power supply unit Quidway S3300 S...

Страница 26: ...er supply unit slots Each slot accommodates a 500 W or 250 W power supply unit The power supply configurations are shown in the following table Power Supply Unit PoE Power Maximum Number of Interfaces 250 W current sharing power supply 123 2 W l 802 3af 8 l 802 3at 4 500 W current sharing power supply 369 6 W l 802 3af 24 l 802 3at 12 250 W current sharing power supply 250 W current sharing power ...

Страница 27: ...ated When two power supply units are used they work in redundancy backup mode to provide power for the device and in load balancing mode to provide power for PDs 2 2 Power Supply Unit Working Mode This section describes the working mode of S3300 power supply units 2 2 1 Working Mode of DC Power Supply Units 2 2 2 Working Mode of Non PoE AC Power Supply Units 2 2 3 Working Mode of PoE AC Power Supp...

Страница 28: ...rovides power for the entire device 2 2 3 Working Mode of PoE AC Power Supply Units The working mode of S3300 PoE AC power supply units is shown in Figure 2 3 Figure 2 3 Working mode of PoE AC power supply units PWR1 L N Motherboard GND 12V PGND PWR2 L N PGND 53V RTN L Live line N Neutral wire PGND PGND cable GND Grounding RTN Ground cable After the PoE power is transmitted to the PWR module the P...

Страница 29: ...0 is able to remotely provide power for the devices of different vendors IEEE 802 3af supports a maximum of 15 4 W power and IEEE 802 3at supports a maximum of 30 W power The PoE function transmits power together with data to terminals over cables or transmits power without data over idle lines The S3300 can transmit power together with data at a rate of up to 1000 Mbit s 2 3 2 Panel The S3300 sup...

Страница 30: ... l Overvoltage Off The power cable is loose or no input AC power is provided OUTPUT Green The AC output power is within range Red The output power is out of range for example l Abnormal power fan operation l Output overvoltage l Output overcurrent l Short circuit l Overtemperature Off The power cable is loose or no input AC power is provided 2 3 3 Technical Specifications 2 Power Supply Unit Quidw...

Страница 31: ...oltage 100 V AC to 240V AC 50 Hz or 60 Hz Maximum input voltage 90 V AC to 264 V AC 47 Hz to 63 Hz Maximum input current 4 A to 2 A 7 A to 3 5 A Maximum output current l 12 V 10 A l 53 5 V 2 5 A l 12 V 10 A l 53 5 V 7 11 A Maximum output power PoE 130 W Total 250 W PoE 380 W Total 500 W Quidway S3300 Series Ethernet Switches Hardware Description 2 Power Supply Unit Issue 01 2011 01 30 Huawei Propr...

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Страница 33: ...tion describes the heat dissipation modes of the S3300 3 2 Fan Module This section describes the appearance and technical specifications of the S3300 fan module Quidway S3300 Series Ethernet Switches Hardware Description 3 Heat Dissipation System Issue 01 2011 01 30 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 3 1 ...

Страница 34: ...del Natural heat dissipation l S3328TP SI l S3328TP EI l S3328TP EI MC Intelligent heat dissipation l S3352P SI l S3352P EI Forcible heat dissipation l S3352P EI 24S l S3352P EI 48S l S3328TP EI 24S l S3328TP PWR EI l S3352P PWR EI NOTE The fans of S3352P EI 24S S3352P EI 24S and S3328TP EI 24S support Pulse Width Modulation PWM speed adjustment The fans can work in the intelligent mode or forcibl...

Страница 35: ...his section describes the appearance and technical specifications of the S3300 fan module Appearance The S3300 fan module consists of two fans The fans can be replaced when the device is operating Figure 3 1 shows the appearance of the fan module Quidway S3300 Series Ethernet Switches Hardware Description 3 Heat Dissipation System Issue 01 2011 01 30 Huawei Proprietary and Confidential Copyright H...

Страница 36: ...ecifications Table 3 3 describes the technical specifications of the S3300 fan module Table 3 3 Fan module technical specifications Item Specification Dimensions width x depth x height 103 0 mm x 99 2 mm x 39 6 mm Weight 230 g to 270 g Maximum power consumption 12 W Maximum wind pressure 375 Pa Maximum wind rate 40 CFM Maximum noise 60 dB 3 Heat Dissipation System Quidway S3300 Series Ethernet Swi...

Страница 37: ...ation Operating voltage 12 V DC Quidway S3300 Series Ethernet Switches Hardware Description 3 Heat Dissipation System Issue 01 2011 01 30 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 3 5 ...

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Страница 39: ...twork Cables A network cable subtends devices enables a device to communication with other network devices and allows users to locally or remotely maintain the device 4 6 Optical Fibers An optical fiber connects the optical interface of a device to an upstream device or optical network terminal 4 7 Stack Cables This section describes the structure and technical specifications of a stack cable Quid...

Страница 40: ...TN is connected to the RTN end of the DC power supply A blue 48 V DC power cable is connected to the NEG end of the DC power supply Appearance and Structure The black 48 V DC power return wire and the blue 48 V DC power cable are shown in Figure 4 1 and Figure 4 2 Figure 4 1 48 V DC power return wire 4 Cables Quidway S3300 Series Ethernet Switches Hardware Description 4 2 Huawei Proprietary and Co...

