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Twisted-Pair Cable and Pin Assignments

B-3

B

Crossover Wiring

If the twisted-pair cable is to join two ports and either both ports are labeled with an
“X” (indicating MDI-X) or neither port is labeled with an “X” (which indicates MDI), a
crossover must be implemented in the wiring. (When auto-negotiation is enabled for
any RJ-45 port on this switch, you can use either straight-through or crossover cable
to connect to any device type.)

You must connect all four wire pairs as shown in the following diagram to support
Gigabit Ethernet connections.

Figure B-3 Crossover Wiring

1000BASE-T Pin Assignments

All 1000BASE-T ports support automatic MDI/MDI-X operation, so you can use
straight-through cables for all network connections to PCs or servers, or to other
switches or hubs.

The table below shows the 1000BASE-T MDI and MDI-X port pinouts. These ports
require that all four pairs of wires be connected. Note that for 1000BASE-T
operation, all four pairs of wires are used for both transmit and receive.

Use 100-ohm Category 5, 5e or 6 unshielded twisted-pair (UTP) or shielded
twisted-pair (STP) cable for 1000BASE-T connections. Also be sure that the length
of any twisted-pair connection does not exceed 100 meters (328 feet).

Table B-2 1000BASE-T MDI and MDI-X Port Pinouts

Pin

MDI Signal Name

MDI-X Signal Name

1

Bi-directional Data Two Plus (BI_D2+)

Bi-directional Data One Plus (BI_D1+)

2

Bi-directional Data Two Minus (BI_D2-)

Bi-directional Data One Minus (BI_D1-)

3

Bi-directional Data One Plus (BI_D1+)

Bi-directional Data Two Plus (BI_D2+)

White/Orange Stripe

Orange

White/Green Stripe

1
2
3
4
5
6
7
8

1
2
3
4
5
6
7
8

EIA/TIA 568B RJ-45 Wiring Standard

10/100BASE-TX Crossover Cable

E

nd

A

E

nd B

Green

Blue

White/Blue Stripe

Brown

White/Brown Stripe

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Содержание 8124PL2

Страница 1: ...SMC8124PL2 TM TigerSwitch 10 100 1000 24 Port Managed Switch with PoE INSTALLATION GUIDE Installationsanleitung ...

Страница 2: ......

Страница 3: ...20 Mason Irvine CA 92618 Phone 949 679 8000 TigerSwitch 10 100 1000 Installation Guide From SMC s Tiger line of feature rich workgroup LAN solutions May 2007 Pub 150200061500A E052007 DT R01 ...

Страница 4: ...ted by implication or otherwise under any patent or patent rights of SMC SMC reserves the right to change specifications at any time without notice Copyright 2007 by SMC Networks Inc 20 Mason Irvine CA 92618 All rights reserved Printed in Taiwan Trademarks SMC is a registered trademark and EZ Switch TigerStack and TigerSwitch are trademarks of SMC Networks Inc Other product and company names are t...

Страница 5: ...become the property of SMC Replacement products may be either new or reconditioned Any replaced or repaired product carries either a 30 day limited warranty or the remainder of the initial warranty whichever is longer SMC is not responsible for any custom software or firmware configuration information or memory data of Customer contained in stored on or integrated with any products returned to SMC...

Страница 6: ...ON WITH THE SALE INSTALLATION MAINTENANCE USE PERFORMANCE FAILURE OR INTERRUPTION OF ITS PRODUCTS EVEN IF SMC OR ITS AUTHORIZED RESELLER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES SOME STATES DO NOT ALLOW THE EXCLUSION OF IMPLIED WARRANTIES OR THE LIMITATION OF INCIDENTAL OR CONSEQUENTIAL DAMAGES FOR CONSUMER PRODUCTS SO THE ABOVE LIMITATIONS AND EXCLUSIONS MAY NOT APPLY TO YOU THIS WARRA...

Страница 7: ...ot expressly approved by the party responsible for compliance could void your authority to operate the equipment You may use unshielded twisted pair UTP for RJ 45 connections Category 3 or better for 10 Mbps connections Category 5 or better for 100 Mbps connections Category 5 5e or 6 for 1000 Mbps connections For fiber optic connections you may use 50 125 or 62 5 125 micron multimode fiber or 9 12...

