3-22 Issue 9 October 1998
363-206-204
Equipment and Front Access Cable Installation
Procedure for Shelves Connected to a Timing
Source/Timing a BITS Clock
The DS1 timing procedures front access and rear access are performed in the
same manner with the exception that connection is made to J237 of the front
access DS1 timing cable previously installed, instead of J37 on the backplane.
Refer to "DS1 Timing Cable Installation - Rear Access" in the "Equipment and
Rear Access Installation" section. The cables should be routed out of the bay,
stacking cables as shown in Figure 3-2.
Procedure for Other Shelves
Perform this procedure when shelf 1 in the same bay is to be directly connected to
the DS1 reference clock. The cable added in this procedure is to mult DS1 timing
in a bay to shelf 1. In this procedure, shelf 1 will be connected to shelf 2; shelf 2
will be connected to shelf 3; etc.
For DS1 timing to be delivered to a shelf other than shelf 1, DS1 timing cable
mults from that shelf to shelf 1 must be in place. Do not skip any shelves.
1. Connect the DS1 timing cable (G414, J237) of each shelf to the DS1 timing
cable (G415, P237) of each "lower" shelf.
2. Repeat procedure for each additional shelf in the bay.
3. Dress and secure all cables in the bay.
Modem Cable Installation - Front
Access
Description
The use of a modem will allow the DDM-2000 OC-3 to be accessed remotely.
NOTE
:
Connection to the modem port does not require the use of a null modem.
The modem cable installation procedures for shelf 1 front access and rear access
are performed in the same manner with the exception that connection is made to
J252 of the front access Modem cable previously installed, instead of J52 on the
backplane. Refer to the "Modem Cable Installation - Rear Access" in the
"Equipment and Rear Access Installation" section. The cables should be routed
out of the bay, stacking cables as shown in Figure 3-2.
The modem cable installation procedure for other shelves (other than shelf 1)
should be performed following the instructions in the "TBOS Telemetry Cable
Installation - Front Access" (if it has not already been performed).
Summary of Contents for DDM-2000 OC-3
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