Tyco Electronics 0-1591093-X ユーザーズマニュアル

  

 Page 25 

 
 

1.  Verify that the AC power is present and that the external fusing is 

correct and compliant with national requirements. The green 
Power LED should be lit to indicate that the switch is powered.  

1.  Ensure that the Ethernet partner device (switch, router, NIC etc) 

connected to the RJ-45 port of the switch is set for 
auto-negotiation. If this Ethernet partner device does not support 
auto-negotiation, then the switch can be programmed to apply 
the required speed and duplex modes to match the legacy 
partner equipment.  

2. If the switch and the partner device cannot auto-negotiate then 

the units automatically revert to the lower level of half-duplex 
operation. This issue is common to all auto-negotiating Ethernet 
devices and symptoms of incorrect negotiation include data 
errors and fragmented packets. 

3. Auto-negotiation can take up to 30 seconds to complete, 

depending on the partner device. 

4. Ensure that the switch is not overheating due to obstructed 

airflow around the side vents. 

1. Select the proper fibre cable for your network. The multi-mode 

module must use multi-mode fibre cable and the single-mode 
module must use single-mode fibre cable. See page 5 for the 
supported cable types and installation settings. 

2.  Ensure that the optical loss budget of the fibre uplink is within the 

limits specified on page27. Note that optical patch cables and 
other joints and splices can introduce additional optical losses 
that reduce the working distance of the fibre link.   

 
 Product Number 0-1591093-x 0-1591047-x                                                                                 Issue 1 

© Tyco Electronics 2005