Страница 8: ...ge fluctuation and flicker in low voltage supply system according to EN 61000 3 3 1995 Immunity Product family standard according to EN 55024 1998 Electrostatic Discharge according to EN 61000 4 2 1995 Contact Discharge 4 kV Air Discharge 8 kV Radio frequency electromagnetic field according to EN 61000 4 3 1996 80 1000 MHz with 1 kHz AM 80 Modulation 3 V m Electrical fast transient burst according...

Страница 9: ...Safety Extra Low Voltage conditions according to IEC 60950 The conditions are only maintained if the equipment to which it is connected also operates under SELV conditions France and Peru only This unit cannot be powered from IT supplies If your supplies are of IT type this unit must be powered by 230 V 2P T via an isolation transformer ratio 1 1 with the secondary connection point labelled Neutra...

Страница 10: ...ique au niveau de cette prise L appareil fonctionne à une tension extrêmement basse de sécurité qui est conforme à la norme IEC 60950 Ces conditions ne sont maintenues que si l équipement auquel il est raccordé fonctionne dans les mêmes conditions France et Pérou uniquement Power Cord Set U S A and Canada The cord set must be UL approved and CSA certified The minimum specifications for the flexibl...

Страница 11: ... durch Herausziehen des Gerätenetzkabels aus der Netzsteckdose unterbrochen werden Der Betrieb dieses Geräts erfolgt unter den SELV Bedingungen Sicherheitskleinstspannung gemäß IEC 60950 Diese Bedingungen sind nur gegeben wenn auch die an das Gerät angeschlossenen Geräte unter SELV Bedingungen betrieben werden Cordon électrique Il doit être agréé dans le pays d utilisation Etats Unis et Canada Le ...

Страница 12: ...rectly at a transmit port when it is powered on Caution Wear an anti static wrist strap or take other suitable measures to prevent electrostatic discharge when handling this equipment Caution Do not plug a phone jack connector in the RJ 45 port This may damage this device Les raccordeurs ne sont pas utilisé pour le système téléphonique Caution Use only twisted pair cables with RJ 45 connectors tha...

Страница 13: ... hazardous nor ozone depleting materials in this product Documentation All printed documentation for this product uses biodegradable paper that originates from sustained and managed forests The inks used in the printing process are non toxic Purpose This guide details the hardware features of this switch including Its physical and performance related characteristics and how to install the switch A...

Страница 14: ...xiv ...

Страница 15: ...Chapter 2 Network Planning 2 1 Introduction to Switching 2 1 Application Examples 2 1 Collapsed Backbone 2 1 Network Aggregation Plan 2 2 Remote Connections with Fiber Cable 2 3 Making VLAN Connections 2 3 Application Notes 2 4 Chapter 3 Installing the Switch 3 1 Selecting a Site 3 1 Ethernet Cabling 3 1 Equipment Checklist 3 2 Package Contents 3 2 Optional Rack Mounting Equipment 3 2 Mounting 3 3...

Страница 16: ...ision Domain 4 6 Cable Labeling and Connection Records 4 6 Appendix A Troubleshooting A 1 Diagnosing Switch Indicators A 1 Power and Cooling Problems A 1 Installation A 1 In Band Access A 2 Appendix B Cables B 1 Twisted Pair Cable and Pin Assignments B 1 10BASE T 100BASE TX Pin Assignments B 1 Straight Through Wiring B 2 Crossover Wiring B 3 1000BASE T Pin Assignments B 3 Cable Testing for Existin...

Страница 17: ...xvii Contents Appendix D German Instructions D 1 Eine Site Auswählen Selecting a Site D 1 Montage Rack Mounting Instructions D 1 Rack Montage D 1 Appendix E Ordering Information E 1 Glossary Index ...

Страница 18: ...xviii Contents ...

Страница 19: ...gth 4 5 Table 4 3 Maximum 1000BASE LX Fiber Optic Cable Length 4 6 Table 4 4 Maximum 1000BASE ZX Fiber Optic Cable Length 4 6 Table 4 5 Maximum Fast Ethernet Cable Length 4 6 Table 4 6 Maximum Ethernet Cable Length 4 6 Table A 1 Troubleshooting Chart A 1 Table B 1 10 100BASE TX MDI and MDI X Port Pinouts B 2 Table B 2 1000BASE T MDI and MDI X Port Pinouts B 3 Table E 1 TigerSwitch 10 100 1000 Prod...

