FW 07.00.00/HAFM SW 08.06.00 McDATA Sphereon 4500 Fabric Switch Installation and Service Manual (620-000159-320, April 2005)

1
General Information
1-5
General Information
• Longwave laser (2.125 Gbps) - Longwave laser transceivers
provide connections for transferring 2.125 Gbps data up to 10
kilometers through 9-micron singlemode fiber.
• Extended longwave laser (2.125 Gbps) - Two types of extended
longwave laser transceivers provide connections for transferring
2.125 Gbps data up to 20 kilometers or 35 kilometers through
9-micron singlemode fiber.
Power Supply
Assembly
The switch contains two power supply assemblies with internal
cooling fans. The redundant, load-sharing power supply assemblies
step down and rectify facility input power to provide 3.3 volts direct
current (VDC), 5 VDC, and 12 VDC to the control processor (CTP)
card. The power supplies also provide input filtering, overvoltage
protection, and overcurrent protection.
Either power supply can be replaced while the switch is operational.
Each power supply has a separate connection to the CTP card to
allow for independent AC power sources. The power supplies are
input rated at 100 to 240 volts alternating current (VAC).
Three cooling fans integrated in each power supply assembly (six
fans total) provide cooling for the power supplies and CTP card, as
well as redundancy for continued operation if a single fan fails. Fans
are removed and replaced as part of the integrated power supply.
Controls, Connectors, and Indicators
Controls, connectors, and indicators for the switch include the:
• Combined initial machine load and reset (IML/RESET) button.
• Ethernet LAN connector.
• Green power (PWR) and amber system error (ERR) light-emitting
diodes (LEDs).
• Green, blue, and amber status LEDs associated with FRUs.
• RS-232 maintenance port.