Страница 41: ...Cable type Power cable Color Blue for 48 V DC power cable and black for 48 V DC power return wire Connector 1 OT Connector 2 Cord end terminal Impedance 4 95 Ω km Conductor cross sectional area 1 2 mm2 4 2 AC Power Cables An AC power cable transmits AC power to the switch Quidway S3300 Series Ethernet Switches Hardware Description 4 Cables Issue 01 2011 01 30 Huawei Proprietary and Confidential Co...

Страница 42: ...ons The following are the specifications of the international standard AC power cable Table 4 2 lists the specifications of an AC power cable Table 4 2 Specifications of an AC power cable Item Description Cable type External power cable Function 250 V AC 10 A complying with international standard Connector 1 PI straight male Connector 2 C13 straight female 4 Cables Quidway S3300 Series Ethernet Sw...

Страница 43: ...terference Applications A ground cable connects the chassis to the ground Appearance Figure 4 4 shows the appearance of a ground cable Figure 4 4 Appearance of a ground cable Specifications Table 4 3 lists the specifications of a ground cable Table 4 3 Specifications of a ground cable Item Description Cable type Power cable Quidway S3300 Series Ethernet Switches Hardware Description 4 Cables Issue...

Страница 44: ...iguration data A shielded cable or an unshielded cable can be used according to the onsite situation A console cable connects the S3300 and terminal as follows l The 8 pin RJ45 connector is inserted into the S3300 console port l The DB9 connector is inserted into the terminal serial port Appearance and Structure Figure 4 5 shows the structure of a console cable Figure 4 5 Structure of a console ca...

Страница 45: ...nnector X2 network interface connector RJ45 8 pin 8 bit Cable type Twisted pair Color White Diameter 0 38 mm Gauge 28 AWG cross sectional area 0 08 mm2 Pin 8 pin Fireproof level CM 4 5 Network Cables A network cable subtends devices enables a device to communication with other network devices and allows users to locally or remotely maintain the device Applications A network cable connects a mainte...

Страница 46: ...erence pinouts Appearance and Structure NOTE l Generally a network cable is a standard unshielded network cable that uses RJ45 connectors l The appearances of the straight through cable and the crossover cable are the same Figure 4 6 shows the appearance of a network cable Figure 4 6 Appearance of a network cable Figure 4 7 shows the appearance of a network cable Figure 4 7 Structure of a network ...

Страница 47: ... a crossover cable Table 4 7 Pin assignments of a crossover cable X1 Pin Tip Color X2 Pin 1 White and orange 3 2 Orange 6 3 White and Green 1 4 Blue 4 5 White and Blue 5 6 Green 2 7 White and brown 7 8 Brown 8 NOTE To achieve the optimum electrical transmission performance ensure that the wires connected to pins 1 and 2 and to pins 3 and 6 are twisted pairs Quidway S3300 Series Ethernet Switches H...

Страница 48: ...el CM Length l Straight through cable 5 m 10 m 20 m and 30 m l Crossover cable 5 m and 30 m 4 6 Optical Fibers An optical fiber connects the optical interface of a device to an upstream device or optical network terminal Applications An optical fiber carries optical signals and transmits them over short distance An optical fiber connects the following l Optical interface on a board l Optical distr...

Страница 49: ...gle mode optical fiber is yellow and the multi mode optical fiber is orange CAUTION When connecting or removing the LC PC optical connector align the connector with the optical interface and do not rotate the fiber Pay attention to the following points l Align the head of the fiber jumper with the optical interface and insert the optical fiber into the interface gently l To remove the fiber press ...

Страница 50: ...9 Single mode fiber with SC PC connectors Figure 4 10 shows the appearance of a multimode fiber 4 Cables Quidway S3300 Series Ethernet Switches Hardware Description 4 12 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd Issue 01 2011 01 30 ...

Страница 51: ...Optical interface Rx terminal Optical interface Rx terminal Optical interface Tx terminal Fiber Selection Criterion Table 4 11 lists the criteria for selecting optical fibers Table 4 12 lists common optical connectors Table 4 11 Fiber selection criterion Parameter Criterion Length Survey result Quidway S3300 Series Ethernet Switches Hardware Description 4 Cables Issue 01 2011 01 30 Huawei Propriet...

Страница 52: ...nd MTRJ PC l Column ST PC and FC PC Table 4 12 Common optical connectors SC PC optical connector LC PC optical connector FC PC optical connector MTRJ PC optical connector ST PC optical connector 4 7 Stack Cables This section describes the structure and technical specifications of a stack cable Applications A stack cable of the S3300 is the PCI E cable which interconnects the specified stack interf...

Страница 53: ...ications of a stack cable Item Description Cable type SFP high speed transmission cable indoor SFP 20 male SFP 20 male SFP CC2P0 32 black 1 5 m Connector X1 X2 SFP 20 pin male Color Black Pin Two pairs Length 1 5 m Bend radius 75 mm Quidway S3300 Series Ethernet Switches Hardware Description 4 Cables Issue 01 2011 01 30 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 4 15 ...