Страница 20: ...ections 3 2 Figure 3 2 Attaching the Brackets 3 3 Figure 3 3 Installing the Switch in a Rack 3 4 Figure 3 4 Attaching the Adhesive Feet 3 4 Figure 3 5 Inserting an SFP Transceiver into a Slot 3 5 Figure 3 6 Power Socket 3 6 Figure 3 7 Serial Port DB 9 DTE Pin Out 3 6 Figure 4 1 Making Twisted Pair Connections 4 2 Figure 4 2 Wiring Closet Connections 4 3 Figure 4 3 Making Connections to SFP Transce...

Страница 21: ...ains with IEEE 802 1Q compliant VLANs and empowers multimedia applications with multicast switching and CoS services Figure 1 1 Front Panel Figure 1 2 Rear Panel Switch Architecture This Gigabit Ethernet switch employs a wire speed non blocking switching fabric This permits simultaneous wire speed transport of multiple packets at low latency on all ports The switch also features full duplex capabi...

Страница 22: ...the standard 48 VDC voltage Network devices such as IP phones wireless access points and network cameras typically consume less than 10 W of power so they are ideal for Power over Ethernet applications Network Management Options The switch contains a comprehensive array of LEDs for at a glance monitoring of network and port status It also includes a management agent that allows you to configure or...

Страница 23: ...lay panel for key system and port indications that simplify installation and network troubleshooting The LEDs which are located on the front panel for easy viewing are shown below and described in the following tables Figure 1 3 Port and System LEDs The 1000BASE T standard does not support forced mode Auto negotiation must always be used to establish a connection over any 1000BASE T port or trunk ...

Страница 24: ...half or full duplex RJ 45 10 100 1000BASE T ports support auto MDI MDI X pinout selection Unshielded UTP cable supported on all RJ 45 ports Category 3 or better for 10 Mbps connections Category 5 or better for 100 Mbps connections and Category 5 5e 6 or better for 1000 Mbps connections IEEE 802 3 2005 Ethernet Fast Ethernet and Gigabit Ethernet compliance ensures compatibility with standards based...

Страница 25: ...f up to 48 Gbps Switching table with a total of 8K MAC address entries Provides store and forward switching for intra VLAN traffic Supports wire speed switching Management At a glance LEDs for easy troubleshooting Network management agent Manages switch or entire stack in band or out of band Supports console Telnet SSH SNMP v1 v2c RMON 4 groups and web based interface ...

Страница 26: ...About the TigerSwitch 10 100 1000 1 6 1 ...

Страница 27: ...removes this limitation A switch can be easily configured in any Ethernet Fast Ethernet or Gigabit Ethernet network to significantly boost bandwidth while using conventional cabling and network cards Application Examples The TigerSwitch 10 100 1000 is not only designed to segment your network but also to provide a wide range of options in setting up network connections Some typical applications ar...

Страница 28: ...domains a Gigabit switch can collapse a complex network down into a single efficient bridged node increasing overall bandwidth and throughput In the figure below the 10 100 1000BASE T ports are providing 1000 Mbps connectivity through cascaded switches In addition the switches are also connecting several servers at 1 Gbps Figure 2 2 Network Aggregation Plan Servers 1 Gbps Full Duplex Workstations ...

Страница 29: ...ides a more secure and cleaner network environment VLANs can be based on untagged port groups or traffic can be explicitly tagged to identify the VLAN group to which it belongs Untagged VLANs can be used for small networks attached to a single switch However tagged VLANs should be used for larger networks and all the VLANs assigned to the inter switch links Server Farm Headquarters Warehouse Resea...

Страница 30: ...tween dissimilar network types you can attach these switches directly to a multi protocol router 3 As a general rule the length of fiber optic cable for a single switched link should not exceed 1000BASE SX 550 m 1805 ft for multimode fiber 1000BASE LX 10 km 3 1 miles for single mode fiber 1000BASE ZX 80 km 62 1 miles for single mode fiber However power budget constraints must also be considered wh...

Страница 31: ...smitters Make sure that the unit is connected to a separate grounded power outlet that provides 100 to 240 VAC 50 to 60 Hz is within 2 m 6 6 feet of each device and is powered from an independent circuit breaker As with any equipment using a filter or surge suppressor is recommended Ethernet Cabling To ensure proper operation when installing the switch in a network make sure that the current cable...

