5
2.2.1 DB15 to BNC Conversion Cable (optional)
An optional 75 ohm coaxial conversion cable with female BNC connector is available
for connecting the McIAS to the telco E1 facility. At one end, the cable must be
attached to a DB15F (female) connector on the McIAS backplane and at the other end
to the Cross Connect Point (BNC) at the telco.
One of the McIAS female BNC connectors on the cable is labeled "McIAS Transmit
(1 & 9)"; the other is labeled "McIAS Receive (3 & 11)". Connection must be made
from the McIAS Transmit female connector to the Cross Connect Point BNC male
Receive connector. Connection must also be made from the McIAS Receive female
connector to the Cross Connect Point BNC male Transmit connector.
The table below lists the conversion cable pin connections.
DB15F
(McIAS backplane)
Conversion Cable
BNC (female)
Cross Connect Point
BNC (male)
Conductor
1
XMIT1
Telco Receive
center
9
XMIT2
Telco Receive
shield
3
RCV1
Telco Transmit
center
11
RCV2
Telco Transmit
shield
Table 2-3
DB15 to BNC Conversion Cable Pin Connections
Содержание McIAS 1610 Series
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