Dlp- D325 Install Timing Cables On The Mic-C/T/P - Cisco ONS 15454 SDH Procedure Manual

Chapter 20 DLPs D300 to D399
DLP-D325 Install Timing Cables on the MIC-C/T/P
Purpose
Tools/Equipment
Prerequisite Procedures
Required/As Needed
Onsite/Remote
Security Level
Using coaxial cable with 1.0/2.3 miniature coax connectors, connect the clock cable to the appropriate
Step 1
connector on the faceplate of the MIC-C/T/P FMEC.
Step 2 Gently push the cable with the 1.0/2.3 miniature coax connector down until the cable connector slides
into the 1.0/2.3 miniature coax connector on the faceplate with a click.
The MIC-C/T/P provides 1.0/2.3 miniature coax connectors that are used for timing input and output.
The top connectors are for "A" (BITS-1) timing, and the bottom connectors are for "B" (BITS-2) timing.
In each case, the left connector is the input and the right connector is the output. The input connectors
for timing provide a 75-ohm termination. System cables are available that can convert timing clocks
from 75 ohms to 100/120 ohms.
Table 20-2
Pin
IN 1
OUT 1
IN 2
OUT 2
A high-impedance option (> 3 kilo-ohms or greater) is possible through a jumper on the MIC-C/T/P
FMEC. You can change the top timing input to high impedance by removing the jumper on P3 on the
MIC-C/T/P FMEC. You can change the bottom timing input to high impedance by removing the jumper
on P2 of the MIC-C/T/P FMEC.
Note
Connect the other end of the cable to the external source of the timing signal according to
Step 3
Step 4 Repeat
Step 5 Return to your originating procedure (NTP).
78-17194-01
This task installs the timing cables on the MIC-C/T/P FMEC.
75-ohm coaxial cable with a 1.0/2.3 miniature coax connector on the
MIC-C/T/P side
NTP-D220 Install the Power and Signal FMECs, page 1-7
As needed
Onsite
None
Table 20-2
MIC-C/T/P Clock Connector Pin Assignment
Function
Input from external device
Output to external device
Input from external device
Output to external device
Refer to ITU-T G.813 for rules about provisioning timing references.
Step 3 for each cable that is required.

DLP- D325 Install Timing Cables on the MIC-C/T/P

shows MIC-C/T/P pin assignments.
Cisco ONS 15454 SDH Procedure Guide, R7.0
Table 20-2.
20-15