Страница 32: ...dhesive foot pads Bracket Mounting Kit containing two brackets and eight screws for attaching the brackets to the switch Power cord either US Continental Europe or UK Console cable RS 232 This Installation Guide Documentation CD SMC Warranty Registration Card Optional Rack Mounting Equipment If you plan to rack mount the switch be sure to have the following equipment available Four mounting screws...

Страница 33: ...erature is within the specified operating temperature range see page 1 Mechanical Loading Do not place any equipment on top of a rack mounted unit Circuit Overloading Be sure that the supply circuit to the rack assembly is not overloaded Grounding Rack mounted equipment should be properly grounded Particular attention should be given to supply connections other than direct connections to the mains...

Страница 34: ... switch only turn to Connecting to a Power Source at the end of this chapter 4 If installing multiple switches mount them in the rack one below the other in any order Desktop or Shelf Mounting 1 Attach the four adhesive feet to the bottom of the first switch Figure 3 4 Attaching the Adhesive Feet ...

Страница 35: ...g optional transceivers 1000BASE SX SMC1GSFP SX 1000BASE LX SMC1GSFP LX 1000BASE ZX SMC1GSFP ZX To install an SFP transceiver do the following 1 Consider network and cabling requirements to select an appropriate transceiver type Refer to Connectivity Rules on page 4 5 2 Insert the transceiver with the optical connector facing outward and the slot connector facing down Note that SFP transceivers ar...

Страница 36: ...ved for the socket type in your country 3 Check the front panel LEDs as the device is powered on to be sure the Power LED is on If not check that the power cable is correctly plugged in Connecting to the Console Port The DB 9 serial port on the switch s rear panel is used to connect to the switch for out of band console configuration The command line driven configuration program can be accessed fr...

Страница 37: ... Baud rate 9 600 bps Character Size 8 Characters Parity None Stop bit One Data bits 8 Flow control none Table 3 1 Serial Cable Wiring Switch s 9 Pin Serial Port Null Modem PC s 9 Pin DTE Port 2 RXD receive data 3 TXD transmit data 3 TXD transmit data 2 RXD receive data 5 SGND signal ground 5 SGND signal ground No other pins are used ...

Страница 38: ...Installing the Switch 3 8 3 ...

Страница 39: ... Power over Ethernet connections work with all existing Category 3 4 5 5e or 6 network cabling including patch cables and patch panels outlets and other connecting hardware without requiring modification The switch delivers power to a device using wire pairs in the connecting UTP or STP cable The switch can provide up to 15 4 W of power continuously on each port However taking into account some po...

Страница 40: ...e other end of the cable segment to a modular wall outlet that is connected to the wiring closet See Network Wiring Connections on page 4 2 Otherwise attach the other end to an available port on the switch 3 Make sure each twisted pair cable does not exceed 100 meters 328 ft in length 4 As each connection is made the Link LED on the switch corresponding to each port will light green 1000 Mbps or a...

Страница 41: ...cords on page 4 6 Figure 4 2 Wiring Closet Connections Fiber Optic SFP Devices An optional Gigabit SFP transceiver 1000BASE SX 1000BASE LX or 1000BASE ZX can be used for a backbone connection between switches or for connecting to a high speed server Each single mode fiber port requires 9 125 micron single mode fiber optic cable with an LC connector at both ends Each multimode fiber optic port requ...

Страница 42: ...ht niedriger ist als die für dieses Produkts Der Glasfasertransceiver muß auch ein überprüftes Gerät der Laser Klasse 1 sein 1 Remove and keep the LC port s rubber cover When not connected to a fiber cable the rubber cover should be replaced to protect the optics 2 Check that the fiber terminators are clean You can clean the cable plugs by wiping them gently with a clean tissue or cotton ball mois...

Страница 43: ... all four wire pairs are connected However it is recommended that for all critical connections or any new cable installations Category 5e enhanced Category 5 or Category 6 cable should be used The Category 5e specification includes test parameters that are only recommendations for Category 5 Therefore the first step in preparing existing Category 5 cabling for running 1000BASE T is a simple test o...

