GEN7iB
414
TROUBLE-SHOOTING
TROUBLE-SHOOTING
D
D.10 The Master/Sync connection does not synchronize
If this happens, check the following:
● Check whether the Master/Sync mode setting for each mainframe matches the
role of that mainframe. There should be one (and only one) Master and one or
more Sync mainframe(s).
● Check the optical Master/Sync cables. Both LEDs at the connector should be lit.
● Verify the cable type. The Master/Sync cables should be Multi Mode, 850 nm
optical cables.
● Very long cables and optical couplers in the cable degrade the optical signal.
For information on how to calculate optical losses, please refer to the chapter
„Calculatingmaximumbercablelength“onpage492.
● The optical connections should not be damaged and should be free of dust and
lint.
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