Страница 54: ......

Страница 55: ...dicators on the Front Panel This section describes the indicators on the S3300 front panel 5 2 Fan Indicators This section describes the fan indicators 5 3 Power Indicators This section describes the power indicators Quidway S3300 Series Ethernet Switches Hardware Description 5 List of Indicators Issue 01 2011 01 30 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 5 1 ...

Страница 56: ...em status indicator RUN Off The system is not operating Green The system is not operating properly or is starting Blinking green The system is operating properly 3 Port indicator LNK ACT Off The interface is not connected or has been shut down Green The interface is connected Blinking green The interface is sending or receiving data Indicators of a PoE S3300 S3352P PWR EI is a PoE switch Figure 5 ...

Страница 57: ...witched off l The card power and PoE power are abnormal Orange If a single power supply unit is installed the PoE power is out of range If two power supply units are installed the card power or PoE power is out of range 2 Power indicator PWR2 Off The power supply units are not present or the power supply is abnormal when a single power supply unit is used Green The power supply is normal Quidway S...

Страница 58: ...icator SYS Off The system is not operating Green The system is not operating properly or is starting Orange The system is performing self check during startup Blinking green The system is operating properly Red After registering the system does not operate properly or a power alarm fan alarm or temperature alarm is generated 4 Mode indicator Off The service interface indicator is in the default mo...

Страница 59: ...the mode switching button once the mode indicator turns green and the related interface indicator enters the speed state When you press the mode switching button for a second time the mode indicator turns orange and the related interface indicator represents the PoE power status When you press the mode switching button for a third time the mode indicator turns red and the related interface indicat...

Страница 60: ... in the off state Green The device is a not a command switch l If the indicator of an interface is always on the number of this interface is the stack ID of the device l If the first nine interface indicators of the device are always on the stack ID of the device is 0 Blinking green The device is a command switch l If the indicator of an interface blinks the number of this interface is the stack I...

Страница 61: ...ave a power supply unit see section 5 1 Indicators on the Front Panel for the PWR indicator description AC PoE Power Indicators Table 5 5 describes the AC PoE power indicators Table 5 5 Description of the AC PoE power indicators Name Status Description INPUT Green The input power is within range Red The input power is out of range for example l Undervoltage l Overvoltage Off The power cable is loo...

Страница 62: ...put overvoltage l Output overcurrent l Short circuit l Overtemperature Off The power cable is loose or no input AC power is provided 5 List of Indicators Quidway S3300 Series Ethernet Switches Hardware Description 5 8 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd Issue 01 2011 01 30 ...

Страница 63: ...es This section describes the attributes of an ESFP optical module FE 6 3 ESFP Optical Module GE Attributes This section describes the attributes of an ESFP optical module GE 6 4 ESFP CWDM SFP Optical Module This section describes the attributes of an ESFP CWDM SFP optical module Quidway S3300 Series Ethernet Switches Hardware Description 6 List of Optical Modules Issue 01 2011 01 30 Huawei Propri...

Страница 64: ...tical interfaces 6 2 ESFP Optical Module FE Attributes This section describes the attributes of an ESFP optical module FE Table 6 2 ESFP optical module FE attributes Item Description Transmission distance 15 km 15 km single mode bidirectional fiber 15 km single mode bidirectional fiber 40 km 80 km Center wavelength 1310 nm Tx 1310 nm Rx 1550 nm Tx 1550 nm Rx 1310 nm 1310 nm 1550 nm Transmitting po...

Страница 65: ...tributes Item Description Transmi ssion distance 0 5 km 10 km 10 km single mode bidirect ional fiber 10 km single mode bidirect ional fiber 40 km 40 km 80 km 100 km Center wavelen gth 850 nm 1310 nm Tx 1310 nm Rx 1490 nm Tx 1490 nm Rx 1310 nm 1550 nm 1310 nm 1550 nm 1550 nm Transmi tting power 9 5 dBm to 2 5 dBm 9 0 dBm to 3 0 dBm 9 0 dBm to 3 0 dBm 9 0 dBm to 3 0 dBm 5 0 dBm to 0 dBm 5 0 dBm to 0...

Страница 66: ...ection describes the attributes of an ESFP CWDM SFP optical module Table 6 4 ESFP CWDM SFP optical module attributes Item Description Transmi ssion distance 80 km Center wavelen gth 1471 nm 1491 nm 1511 nm 1531 nm 1551 nm 1571 nm 1591 nm 1611 nm Transmi tting power 0 dBm to 5 0 dBm Receiver sensitivi ty 28 0 dBm Overloa d power 9 0 dBm Extincti on ratio 8 5 dB Connect or type LC Fiber type Single ...

Страница 67: ...P optical interfaces or 1000M SFP optical interfaces or 100M 1000M SFP optical interfaces Quidway S3300 Series Ethernet Switches Hardware Description 6 List of Optical Modules Issue 01 2011 01 30 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 6 5 ...

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