Страница 44: ... For each piece of equipment identify the devices to which it is connected Table 4 3 Maximum 1000BASE LX Fiber Optic Cable Length Fiber Diameter Fiber Bandwidth Cable Length Range Connector 9 125 micron single mode fiber N A 2 m 5 km 7 ft 3 2 miles LC Table 4 4 Maximum 1000BASE ZX Fiber Optic Cable Length Fiber Diameter Fiber Bandwidth Cable Length Range Connector 9 125 micron single mode fiber N ...

Страница 45: ...f understanding use a location based key when assigning prefixes to your cable labeling Use sequential numbers for cables that originate from the same equipment Differentiate between racks by naming accordingly Label each separate piece of equipment Display a copy of your equipment map including keys to all abbreviations at each equipment rack ...

Страница 46: ...Making Network Connections 4 8 4 ...

Страница 47: ... appear to be malfunctioning such as the power cord or network cabling test them in an alternate environment where you are sure that all the other components are functioning properly Table A 1 Troubleshooting Chart Symptom Action Power LED is Off Check connections between the switch the power cord and the wall outlet Contact your dealer for assistance Contact SMC Technical Support Power LED is Amb...

Страница 48: ...ink to the management agent check to see if you have a valid network connection Then verify that you entered the correct IP address Also be sure the port through which you are connecting to the switch has not been disabled If it has not been disabled then check the network cabling that runs between your remote location and the switch Caution The management agent can accept up to four simultaneous ...

Страница 49: ...umbered Be sure to hold the connectors in the same orientation when attaching the wires to the pins Figure B 1 RJ 45 Connector Pin Numbers 10BASE T 100BASE TX Pin Assignments Use unshielded twisted pair UTP or shielded twisted pair STP cable for RJ 45 connections 100 ohm Category 3 or better cable for 10 Mbps connections or 100 ohm Category 5 or better cable for 100 Mbps connections Also be sure t...

Страница 50: ... Signal Name 1 Receive Data plus RD and GND Positive Vport Transmit Data plus TD and 48V feeding power Negative Vport 2 Receive Data minus RD and and GND Positive Vport Transmit Data minus TD and 48V feeding power Negative Vport 3 Transmit Data plus TD and 48V feeding power Negative Vport Receive Data plus RD and GND Positive Vport 6 Transmit Data minus TD and 48V feeding power Negative Vport Rece...

Страница 51: ... hubs The table below shows the 1000BASE T MDI and MDI X port pinouts These ports require that all four pairs of wires be connected Note that for 1000BASE T operation all four pairs of wires are used for both transmit and receive Use 100 ohm Category 5 5e or 6 unshielded twisted pair UTP or shielded twisted pair STP cable for 1000BASE T connections Also be sure that the length of any twisted pair ...

Страница 52: ... cables 2 Reduce the number of connectors used in the link 3 Reconnect some of the connectors in the link Fiber Standards The current TIA Telecommunications Industry Association 568 A specification on optical fiber cabling consists of one recognized cable type for horizontal subsystems and two cable types for backbone subsystems Horizontal 62 5 125 micron multimode two fibers per outlet Backbone 6...

Страница 53: ...ohm UTP cable Category 5 or better 1000BASE T RJ 45 100 ohm UTP or STP cable Category 5 5e or 6 Maximum Cable Length 100 m 328 ft Buffer Architecture 768 Kbytes Aggregate Bandwidth 48 Gbps Switching Database 8K MAC address entries 1K static MAC addresses LEDs System Power Port Status link speed activity PoE Weight 4 33 kg 9 53 lbs Size 44 x 32 x 4 3 cm 17 3 x 12 6 x 1 7 in Temperature Operating 0 ...

Страница 54: ... Forwarding Mode Store and forward Throughput Wire speed Management Features In Band Management Web Telnet SSH or SNMP manager Out of Band Management RS 232 RJ 45 console port Software Loading TFTP in band or XModem out of band Standards IEEE 802 3 2005 Ethernet Fast Ethernet Gigabit Ethernet IEEE 802 1D Spanning Tree Protocol IEEE 802 1w Rapid Spanning Tree Protocol IEEE D802 1Q Virtual LAN ISO I...

