Web / SNMP MANAGEABLE
SGSW-2403
24-Port 10/100/1000Mbps stackable switch
A.1 Diagnosing Switch Indicators
The switch can be easily monitored through panel indicators to assist the network manager in identifying problems. This section describes common problems you may encounter and possible solutions. Symptom: Link indicator does not light up (green) after making a connection. Cause: Network interface (e.g., a network adapter card on the attached device), network cable, or switch port is defective.
Solution: |
Verify that the switch and attached device are powered on. Be sure the cable is plugged into both the switch and corresponding device. Verify that the proper cable type is used and its length does not exceed specified limits. Check the adapter on the attached device and cable connections for possible defects. Replace the defective adapter or cable if necessary. |
Symptom: |
Power indicator does not light up (green) after power on. Cause: Defective power outlet, power cord, or internal power supply. Solution: Check the power outlet by plugging in another device that is functioning properly. Check the power cord with another device. If these measures fail to resolve the problem, have the unitīs power supply replaced by a qualified PLANET distributor. |
A.2 Power and Cooling Problems
If the power indicator does not turn on when the power cord is plugged in, you may have a problem with the power outlet, power cord, or internal power supply as explained in the previous section. However, if the unit powers off after running for a while, check for loose power connections, power losses or surges at the power outlet, and verify that the fans on the right side of the unit are unobstructed and running prior to shutdown. If you still cannot isolate the problem, then the internal power supply may be defective. In this case, contact your PLANET distributor for assistance.
Verify that all system components have been properly installed. If one or more components appear to be malfunctioning (e.g., the power cord or network cabling), test them in an alternate environment where you are sure that all the other components are functioning properly.
A.3.1 Port and
Cable Assignments 
A.3.1.1 RJ-45 Port Description
RJ-45 station ports (MDI-X) can be attached to any devices which use a standard network interface (e.g., a workstation, server, bridge or router). RJ-45 daisy-chain ports (MDI) can be cascaded to a station port on similar networking devices (e.g., another switch or hub). Use unshielded twisted-pair (UTP) or shielded twisted-pair (STP) cable for RJ-45 connections: 100-ohm Category 3, 4 or 5 cable for 10 Mbps connections or 100-ohm Category 5 cable for 100 Mbps connections. Also be sure that the length of any twisted-pair connection does not exceed 100 meters (328 feet).
Pin |
Assignment (Station Ports) |
Assignment (Daisy-Chain Port) |
1 |
Input Receive Data + |
Output Transmit Data + |
2 |
Input Receive Data - |
Output Transmit Data - |
3 |
Output Transmit Data + |
Input Receive Data + |
6 |
Output Transmit Data - |
Input Receive Data |
4,5,7,8 |
Not Used |
Not Used |
Schematics for both straight and crossover twisted-pair cable are shown below.
A.3.2.1 FCC Class A Certification (USA)
Warning: This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause interference to radio communications. It has been tested and found to comply with the limits for a Class A digital device pursuant to Subpart B of Part 15 of FCC Rules, which are designed to provide reasonable protection against such interference when operated in a commercial environment. Operation of this equipment in a residential area is likely to cause interference, in which case the user, at his own expense, will be required to take whatever measures are required to correct the interference.
You may use unshielded twisted-pair (UTP) for RJ-45 connections - Category 3 or greater for 10Mbps connections, and Category 5 for 100Mbps connections. For fiber optic connections, you may use 50/125 or 62.5/125 micron fiber.
A.3.2.2 Canada Department of Communications - Class A
This digital apparatus does not exceed the Class A limits for radio noise emissions from digital apparatus as set out in the interference-causing equipment standard entitled "Digital Apparatus,"ICES-003 of the Department of Communications.
Cet appareil num rique respecte les limites de bruits radio lectriques applicables aux appareils num riques de Classe A prescrites dans la norme sur le mat riel brouilleur :"Appareils Num rques" NMB-003 dict e par le minist re des Communications.
A.3.2.4 VCCI Class A Compliance (Japan)
A.3.2.5 CE Mark Declaration of Conformance for EMI and Safety (EEC)
This is to certify that this product complies
with ISO/IEC Guide 22 and EN45014.
It conforms to the following specifications:
EMC |
EN55022(1988)/CISPR-22(1985) |
class A |
|
EN60555-2(1995) |
class A |
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EN60555-3 |
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EC1000-4-2(1995) |
4kV CD, 8kV AD |
|
IEC1000-4-3(1995) |
3V/m |
|
IEC1000-4-4(1995) |
1kV - (power line), 0.5kV - (signal line) |
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IEC1000-4-6(1995) |
3Vrms |
This product complies with the requirements of the Low Voltage Directive 73/23/EEC and the EMC Directive 89/336/EEC.
Warning! 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 systéme téléphonique!
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Copyright (c) 2001, Planet Technology Corp. |
