Continental Access SUPERTERM CIC1800, Installation And Service Manual, Page: 62 / 92

EXPANSION BOARD CONNECTIONS
Superterm CIC1800 / CICP1400UL 62
DI/DO Board Connection
DI/DO boards mount to any one of the three
Expansion I/O board slots located on the side panel
of the Superterm cabinet. The DI/DO board is
secured to the Superterm cabinet with three 6-32
screws (see Figure 41). The DI/DO board receives
addition mounting support from three snap
standoffs affixed to the Superterm cabinet.
DI/DO Board Power Connection
Normal operation of the DI/DO board can require
continuous activation of all 16 relays on the board,
thus the DI/DO board requires 500mA at 12VDC
for proper operation (see CONFIGURATION,
page 10). Power for the DI/DO board is supplied
from the Auxiliary Power terminal strip located on
the Superterm main circuit board (see Figure 42).
NOTE: Route all cables between the Expansion
1/O boards and the Superterm circuit board through
the wire guides provided on the Superterm cabinet.
The Auxiliary Power terminal strip provides three
sets of +12VDC connections for use with DI/DO
boards.
Table 43 lists the connections between the DI/DO
board and the Auxiliary Power terminal strip.
Table 43 - DI/DO Board Connection Table
DI/DO Board Function Auxiliary
Power
Connector -
Pin #
Terminal Strip
Pin #
J2 - 1 +12VDC 1, 3, or 5
J2 - 2 GND 2, 4, or 6
DI/DO Board Power Cable Requirements
The DI/DO board requires 18AWG stranded wire
between the Input Power terminal strip (labeled J2)
and the Auxiliary Power terminal strip on the
Superterm main circuit board.
Data/Control Line Ribbon Cable
Connections
The DI/DO board communicates with the
Superterm through a 34-pin ribbon cable. The
DI/DO board contains two identical 34-pin
connectors (labeled J 18 and J 19).
The 34-pin connector labeled J19 is used for daisy-
chaining other Expansion I/O boards to the DI/DO
board (see Figure 41).
The 34-pin connector labeled J18 is used for
connecting the DI/DO board to other Expansion
1/O boards (through daisy-chaining) or for
connecting to the main circuit board of the
Superterm.
NOTE: Pin 1 on the ribbon cable is indicated by a
red wire and a notch (arrow) on the connector
header. The ribbon cables must be installed with
proper Pin 1 alignment.
All Expansion 1/0 boards mounted on the
Superterm cabinet are joined with either 5-inch
ribbon cables or 18-inch ribbon cables.
The 5-inch ribbon cables are used for inter-
connecting (daisy-chaining) the Expansion 1/O
boards mounted on the cabinet wall.
The 18-inch ribbon cable is used to connect the
innermost Expansion I/O board to the Superterm
main circuit board at the Data/Control Line Input
Terminal Strip.