Страница 55: ...missions FCC Class A Industry Canada Class A EN55022 CISPR 22 Class A EN 61000 3 2 3 VCCI Class A C Tick AS NZS 3548 1995 Class A Immunity EN 61000 4 2 3 4 5 6 8 11 Safety UL No 60950 1 UL 60905 1 CB IEC EN 60950 1 Warranty Limited Lifetime ...

Страница 56: ...Specifications C 4 C ...

Страница 57: ...sichtbar sein Sicherstellen dass das verdrehte Kabel stets weg von anderen Stromkabeln Neonleuchteinrihtungen und anderen Quellen von moglichen elektrischen Storungen verlegt wird wie z B von Radios und Transmittern Sicherstellen dass das Gerat an eine separate Stromquelle mit Erdanschlus mit einer Netzspannung von 100 bis 240 V AC Wechselstromspannung 50 bis 60 Hz und innerhalb in einem Abstand v...

Страница 58: ...it muss richtig geerdet werden Besondere Acht sollten Sie bei Verbindungen geben die nicht direkt zum Netz führen So montieren Sie Geräte an ein Rack 1 Befestigen Sie die Metallwinkel mit den im Metallwinkel Montageset erhältlichen Schrauben an dem Gerät 2 Befestigen Sie das Gerät mit vier Rackmontageschrauben nicht beigelegt an dem Rack 3 Wenn Sie nur einen Switch installieren dann springen Sie b...

Страница 59: ...2 24 port 10 100 1000 managed PoE switch SMC1GSFP SX 1 port 1000BASE SX Small Form Pluggable SFP mini GBIC transceiver SMC1GSFP LX 1 port 1000BASE LX Small Form Pluggable SFP mini GBIC transceiver SMC1GSFP ZX 1 port 1000BASE ZX Small Form Pluggable SFP mini GBIC transceiver Also available in models for Continental Europe and the UK ...

Страница 60: ...Ordering Information E 2 E ...

Страница 61: ...net over 100 ohm Category 5 or 5e twisted pair cable using all four wire pairs 1000BASE ZX Specification for long haul Gigabit Ethernet over two strands of 9 125 micron core fiber cable Auto Negotiation Signalling method allowing each node to select its optimum operational mode e g speed and duplex mode based on the capabilities of the node to which it is connected Bandwidth The difference between...

Страница 62: ... Fast Ethernet A 100 Mbps network communication system based on Ethernet and the CSMA CD access method Full Duplex Transmission method that allows two network devices to transmit and receive concurrently effectively doubling the bandwidth of that link Gigabit Ethernet A 1000 Mbps network communication system based on Ethernet and the CSMA CD access method IEEE Institute of Electrical and Electroni...

Страница 63: ...twisted pair or fiber cable joining a pair of repeaters or a repeater and a PC Local Area Network LAN A group of interconnected computers and support devices Management Information Base MIB An acronym for Management Information Base It is a set of database objects that contains information about the device Media Access Control MAC A portion of the networking protocol that governs access to the tra...

Страница 64: ...col suite that includes TCP as the primary transport protocol and IP as the network layer protocol UTP Unshielded twisted pair cable Virtual LAN VLAN A Virtual LAN is a collection of network nodes that share the same collision domain regardless of their physical location or connection point in the network A VLAN serves as a logical workgroup with no physical barriers allowing users to share inform...

Страница 65: ...ing fiber terminators 4 4 compliances EMC C 3 safety C 3 connectivity rules 10 Mbps 4 6 100 Mbps 4 6 1000 Mbps 4 5 console port pin assignments 3 6 console port pin assignments 3 6 contents of package 3 2 cooling problems A 1 cord sets international 3 6 D desktop mounting 3 4 device connections 4 1 E electrical interference avoiding 3 1 equipment checklist 3 2 Ethernet connectivity rules 4 5 4 6 F...

Страница 66: ...t 3 6 DB 9 3 6 ports connecting to 4 1 power connecting to 3 6 problems troubleshooting A 1 R rack mounting 3 3 RJ 45 port 1 2 connections 4 1 pinouts B 3 rubber foot pads attaching 3 4 S screws for rack mounting 3 2 site selelction 3 1 SNMP agent 1 2 specifications compliances C 2 C 3 environmental C 1 physical C 1 power C 2 standards compliance C 3 IEEE C 2 status LEDs 1 3 surge suppressor using...

Страница 67: ......

Страница 68: ...SMC8124PL2 ...

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