Peripheral Fim Carrier; Genera; Functions; Electrical Description - Mitel SX-200 Practices

18
' PERIPHERAL FIM CARRIER
General
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I 8.-l The Peripheral FIM Carrier (PFC) provides the interface between the Bay Control
Card and the Fiber Interface Module. It connects to the module position on the Bay
Control Card and acts as a carrier for the Fiber Interface Module. .
The Peripheral FIM Carrier measures 158 mm x 368 mm (6.2 in. x 14.5 in.).
Functions
18.2 The Peripheral FIM Carrier provides the following functions:
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RS-232 port connection with surge and over voltage protection for the Remote
Maintenance Terminal
. System Fail Transfer (SFT) contact closure and control circuitry
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Single ended to Balanced conversion (and vice-versa) of C244 and Frame Pulse.
0 Acts as the FIM carrier.
Electrical Description
18.3 The PFC provides a standard terminal interface via a nine pin D-sub connector
located at the top edge of the card (see Figure 18-I). Transorb diodes provides
protection circuitv for each of the RS-232 signals.
The PFC provides a four pin line connector to control an external System Fail Transfer
unit. Under normal conditions the SFT contact is open. When a failure occurs, the SFT
contact closes and signals the external SFT equipment to initiate a transfer. There are
two major reasons why a transfer may occur: Loss of SANITY signal and Peripheral
Power failure.
The FIM provides Single ended signals which the PFC converts to the Balanced signals
expected by the Bay Controller. The PFC also converts the three Balanced DX links
from the Bay Controller to the Single ended signals expected by the FlMs.
The PFC connects to the Bay Control Card via two 96 (3X32) pin connectors, and the
FIM connects to the PFC via a 64 (2X32) pin connector. (See Figure 18-I)
9109-096-125-NA Issue1 Revision 0 125 18-l