D/I MUX III User’s Manual
iii
PIN-OUT CONNECTIONS
COLOR NAME PIN MOLEX
RED Alarm 1 2 -------------------------------------------------------------Æ Ring Lug
ORANGE +5V 3 ----------------------------Æ 11
YELLOW Alarm 2 4 -------------------------------------------------------------Æ Ring Lug
BLUE Ringer 6 ----------------------------Æ 6
Failure Alarm:
The 30333-101 / 121 provides relay contact closure (1 ampere maximum) for an external alarm
upon ringing generator failure. For Power Supply and UCOM locations, the connection location
is at the “Minor Alarm” terminals on the back of the D/I Mux III shelf. For a Feature Card
location the alarm contacts appear on the associated card slot’s DB-25 connector on the rear
panel, at pins 18 and 20.
Providing Ringing Voltage to Other Equipment:
The ringing voltage from the generator is available at the back of the shelf (marked “20 Hz”) for
connection to other applications (including D/I Mux III shelves) that require superimposed
ringing voltage. Be sure to securely ground all equipment using common ringing voltage to the
common ground connection on the D/I Mux III shelf that houses the Ring Generator. Care
should be exercised to keep the total continuous ringing load at or below the specified 15 watt
capability.
Attention should also be paid to overall loading – if an internal AC/DC power supply is installed
in the shelf with the 30333-101 Ring Generator and the unit also powers additional shelves –
the AC/DC power supply has to power all –48 Volt requirements in the shelf (CSU and talk
battery for FXS and Smart Omni Orderwire, etc.) along with powering the Ring Generator. If in
doubt regarding an application with high internal AC powered loading, contact Coastcom
application engineering (800-433-3433).
Caution:
This unit must be installed in a properly grounded D/I Mux III shelf.
Hazardous voltages are present on the Modular Ring Generator printed circuit card traces. Do
not operate this card on a card extender while operating in the shelf.
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