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How to configure External clock source of OSN7500 with 5581C 120ohm oscillo-quad

Publication Date:  2012-07-25 Views:  41 Downloads:  0
Issue Description
Customer wanted to connect external clock source on OSN7500 from 5581C 120ohm oscillo-quad. After connectivity with oscillo-quad external clock source NE was not updating external clock source in Configuration>>Clock View.
Alarm Information
EXT_SYNC_LOS
Parameters(hex): 0x01 0x00 0x01 0xff 0xff
Handling Process
After soldering wires properly on DB9 and puntching wires on RJ-45 according to attached figures, connect RJ-45 with CLK2 port of EOW board and DB-9 with oscillo-quad. Problem was resolved and external clock quality is extracting now according to standard G.811. 
OSN7500-RJ45 (1st pin)>>>>oscillo-quad-DB9(1st pin)
OSN7500-RJ45 (2nd pin)>>>>oscillo-quad-DB9(2nd pin)
OSN7500-RJ45 (3rd pin)>>>>oscillo-quad-DB9(4th pin)
OSN7500-RJ45 (4th pin)>>>>oscillo-quad-DB9(3rd pin)
Root Cause
Error was found in configuration of pins. Improper connectivity of RJ45-pins on OSN7500 and DB9-connector on oscillo-quad caused this problem. Pin configuratin mismatch occured
Suggestions
Connectivity should be performed according to attached figures.

END