User manual

14
Canoga Perkins 2201 Rack Chassis/2200R Redundant Card
OTHER
2240 MODEMS
SW2-1 SIMPLEX OPEN OPEN
SW2-2 EXT CLK OPEN OPEN
SW2-3 SYNC CLOSED OPEN
SW2-4 SP1 OPEN OPEN
W2: INSTALLED INSTALLED
W3: INSTALLED INSTALLED
W8: INSTALLED INSTALLED
Table 2-B.
2200R
Redundant Card
Factory Settings
The primary modem should be connected to the J-1 ribbon cable, and the secondary
modem should be connected to the J-2 ribbon cable.
The ribbon cables are keyed to provide proper pin alignment. They will connect
properly with folds, and can be tucked between cards.
Connect the fiber optic cables from the local primary transmitter to the remote primary
receiver and from the remote primary transmitter to the local primary receiver. Do the
same for the secondary modem optics.
2.2.1 2200R Remote Control and Failure Alarm
The remote alarm connector (J5) provides both remote control switching and optical
link failure alarm contacts (see Figure 2-7). The automatic mode can be remotely
overridden between the primary and secondary link by utilizing these contacts.
Two jumpers are provided (W1 through W4) for configuring different alarm modes
(see Figure 2-8). W2 and W3 are factory installed for a normal alarm condition and
reflect either a fiber or modem failure. This jumper combination sets the alarm relay
into a normally open condition. It will close on alarm or power loss.
If a switchover occurs while in automatic mode, the alarm indicator on the modem
front panel will light. The jumper combination of W1 and W3 will configure the alarm
relay into a “normally closed” condition. A contact for a remote indication of this
condition is supplied at positions J5-1 and J5-2.