5-16
October, 1998
GRF 400/1600 Getting Started - 1.4 Update 2
Cabling and Verifying Media Cards
FDDI/Q media cards
Attaching FDDI/Q media cables
Not only are fiber cables easier to damage than coax and other types of cables, but the damage
is harder to detect.
Excess cable lengths should be bound in a figure-eight pattern. Do not wind excess cable into
circular coils.
Keep cables off the floor
Cables left on the floor can get damaged. The resulting broken fiber might work temporarily,
but begin to cause problems when the cable is moved or bent the other way.
Keep the connectors clean
A broken cable or dirty connector can still deliver data, but with errors. Attaching a dirty
connector can soil the optical component on the media card.
Leave the dust caps on until you are ready to insert the cable ends.
!
Caution:
Although there may be no hazard with multimode fiber, it is not a wise practice to
look into the end of any fiber optic cable.
Vorsicht: Obwohl Multimodenfasern voraussichtlich keine Gefahr darstellen, empfiehlt es
sich, nicht in das Ende eines Glasfaserkabels hineinzuschauen.
OP0, OP1,
OP2, OP3
The amber / green OP LEDs indicate the type of ring connection made at
the particular interface:
When OP is off, no viable connection is enabled.
When OP is green, a SAS connection is configured.
When OP is amber, a DAS connection is configured.
TRX
These green LEDs blink when FDDI/Q traffic is active in either direction at
a particular interface (updated each 100 ms).
Table 5-6. FDDI/Q media card LEDs (continued)
LED
Description
