12
8
NM
ETH/OAM
Color
PIN
Pin of the CLK and TOD Interfaces on the CXPB Board
120-hm external clock
External time (1PPS + time
information)
External time (DCLS)
White/orange
1
Rx negative of external clock
Not defined
Not defined
Orange
2
Rx positive of external clock
White/green
3
Not defined
RS422 input/output negative of
1PPS signals
RS422 input/output negative of DCLS
time signals
Green
4
Tx negative of external clock
Grounding
Grounding
Blue
5
Tx positive of external clock
White/blue
6
Not defined
RS422 input/output positive of 1PPS
signals
RS422 input/output positive of DCLS time
signals
White/brown
7
RS422 input/output negative of time
information
Not defined
Brown
8
RS422 input/output positive of time
information
Installing the NM Cable
9
Installing the External Clock/Time Cable
a. Making the external clock and time cables according to the pin definition table
b. Installing the external clock and time cables
CLK
TOD
