Section 365–001–201
6
4.3
Trunk Processing During a Carrier Group Alarm (CGA)
Upon carrier failure, the CGAW bus goes to ground immediately; it then winks open for 70 milliseconds approxi-
mately 2.5 seconds later. The CGAW bus controls the TP relay which controls the status of the 1 (pin 2) and 2
(pin 6) lead pins. The TP relay operates when CGAW goes to ground and releases for for 70 milliseconds when
CGAW winks open; it then remains operated for the duration of trunk processing. When the TP relay operates, it
shorts the 1 and 2 leads together. The 2 lead can be tied to ground by setting screw option Y closed. When the
channel unit is removed from its mounting slot, the 1 lead is connected to ground through a shorting contact in the
backplane connector.
5.
MOUNTING
The 3650–01/03 mounts in one channel unit slot of a 360/363 D4 terminal. The hinged front panel serves as an
insert lever to ensure a positive connection of the channel unit’s card-edge connector to the backplane connector
when the unit is installed and as an eject lever when the module is taken out of service.
Never handle or carry the channel unit by using the front panel in its open (upward) position.
CAUTION
Install and remove the module with care. Do not force it into place. If excessive resistance is
encountered while installing the module, remove it and check the card guides and connector to
verify proper alignment and the absence of foreign material.
CAUTION
Use the following steps to mount the unit:
Step
Action
1.
Align the channel unit with the appropriate card-guided slot of the terminal.
2.
Slide the unit into the slot with the front panel in the horizontal (up)position.
3.
When the top portion of the hinged front panel is under the front lip of the terminal, push down on the
front panel until it is in the vertical position. The channel unit’s card-edge connector will begin to make
contact with the backplane connector.
4.
Continue to apply light pressure to the bottom edge of the front panel until the unit snaps into place.
6.
INSTALLER CONNECTIONS
6.1
Non-Connectorized Terminal
Installer connections are made to the 3650–01/03 channel unit by wire-wrapping to the T and R leads (pins 50
and 48), the make-busy leads 1 and 2 (pins 2 and 6) and, as required, the sealing current A and B (pins 8 and 7)
leads and/or the PN1 and PN2 (pins 46 and 41) leads of the associated 50-pin connectors on the backplane as-
sembly of a non-connectorized 360/363 D4 terminal.
6.2
Connectorized Terminal
On connectorized 360/363 D4 terminals, (360–10, –11, etc.) connections are made via 25-pair female connectors
(CINCH 222–22–50–023 or equivalent) to the appropriate 25-pair male connectors of the 360/363 D4 terminal.
Refer to section 360–000–200 for the wiring diagrams of the female connectors with respect to the 360/363 D4
terminal being used. Electrical connections are made when the unit is installed; PN1 and PN2 are not connecto-
rized.
