Specifications

ASM-MN-214 Card Cage 6-1
Chapter 6
FOM-40/R Card
This chapter describes the FOM-40/R card, designed for installation in the
ASM-MN-214 card cage. The chapter contains the following sections:
• The ASM-MN-214 card cage
• ASM-MN-214 power supply
• FOM-40/R front panel
• Installing the FOM-40/R card.
6.1 ASM-MN-214 Card Cage
The ASM-MN-214 card cage contains one or two power supplies and up to
14 plug-in cards. The card types can be FOM-40/R or other RAD rack version
modems or converters – any combination of up to 14 plug-in cards.
For each of the 14 cards, the rear panel (see Figure 6-1) contains a male connector
for the terminal block and a DB-25 connector. A protection cover protects the
terminal block connectors.
Line Connector
The terminal block (see Figure 6-1) is attached to the rear panel terminal block
connectors. It contains screws for connecting the transmit and receive pairs and
ground, if present.
The ASM-MN-214 card cage is also available with BNC coaxial unbalanced line
connectors.
FOM-40/R fiber optic connectors are located on the front panel of the modem card.
DB-25 DTE Connector
The 25-pin D-type female interface connector provides all interface signals for the
digital interfaces. Modems having X.21 or V.35 interfaces require an external
mechanical adapter. Two optional interface attachments, CIA/X21/1 and
CIA/V.35/1, can be ordered separately from RAD. CIA/X.21/1 converts one DB-25
connector to an X.21 15-pin connector. CIA/V.35/1 converts one DB-25
connector to a V.35 34-pin connector.
V.36 modem cards are supplied with a RAD adapter cable CBL-530/449F, which
converts between the DB-25 connector and a V.36 37-pin connector.
FOM-40/R with one of the Ethernet interfaces (IR-ETH or IR-ETH/QV) uses a
CIA/ETH interface adapter, which converts one DB-25 connector to an RJ-45
connector.
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