Figure. Example of electrical circuit for visual and audible alarms
NMC Card Installation
Slot number 1 of the chassis is reserved for the Network Management Controller (NMC). The NMC
card provides the full network management features. When the NMC is installed, the rack and all line
cards become manageable by industry standard SNMP protocol. (Please refer to Chapter 3 for more
information on the operation of the network management features). The remaining slots, numbered 2
through 8, may contain any other FRM220 Series In-band Managed fiber media converter card.
Figure. NMC removal/replacement in slot number 1
IMPORTANT: In the FRM220 In-Band Managed Rack, slot number1 must contain an NMC card. In a
chassis where non-managed line cards are employed (cards that use DIP switch settings), slot
number 1 may then be used for a non-managed media converter line card.
Line Card Installation
The Line Cards for the FRM220 Series are Fiber Media Converter Cards which slide into CH08
chassis, and interface with the back panel "main board". The back panel provides a connection to the
converter cards for power and serial control (via NMC).
The media converter cards are designed to be "hot" swappable, meaning CH08 chassis need not
be powered off before removing or replacing a card. Hot swapping will not affect the operation of other
converter cards.
Removal of a converter card is accomplished by loosening the one (1) captive screw (right) and
then pulling the card straight out of the chassis with the same screw. Replace the card by reversing the
procedure, align in the slot groove and gently seat the card, retightening the captive screw.
Figure. Line card removal/replacement
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