HP 958-000290-000 - Manual (Page 21)

edge switch 2/32 installation guide 1–7
Introduction
Figure 1–3: Edge Switch 2/32 (Rear View)
SFP Transceivers
A single-mode or multi-mode fiber-optic cable attaches to a port through a pluggable
small form factor (SFP) transceiver. The SFP provides a duplex LC interface, and can
be detached from the switch port for easy replacement. Two fiber-optic transceiver
types are available:
• Shortwave laser — Shortwave laser SFPs provide short-distance connections (2
to 500 meters) through 50-micron or 62.5-micron multi-mode fiber.
• Longwave laser — Longwave laser SFPs provide long-distance connections (up
to 10 kilometers) through 9-micron single-mode fiber.
Cooling Fans
Four fans (each a separate FRU) provide cooling for the switch power supplies and the
control processor (CTP) card, as well as redundancy for continued operation if a
single fan fails.
Each fan FRU can be replaced while the switch is operating.
Power Supplies
Redundant, load-sharing power supplies step down and rectify facility input power to
provide 3.3 volts direct current (VDC), 5 VDC, and 12 VDC to the CTP. The power
supplies also provide input filtering, overvoltage protection, and overcurrent
protection. Either power supply can be replaced while the switch is operational.
1 Cooling fan (4)
2 Power supply (2)
3 Power switches on power supplies
(2)
1 2 3 2 3